app/django/forms/models.py
author Sverre Rabbelier <srabbelier@gmail.com>
Tue, 02 Dec 2008 20:10:23 +0000
changeset 649 95a41542e693
parent 323 ff1a9aa48cfd
permissions -rw-r--r--
Finish Program Added some fields, and made TinyMCE the editor for the description field. Also updated the public page to show these new fields. We really need generic public views... Patch by: Sverre Rabbelier
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"""
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Helper functions for creating Form classes from Django models
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and database field objects.
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"""
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from django.utils.encoding import smart_unicode
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from django.utils.datastructures import SortedDict
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from django.utils.text import get_text_list, capfirst
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from django.utils.translation import ugettext_lazy as _
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from util import ValidationError, ErrorList
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from forms import BaseForm, get_declared_fields
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from fields import Field, ChoiceField, IntegerField, EMPTY_VALUES
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from widgets import Select, SelectMultiple, HiddenInput, MultipleHiddenInput
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from widgets import media_property
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from formsets import BaseFormSet, formset_factory, DELETION_FIELD_NAME
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try:
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    set
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except NameError:
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    from sets import Set as set     # Python 2.3 fallback
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__all__ = (
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    'ModelForm', 'BaseModelForm', 'model_to_dict', 'fields_for_model',
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    'save_instance', 'form_for_fields', 'ModelChoiceField',
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    'ModelMultipleChoiceField',
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)
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def save_instance(form, instance, fields=None, fail_message='saved',
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                  commit=True, exclude=None):
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    """
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    Saves bound Form ``form``'s cleaned_data into model instance ``instance``.
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    If commit=True, then the changes to ``instance`` will be saved to the
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    database. Returns ``instance``.
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    """
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    from django.db import models
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    opts = instance._meta
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    if form.errors:
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        raise ValueError("The %s could not be %s because the data didn't"
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                         " validate." % (opts.object_name, fail_message))
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    cleaned_data = form.cleaned_data
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    for f in opts.fields:
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        if not f.editable or isinstance(f, models.AutoField) \
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                or not f.name in cleaned_data:
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            continue
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        if fields and f.name not in fields:
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            continue
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        if exclude and f.name in exclude:
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            continue
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        f.save_form_data(instance, cleaned_data[f.name])
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    # Wrap up the saving of m2m data as a function.
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    def save_m2m():
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        opts = instance._meta
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        cleaned_data = form.cleaned_data
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        for f in opts.many_to_many:
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            if fields and f.name not in fields:
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                continue
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            if f.name in cleaned_data:
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                f.save_form_data(instance, cleaned_data[f.name])
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    if commit:
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        # If we are committing, save the instance and the m2m data immediately.
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        instance.save()
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        save_m2m()
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    else:
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        # We're not committing. Add a method to the form to allow deferred
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        # saving of m2m data.
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        form.save_m2m = save_m2m
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    return instance
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def make_model_save(model, fields, fail_message):
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    """Returns the save() method for a Form."""
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    def save(self, commit=True):
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        return save_instance(self, model(), fields, fail_message, commit)
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    return save
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def make_instance_save(instance, fields, fail_message):
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    """Returns the save() method for a Form."""
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    def save(self, commit=True):
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        return save_instance(self, instance, fields, fail_message, commit)
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    return save
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def form_for_fields(field_list):
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    """
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    Returns a Form class for the given list of Django database field instances.
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    """
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    fields = SortedDict([(f.name, f.formfield())
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                         for f in field_list if f.editable])
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    return type('FormForFields', (BaseForm,), {'base_fields': fields})
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# ModelForms #################################################################
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def model_to_dict(instance, fields=None, exclude=None):
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    """
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    Returns a dict containing the data in ``instance`` suitable for passing as
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    a Form's ``initial`` keyword argument.
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    ``fields`` is an optional list of field names. If provided, only the named
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    fields will be included in the returned dict.
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    ``exclude`` is an optional list of field names. If provided, the named
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    fields will be excluded from the returned dict, even if they are listed in
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    the ``fields`` argument.
