author | Sverre Rabbelier <srabbelier@gmail.com> |
Mon, 09 Mar 2009 19:37:56 +0000 | |
changeset 1778 | 660502cad63a |
parent 323 | ff1a9aa48cfd |
permissions | -rw-r--r-- |
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import sys |
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from django.core.management.color import color_style |
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from django.utils.itercompat import is_iterable |
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|
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class ModelErrorCollection: |
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def __init__(self, outfile=sys.stdout): |
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self.errors = [] |
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self.outfile = outfile |
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self.style = color_style() |
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|
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def add(self, context, error): |
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self.errors.append((context, error)) |
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self.outfile.write(self.style.ERROR("%s: %s\n" % (context, error))) |
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|
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def get_validation_errors(outfile, app=None): |
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""" |
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Validates all models that are part of the specified app. If no app name is provided, |
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validates all models of all installed apps. Writes errors, if any, to outfile. |
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Returns number of errors. |
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""" |
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from django.conf import settings |
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from django.db import models, connection |
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from django.db.models.loading import get_app_errors |
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from django.db.models.fields.related import RelatedObject |
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|
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e = ModelErrorCollection(outfile) |
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|
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for (app_name, error) in get_app_errors().items(): |
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e.add(app_name, error) |
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|
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for cls in models.get_models(app): |
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opts = cls._meta |
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|
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# Do field-specific validation. |
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for f in opts.local_fields: |
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if f.name == 'id' and not f.primary_key and opts.pk.name == 'id': |
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e.add(opts, '"%s": You can\'t use "id" as a field name, because each model automatically gets an "id" field if none of the fields have primary_key=True. You need to either remove/rename your "id" field or add primary_key=True to a field.' % f.name) |
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if f.name.endswith('_'): |
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e.add(opts, '"%s": Field names cannot end with underscores, because this would lead to ambiguous queryset filters.' % f.name) |
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if isinstance(f, models.CharField) and f.max_length in (None, 0): |
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e.add(opts, '"%s": CharFields require a "max_length" attribute.' % f.name) |
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if isinstance(f, models.DecimalField): |
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if f.decimal_places is None: |
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e.add(opts, '"%s": DecimalFields require a "decimal_places" attribute.' % f.name) |
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if f.max_digits is None: |
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e.add(opts, '"%s": DecimalFields require a "max_digits" attribute.' % f.name) |
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if isinstance(f, models.FileField) and not f.upload_to: |
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e.add(opts, '"%s": FileFields require an "upload_to" attribute.' % f.name) |
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if isinstance(f, models.ImageField): |
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try: |
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from PIL import Image |
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except ImportError: |
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e.add(opts, '"%s": To use ImageFields, you need to install the Python Imaging Library. Get it at http://www.pythonware.com/products/pil/ .' % f.name) |
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if f.choices: |
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if isinstance(f.choices, basestring) or not is_iterable(f.choices): |
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e.add(opts, '"%s": "choices" should be iterable (e.g., a tuple or list).' % f.name) |
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else: |
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for c in f.choices: |
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if not type(c) in (tuple, list) or len(c) != 2: |
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e.add(opts, '"%s": "choices" should be a sequence of two-tuples.' % f.name) |
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if f.db_index not in (None, True, False): |
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e.add(opts, '"%s": "db_index" should be either None, True or False.' % f.name) |
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# Perform any backend-specific field validation. |
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connection.validation.validate_field(e, opts, f) |
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# Check to see if the related field will clash with any existing |
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# fields, m2m fields, m2m related objects or related objects |
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if f.rel: |
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if f.rel.to not in models.get_models(): |
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e.add(opts, "'%s' has a relation with model %s, which has either not been installed or is abstract." % (f.name, f.rel.to)) |