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    """
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    # avoid a circular import
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    from django.db.models.fields.related import ManyToManyField, OneToOneField
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    opts = instance._meta
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    data = {}
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    for f in opts.fields + opts.many_to_many:
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        if not f.editable:
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            continue
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        if fields and not f.name in fields:
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            continue
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        if exclude and f.name in exclude:
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            continue
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        if isinstance(f, ManyToManyField):
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            # If the object doesn't have a primry key yet, just use an empty
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            # list for its m2m fields. Calling f.value_from_object will raise
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            # an exception.
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            if instance.pk is None:
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                data[f.name] = []
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            else:
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                # MultipleChoiceWidget needs a list of pks, not object instances.
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                data[f.name] = [obj.pk for obj in f.value_from_object(instance)]
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        else:
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            data[f.name] = f.value_from_object(instance)
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    return data
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def fields_for_model(model, fields=None, exclude=None, formfield_callback=lambda f: f.formfield()):
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    """
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    Returns a ``SortedDict`` containing form fields for the given model.
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    ``fields`` is an optional list of field names. If provided, only the named
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    fields will be included in the returned fields.
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    ``exclude`` is an optional list of field names. If provided, the named
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    fields will be excluded from the returned fields, even if they are listed
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    in the ``fields`` argument.
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    """
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    # TODO: if fields is provided, it would be nice to return fields in that order
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    field_list = []
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    opts = model._meta
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    for f in opts.fields + opts.many_to_many:
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        if not f.editable:
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            continue
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        if fields and not f.name in fields:
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            continue
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        if exclude and f.name in exclude:
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            continue
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        formfield = formfield_callback(f)
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        if formfield:
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            field_list.append((f.name, formfield))
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    return SortedDict(field_list)
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class ModelFormOptions(object):
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    def __init__(self, options=None):
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        self.model = getattr(options, 'model', None)
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        self.fields = getattr(options, 'fields', None)
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        self.exclude = getattr(options, 'exclude', None)
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class ModelFormMetaclass(type):
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    def __new__(cls, name, bases, attrs):
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        formfield_callback = attrs.pop('formfield_callback',
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                lambda f: f.formfield())
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        try:
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            parents = [b for b in bases if issubclass(b, ModelForm)]
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        except NameError:
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            # We are defining ModelForm itself.
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            parents = None
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        declared_fields = get_declared_fields(bases, attrs, False)
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        new_class = super(ModelFormMetaclass, cls).__new__(cls, name, bases,
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                attrs)
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        if not parents:
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            return new_class
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        if 'media' not in attrs:
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            new_class.media = media_property(new_class)
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        opts = new_class._meta = ModelFormOptions(getattr(new_class, 'Meta', None))
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        if opts.model:
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            # If a model is defined, extract form fields from it.
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            fields = fields_for_model(opts.model, opts.fields,
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                                      opts.exclude, formfield_callback)
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            # Override default model fields with any custom declared ones
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            # (plus, include all the other declared fields).
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            fields.update(declared_fields)
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        else:
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            fields = declared_fields
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        new_class.declared_fields = declared_fields
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        new_class.base_fields = fields
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        return new_class
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class BaseModelForm(BaseForm):
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    def __init__(self, data=None, files=None, auto_id='id_%s', prefix=None,
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                 initial=None, error_class=ErrorList, label_suffix=':',
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                 empty_permitted=False, instance=None):
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        opts = self._meta
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        if instance is None:
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            # if we didn't get an instance, instantiate a new one
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            self.instance = opts.model()
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            object_data = {}
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        else:
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            self.instance = instance
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            object_data = model_to_dict(instance, opts.fields, opts.exclude)
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        # if initial was provided, it should override the values from instance
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        if initial is not None:
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            object_data.update(initial)
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        super(BaseModelForm, self).__init__(data, files, auto_id, prefix, object_data,
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   211
                                            error_class, label_suffix, empty_permitted)
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    def clean(self):
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   213
        self.validate_unique()
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   214
        return self.cleaned_data
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    def validate_unique(self):
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        from django.db.models.fields import FieldDoesNotExist
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        # Gather a list of checks to perform. Since this is a ModelForm, some
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        # fields may have been excluded; we can't perform a unique check on a
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   221
        # form that is missing fields involved in that check.
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   222
        unique_checks = []
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diff changeset
   223
        for check in self.instance._meta.unique_together[:]:
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   224
            fields_on_form = [field for field in check if field in self.fields]
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   225
            if len(fields_on_form) == len(check):
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   226
                unique_checks.append(check)
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        form_errors = []
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   229
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   230
        # Gather a list of checks for fields declared as unique and add them to
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diff changeset
   231
        # the list of checks. Again, skip fields not on the form.
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   232
        for name, field in self.fields.items():
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   233
            try:
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   234
                f = self.instance._meta.get_field_by_name(name)[0]
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   235
            except FieldDoesNotExist:
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   236
                # This is an extra field that's not on the ModelForm, ignore it
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                continue
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   238
            # MySQL can't handle ... WHERE pk IS NULL, so make sure we
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   239
            # don't generate queries of that form.
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            is_null_pk = f.primary_key and self.cleaned_data[name] is None
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            if name in self.cleaned_data and f.unique and not is_null_pk:
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                unique_checks.append((name,))
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        # Don't run unique checks on fields that already have an error.
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        unique_checks = [check for check in unique_checks if not [x in self._errors for x in check if x in self._errors]]
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        bad_fields = set()
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        for unique_check in unique_checks:
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            # Try to look up an existing object with the same values as this
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            # object's values for all the unique field.
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            lookup_kwargs = {}
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            for field_name in unique_check:
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                lookup_kwargs[field_name] = self.cleaned_data[field_name]
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            qs = self.instance.__class__._default_manager.filter(**lookup_kwargs)
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            # Exclude the current object from the query if we are editing an
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            # instance (as opposed to creating a new one)
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            if self.instance.pk is not None:
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                qs = qs.exclude(pk=self.instance.pk)
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            # This cute trick with extra/values is the most efficient way to
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            # tell if a particular query returns any results.
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            if qs.extra(select={'a': 1}).values('a').order_by():
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                model_name = capfirst(self.instance._meta.verbose_name)
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                # A unique field
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                if len(unique_check) == 1:
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                    field_name = unique_check[0]
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                    field_label = self.fields[field_name].label
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                    # Insert the error into the error dict, very sneaky
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                    self._errors[field_name] = ErrorList([
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                        _(u"%(model_name)s with this %(field_label)s already exists.") % \
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                        {'model_name': unicode(model_name),
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                         'field_label': unicode(field_label)}
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                    ])
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                # unique_together
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                else:
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                    field_labels = [self.fields[field_name].label for field_name in unique_check]
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                    field_labels = get_text_list(field_labels, _('and'))
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                    form_errors.append(
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                        _(u"%(model_name)s with this %(field_label)s already exists.") % \
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                        {'model_name': unicode(model_name),
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                         'field_label': unicode(field_labels)}
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                    )
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                # Mark these fields as needing to be removed from cleaned data
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                # later.
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                for field_name in unique_check:
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                    bad_fields.add(field_name)
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        for field_name in bad_fields:
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            del self.cleaned_data[field_name]
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        if form_errors:
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            # Raise the unique together errors since they are considered
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            # form-wide.
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            raise ValidationError(form_errors)
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    def save(self, commit=True):
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        """
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        Saves this ``form``'s cleaned_data into model instance
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        ``self.instance``.
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        If commit=True, then the changes to ``instance`` will be saved to the
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        database. Returns ``instance``.
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        """
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        if self.instance.pk is None:
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            fail_message = 'created'
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        else:
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            fail_message = 'changed'
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        return save_instance(self, self.instance, self._meta.fields, fail_message, commit)
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class ModelForm(BaseModelForm):
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    __metaclass__ = ModelFormMetaclass
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def modelform_factory(model, form=ModelForm, fields=None, exclude=None,
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                       formfield_callback=lambda f: f.formfield()):
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    # HACK: we should be able to construct a ModelForm without creating
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    # and passing in a temporary inner class
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    class Meta:
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        pass
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    setattr(Meta, 'model', model)
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    setattr(Meta, 'fields', fields)
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    setattr(Meta, 'exclude', exclude)
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    class_name = model.__name__ + 'Form'
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    return ModelFormMetaclass(class_name, (form,), {'Meta': Meta,
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                              'formfield_callback': formfield_callback})
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# ModelFormSets ##############################################################
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class BaseModelFormSet(BaseFormSet):
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    """
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    A ``FormSet`` for editing a queryset and/or adding new objects to it.