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# it is a string and we could not find the model it refers to |
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# so skip the next section |
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if isinstance(f.rel.to, (str, unicode)): |
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continue |
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rel_opts = f.rel.to._meta |
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rel_name = RelatedObject(f.rel.to, cls, f).get_accessor_name() |
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rel_query_name = f.related_query_name() |
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for r in rel_opts.fields: |
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if r.name == rel_name: |
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e.add(opts, "Accessor for field '%s' clashes with field '%s.%s'. Add a related_name argument to the definition for '%s'." % (f.name, rel_opts.object_name, r.name, f.name)) |
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if r.name == rel_query_name: |
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e.add(opts, "Reverse query name for field '%s' clashes with field '%s.%s'. Add a related_name argument to the definition for '%s'." % (f.name, rel_opts.object_name, r.name, f.name)) |
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for r in rel_opts.local_many_to_many: |
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if r.name == rel_name: |
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e.add(opts, "Accessor for field '%s' clashes with m2m field '%s.%s'. Add a related_name argument to the definition for '%s'." % (f.name, rel_opts.object_name, r.name, f.name)) |
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if r.name == rel_query_name: |
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e.add(opts, "Reverse query name for field '%s' clashes with m2m field '%s.%s'. Add a related_name argument to the definition for '%s'." % (f.name, rel_opts.object_name, r.name, f.name)) |
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for r in rel_opts.get_all_related_many_to_many_objects(): |
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if r.get_accessor_name() == rel_name: |
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e.add(opts, "Accessor for field '%s' clashes with related m2m field '%s.%s'. Add a related_name argument to the definition for '%s'." % (f.name, rel_opts.object_name, r.get_accessor_name(), f.name)) |
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if r.get_accessor_name() == rel_query_name: |
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e.add(opts, "Reverse query name for field '%s' clashes with related m2m field '%s.%s'. Add a related_name argument to the definition for '%s'." % (f.name, rel_opts.object_name, r.get_accessor_name(), f.name)) |
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for r in rel_opts.get_all_related_objects(): |
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if r.field is not f: |
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if r.get_accessor_name() == rel_name: |
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e.add(opts, "Accessor for field '%s' clashes with related field '%s.%s'. Add a related_name argument to the definition for '%s'." % (f.name, rel_opts.object_name, r.get_accessor_name(), f.name)) |
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if r.get_accessor_name() == rel_query_name: |
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e.add(opts, "Reverse query name for field '%s' clashes with related field '%s.%s'. Add a related_name argument to the definition for '%s'." % (f.name, rel_opts.object_name, r.get_accessor_name(), f.name)) |
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101 |
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102 |
seen_intermediary_signatures = [] |
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changeset
|
103 |
for i, f in enumerate(opts.local_many_to_many): |
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parents:
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|
104 |
# Check to see if the related m2m field will clash with any |
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|
105 |
# existing fields, m2m fields, m2m related objects or related |
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parents:
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|
106 |
# objects |
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|
107 |
if f.rel.to not in models.get_models(): |
323
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diff
changeset
|
108 |
e.add(opts, "'%s' has an m2m relation with model %s, which has either not been installed or is abstract." % (f.name, f.rel.to)) |
54
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|
109 |
# it is a string and we could not find the model it refers to |
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|
110 |
# so skip the next section |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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|
111 |
if isinstance(f.rel.to, (str, unicode)): |
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|
112 |
continue |
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|
113 |
|
323
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diff
changeset
|
114 |
# Check that the field is not set to unique. ManyToManyFields do not support unique. |
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changeset
|
115 |
if f.unique: |
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diff
changeset
|
116 |
e.add(opts, "ManyToManyFields cannot be unique. Remove the unique argument on '%s'." % f.name) |
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|
117 |
|
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|
118 |
if getattr(f.rel, 'through', None) is not None: |
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|
119 |
if hasattr(f.rel, 'through_model'): |
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|
120 |
from_model, to_model = cls, f.rel.to |
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|
121 |
if from_model == to_model and f.rel.symmetrical: |
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|
122 |
e.add(opts, "Many-to-many fields with intermediate tables cannot be symmetrical.") |
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diff
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|
123 |
seen_from, seen_to, seen_self = False, False, 0 |
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|
124 |
for inter_field in f.rel.through_model._meta.fields: |
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|
125 |
rel_to = getattr(inter_field.rel, 'to', None) |
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|
126 |
if from_model == to_model: # relation to self |
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|
127 |
if rel_to == from_model: |
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|
128 |
seen_self += 1 |