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    """
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    model = None
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    def __init__(self, data=None, files=None, auto_id='id_%s', prefix=None,
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                 queryset=None, **kwargs):
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        self.queryset = queryset
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        defaults = {'data': data, 'files': files, 'auto_id': auto_id, 'prefix': prefix}
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        defaults['initial'] = [model_to_dict(obj) for obj in self.get_queryset()]
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        defaults.update(kwargs)
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        super(BaseModelFormSet, self).__init__(**defaults)
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    def _construct_form(self, i, **kwargs):
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        if i < self._initial_form_count:
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            kwargs['instance'] = self.get_queryset()[i]
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        return super(BaseModelFormSet, self)._construct_form(i, **kwargs)
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    def get_queryset(self):
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        if not hasattr(self, '_queryset'):
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            if self.queryset is not None:
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                qs = self.queryset
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            else:
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                qs = self.model._default_manager.get_query_set()
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            if self.max_num > 0:
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                self._queryset = qs[:self.max_num]
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            else:
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parents:
diff changeset
   361
                self._queryset = qs
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
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parents:
diff changeset
   362
        return self._queryset
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
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parents:
diff changeset
   363
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   364
    def save_new(self, form, commit=True):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   365
        """Saves and returns a new model instance for the given form."""
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   366
        return save_instance(form, self.model(), exclude=[self._pk_field.name], commit=commit)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   367
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
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parents:
diff changeset
   368
    def save_existing(self, form, instance, commit=True):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
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parents:
diff changeset
   369
        """Saves and returns an existing model instance for the given form."""
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
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parents:
diff changeset
   370
        return save_instance(form, instance, exclude=[self._pk_field.name], commit=commit)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
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parents:
diff changeset
   371
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   372
    def save(self, commit=True):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
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parents:
diff changeset
   373
        """Saves model instances for every form, adding and changing instances
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
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parents:
diff changeset
   374
        as necessary, and returns the list of instances.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
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parents:
diff changeset
   375
        """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   376
        if not commit:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   377
            self.saved_forms = []
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   378
            def save_m2m():
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   379
                for form in self.saved_forms:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   380
                    form.save_m2m()
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   381
            self.save_m2m = save_m2m
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   382
        return self.save_existing_objects(commit) + self.save_new_objects(commit)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   383
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   384
    def save_existing_objects(self, commit=True):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   385
        self.changed_objects = []
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   386
        self.deleted_objects = []
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   387
        if not self.get_queryset():
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   388
            return []
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   389
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   390
        # Put the objects from self.get_queryset into a dict so they are easy to lookup by pk
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   391
        existing_objects = {}
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   392
        for obj in self.get_queryset():
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   393
            existing_objects[obj.pk] = obj
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   394
        saved_instances = []
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   395
        for form in self.initial_forms:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   396
            obj = existing_objects[form.cleaned_data[self._pk_field.name]]
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   397
            if self.can_delete and form.cleaned_data[DELETION_FIELD_NAME]:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   398
                self.deleted_objects.append(obj)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   399
                obj.delete()
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   400
            else:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   401
                if form.changed_data:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   402
                    self.changed_objects.append((obj, form.changed_data))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   403
                    saved_instances.append(self.save_existing(form, obj, commit=commit))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   404
                    if not commit:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   405
                        self.saved_forms.append(form)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   406
        return saved_instances
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   407
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   408
    def save_new_objects(self, commit=True):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   409
        self.new_objects = []
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   410
        for form in self.extra_forms:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   411
            if not form.has_changed():
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   412
                continue
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   413
            # If someone has marked an add form for deletion, don't save the
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   414
            # object.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   415
            if self.can_delete and form.cleaned_data[DELETION_FIELD_NAME]:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   416
                continue
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   417
            self.new_objects.append(self.save_new(form, commit=commit))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   418
            if not commit:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   419
                self.saved_forms.append(form)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   420
        return self.new_objects
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   421
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   422
    def add_fields(self, form, index):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   423
        """Add a hidden field for the object's primary key."""
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   424
        from django.db.models import AutoField
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   425
        self._pk_field = pk = self.model._meta.pk
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   426
        if pk.auto_created or isinstance(pk, AutoField):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   427
            form.fields[self._pk_field.name] = IntegerField(required=False, widget=HiddenInput)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   428
        super(BaseModelFormSet, self).add_fields(form, index)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   429
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   430
def modelformset_factory(model, form=ModelForm, formfield_callback=lambda f: f.formfield(),
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   431
                         formset=BaseModelFormSet,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   432
                         extra=1, can_delete=False, can_order=False,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   433
                         max_num=0, fields=None, exclude=None):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   434
    """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   435
    Returns a FormSet class for the given Django model class.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   436
    """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   437
    form = modelform_factory(model, form=form, fields=fields, exclude=exclude,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   438
                             formfield_callback=formfield_callback)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   439
    FormSet = formset_factory(form, formset, extra=extra, max_num=max_num,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   440
                              can_order=can_order, can_delete=can_delete)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   441
    FormSet.model = model
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   442
    return FormSet
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   443
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   444
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   445
# InlineFormSets #############################################################
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   446
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   447
class BaseInlineFormSet(BaseModelFormSet):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   448
    """A formset for child objects related to a parent."""
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   449
    def __init__(self, data=None, files=None, instance=None,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   450
                 save_as_new=False, prefix=None):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   451
        from django.db.models.fields.related import RelatedObject
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   452
        self.instance = instance
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   453
        self.save_as_new = save_as_new
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   454
        # is there a better way to get the object descriptor?
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   455
        self.rel_name = RelatedObject(self.fk.rel.to, self.model, self.fk).get_accessor_name()
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   456
        super(BaseInlineFormSet, self).__init__(data, files, prefix=prefix or self.rel_name)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   457
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   458
    def _construct_forms(self):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   459
        if self.save_as_new:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   460
            self._total_form_count = self._initial_form_count
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   461
            self._initial_form_count = 0
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   462
        super(BaseInlineFormSet, self)._construct_forms()
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   463
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   464
    def _construct_form(self, i, **kwargs):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   465
        form = super(BaseInlineFormSet, self)._construct_form(i, **kwargs)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   466
        if self.save_as_new:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   467
            # Remove the primary key from the form's data, we are only
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   468
            # creating new instances
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   469
            form.data[form.add_prefix(self._pk_field.name)] = None
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   470
        return form
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   471
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   472
    def get_queryset(self):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   473
        """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   474
        Returns this FormSet's queryset, but restricted to children of
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   475
        self.instance
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   476
        """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   477
        kwargs = {self.fk.name: self.instance}
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   478
        return self.model._default_manager.filter(**kwargs)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   479
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   480
    def save_new(self, form, commit=True):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   481
        kwargs = {self.fk.get_attname(): self.instance.pk}
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   482
        new_obj = self.model(**kwargs)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   483
        return save_instance(form, new_obj, exclude=[self._pk_field.name], commit=commit)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   484
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   485
    def add_fields(self, form, index):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   486
        super(BaseInlineFormSet, self).add_fields(form, index)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   487
        if self._pk_field == self.fk:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   488
            form.fields[self._pk_field.name] = IntegerField(required=False, widget=HiddenInput)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   489
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   490
def _get_foreign_key(parent_model, model, fk_name=None):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   491
    """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   492
    Finds and returns the ForeignKey from model to parent if there is one.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   493
    If fk_name is provided, assume it is the name of the ForeignKey field.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   494
    """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   495
    # avoid circular import
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   496
    from django.db.models import ForeignKey
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   497
    opts = model._meta
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   498
    if fk_name:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   499
        fks_to_parent = [f for f in opts.fields if f.name == fk_name]
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   500
        if len(fks_to_parent) == 1:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   501
            fk = fks_to_parent[0]
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   502
            if not isinstance(fk, ForeignKey) or \
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   503
                    (fk.rel.to != parent_model and
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   504
                     fk.rel.to not in parent_model._meta.get_parent_list()):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   505
                raise Exception("fk_name '%s' is not a ForeignKey to %s" % (fk_name, parent_model))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   506
        elif len(fks_to_parent) == 0:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   507
            raise Exception("%s has no field named '%s'" % (model, fk_name))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   508
    else:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   509
        # Try to discover what the ForeignKey from model to parent_model is
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   510
        fks_to_parent = [
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   511
            f for f in opts.fields
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   512
            if isinstance(f, ForeignKey)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   513
            and (f.rel.to == parent_model
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   514
                or f.rel.to in parent_model._meta.get_parent_list())
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   515
        ]
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   516
        if len(fks_to_parent) == 1:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   517
            fk = fks_to_parent[0]
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   518
        elif len(fks_to_parent) == 0:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   519
            raise Exception("%s has no ForeignKey to %s" % (model, parent_model))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   520
        else:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   521
            raise Exception("%s has more than 1 ForeignKey to %s" % (model, parent_model))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   522
    return fk
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   523
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   524
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   525
def inlineformset_factory(parent_model, model, form=ModelForm,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   526
                          formset=BaseInlineFormSet, fk_name=None,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   527
                          fields=None, exclude=None,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   528
                          extra=3, can_order=False, can_delete=True, max_num=0,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   529
                          formfield_callback=lambda f: f.formfield()):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   530
    """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   531
    Returns an ``InlineFormSet`` for the given kwargs.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   532
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   533
    You must provide ``fk_name`` if ``model`` has more than one ``ForeignKey``
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   534
    to ``parent_model``.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   535
    """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   536
    fk = _get_foreign_key(parent_model, model, fk_name=fk_name)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   537
    # enforce a max_num=1 when the foreign key to the parent model is unique.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   538
    if fk.unique:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   539
        max_num = 1
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   540
    if exclude is not None:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   541
        exclude = list(exclude)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   542
        exclude.append(fk.name)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   543
    else:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   544
        exclude = [fk.name]
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   545
    kwargs = {
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   546
        'form': form,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   547
        'formfield_callback': formfield_callback,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   548
        'formset': formset,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   549
        'extra': extra,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   550
        'can_delete': can_delete,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   551
        'can_order': can_order,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   552
        'fields': fields,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   553
        'exclude': exclude,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   554
        'max_num': max_num,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   555
    }
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   556
    FormSet = modelformset_factory(model, **kwargs)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   557
    FormSet.fk = fk
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   558
    return FormSet
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   559
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   560
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   561
# Fields #####################################################################
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   562
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   563
class ModelChoiceIterator(object):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   564
    def __init__(self, field):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   565
        self.field = field
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   566
        self.queryset = field.queryset
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   567
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   568
    def __iter__(self):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   569
        if self.field.empty_label is not None:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   570
            yield (u"", self.field.empty_label)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   571
        if self.field.cache_choices:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   572
            if self.field.choice_cache is None:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   573
                self.field.choice_cache = [
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   574
                    self.choice(obj) for obj in self.queryset.all()
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   575
                ]
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   576
            for choice in self.field.choice_cache:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   577
                yield choice
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   578
        else:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   579
            for obj in self.queryset.all():
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   580
                yield self.choice(obj)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   581
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   582
    def choice(self, obj):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   583
        if self.field.to_field_name:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   584
            # FIXME: The try..except shouldn't be necessary here. But this is
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   585
            # going in just before 1.0, so I want to be careful. Will check it
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   586
            # out later.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   587
            try:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   588
                key = getattr(obj, self.field.to_field_name).pk
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   589
            except AttributeError:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   590
                key = getattr(obj, self.field.to_field_name)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   591
        else:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   592
            key = obj.pk
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   593
        return (key, self.field.label_from_instance(obj))
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   594
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   595
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   596
class ModelChoiceField(ChoiceField):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   597
    """A ChoiceField whose choices are a model QuerySet."""
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   598
    # This class is a subclass of ChoiceField for purity, but it doesn't
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   599
    # actually use any of ChoiceField's implementation.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   600
    default_error_messages = {
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   601
        'invalid_choice': _(u'Select a valid choice. That choice is not one of'
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   602
                            u' the available choices.'),
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   603
    }
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   604
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   605
    def __init__(self, queryset, empty_label=u"---------", cache_choices=False,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   606
                 required=True, widget=None, label=None, initial=None,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   607
                 help_text=None, to_field_name=None, *args, **kwargs):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   608
        self.empty_label = empty_label
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   609
        self.cache_choices = cache_choices
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   610
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   611
        # Call Field instead of ChoiceField __init__() because we don't need
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   612
        # ChoiceField.__init__().
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   613
        Field.__init__(self, required, widget, label, initial, help_text,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   614
                       *args, **kwargs)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   615
        self.queryset = queryset
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   616
        self.choice_cache = None
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   617
        self.to_field_name = to_field_name
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   618
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   619
    def _get_queryset(self):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   620
        return self._queryset
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   621
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   622
    def _set_queryset(self, queryset):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   623
        self._queryset = queryset
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   624
        self.widget.choices = self.choices
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   625
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   626
    queryset = property(_get_queryset, _set_queryset)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   627
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   628
    # this method will be used to create object labels by the QuerySetIterator.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   629
    # Override it to customize the label.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   630
    def label_from_instance(self, obj):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   631
        """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   632
        This method is used to convert objects into strings; it's used to
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   633
        generate the labels for the choices presented by this object. Subclasses
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   634
        can override this method to customize the display of the choices.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   635
        """
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   636
        return smart_unicode(obj)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   637
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   638
    def _get_choices(self):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   639
        # If self._choices is set, then somebody must have manually set
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   640
        # the property self.choices. In this case, just return self._choices.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   641
        if hasattr(self, '_choices'):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   642
            return self._choices
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   643
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   644
        # Otherwise, execute the QuerySet in self.queryset to determine the
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   645
        # choices dynamically. Return a fresh QuerySetIterator that has not been
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   646
        # consumed. Note that we're instantiating a new QuerySetIterator *each*
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   647
        # time _get_choices() is called (and, thus, each time self.choices is
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   648
        # accessed) so that we can ensure the QuerySet has not been consumed. This
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   649
        # construct might look complicated but it allows for lazy evaluation of
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   650
        # the queryset.
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   651
        return ModelChoiceIterator(self)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   652
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   653
    choices = property(_get_choices, ChoiceField._set_choices)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   654
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   655
    def clean(self, value):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   656
        Field.clean(self, value)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   657
        if value in EMPTY_VALUES:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   658
            return None
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   659
        try:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   660
            key = self.to_field_name or 'pk'
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   661
            value = self.queryset.get(**{key: value})
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   662
        except self.queryset.model.DoesNotExist:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   663
            raise ValidationError(self.error_messages['invalid_choice'])
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   664
        return value
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   665
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   666
class ModelMultipleChoiceField(ModelChoiceField):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   667
    """A MultipleChoiceField whose choices are a model QuerySet."""
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   668
    widget = SelectMultiple
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   669
    hidden_widget = MultipleHiddenInput
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   670
    default_error_messages = {
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   671
        'list': _(u'Enter a list of values.'),
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   672
        'invalid_choice': _(u'Select a valid choice. %s is not one of the'
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   673
                            u' available choices.'),
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   674
    }
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   675
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   676
    def __init__(self, queryset, cache_choices=False, required=True,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   677
                 widget=None, label=None, initial=None,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   678
                 help_text=None, *args, **kwargs):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   679
        super(ModelMultipleChoiceField, self).__init__(queryset, None,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   680
            cache_choices, required, widget, label, initial, help_text,
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   681
            *args, **kwargs)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   682
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   683
    def clean(self, value):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   684
        if self.required and not value:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   685
            raise ValidationError(self.error_messages['required'])
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   686
        elif not self.required and not value:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   687
            return []
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   688
        if not isinstance(value, (list, tuple)):
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   689
            raise ValidationError(self.error_messages['list'])
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   690
        final_values = []
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   691
        for val in value:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   692
            try:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   693
                obj = self.queryset.get(pk=val)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   694
            except self.queryset.model.DoesNotExist:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   695
                raise ValidationError(self.error_messages['invalid_choice'] % val)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   696
            else:
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   697
                final_values.append(obj)
ff1a9aa48cfd Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
diff changeset
   698
        return final_values