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|
129 |
if seen_self > 2: |
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|
130 |
e.add(opts, "Intermediary model %s has more than two foreign keys to %s, which is ambiguous and is not permitted." % (f.rel.through_model._meta.object_name, from_model._meta.object_name)) |
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|
131 |
else: |
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|
132 |
if rel_to == from_model: |
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|
133 |
if seen_from: |
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|
134 |
e.add(opts, "Intermediary model %s has more than one foreign key to %s, which is ambiguous and is not permitted." % (f.rel.through_model._meta.object_name, from_model._meta.object_name)) |
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|
135 |
else: |
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|
136 |
seen_from = True |
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|
137 |
elif rel_to == to_model: |
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|
138 |
if seen_to: |
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|
139 |
e.add(opts, "Intermediary model %s has more than one foreign key to %s, which is ambiguous and is not permitted." % (f.rel.through_model._meta.object_name, rel_to._meta.object_name)) |
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|
140 |
else: |
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|
141 |
seen_to = True |
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|
142 |
if f.rel.through_model not in models.get_models(): |
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|
143 |
e.add(opts, "'%s' specifies an m2m relation through model %s, which has not been installed." % (f.name, f.rel.through)) |
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|
144 |
signature = (f.rel.to, cls, f.rel.through_model) |
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|
145 |
if signature in seen_intermediary_signatures: |
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|
146 |
e.add(opts, "The model %s has two manually-defined m2m relations through the model %s, which is not permitted. Please consider using an extra field on your intermediary model instead." % (cls._meta.object_name, f.rel.through_model._meta.object_name)) |
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|
147 |
else: |
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|
148 |
seen_intermediary_signatures.append(signature) |
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|
149 |
seen_related_fk, seen_this_fk = False, False |
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|
150 |
for field in f.rel.through_model._meta.fields: |
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|
151 |
if field.rel: |
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|
152 |
if not seen_related_fk and field.rel.to == f.rel.to: |
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|
153 |
seen_related_fk = True |
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|
154 |
elif field.rel.to == cls: |
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|
155 |
seen_this_fk = True |
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changeset
|
156 |
if not seen_related_fk or not seen_this_fk: |
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Load ../vendor/django into trunk/app/django.
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changeset
|
157 |
e.add(opts, "'%s' has a manually-defined m2m relation through model %s, which does not have foreign keys to %s and %s" % (f.name, f.rel.through, f.rel.to._meta.object_name, cls._meta.object_name)) |
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Load ../vendor/django into trunk/app/django.
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diff
changeset
|
158 |
else: |
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Load ../vendor/django into trunk/app/django.
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diff
changeset
|
159 |
e.add(opts, "'%s' specifies an m2m relation through model %s, which has not been installed" % (f.name, f.rel.through)) |
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Load ../vendor/django into trunk/app/django.
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diff
changeset
|
160 |
|
54
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|
161 |
rel_opts = f.rel.to._meta |
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|
162 |
rel_name = RelatedObject(f.rel.to, cls, f).get_accessor_name() |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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|
163 |
rel_query_name = f.related_query_name() |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
164 |
# If rel_name is none, there is no reverse accessor (this only |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
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changeset
|
165 |
# occurs for symmetrical m2m relations to self). If this is the |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
166 |
# case, there are no clashes to check for this field, as there are |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
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changeset
|
167 |
# no reverse descriptors for this field. |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
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changeset
|
168 |
if rel_name is not None: |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
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changeset
|
169 |
for r in rel_opts.fields: |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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changeset
|
170 |
if r.name == rel_name: |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
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changeset
|
171 |
e.add(opts, "Accessor for m2m field '%s' clashes with field '%s.%s'. Add a related_name argument to the definition for '%s'." % (f.name, rel_opts.object_name, r.name, f.name)) |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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changeset
|
172 |
if r.name == rel_query_name: |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
173 |
e.add(opts, "Reverse query name for m2m field '%s' clashes with field '%s.%s'. Add a related_name argument to the definition for '%s'." % (f.name, rel_opts.object_name, r.name, f.name)) |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
174 |
for r in rel_opts.local_many_to_many: |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
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changeset
|
175 |
if r.name == rel_name: |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
176 |
e.add(opts, "Accessor for m2m field '%s' clashes with m2m field '%s.%s'. Add a related_name argument to the definition for '%s'." % (f.name, rel_opts.object_name, r.name, f.name)) |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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|
177 |
if r.name == rel_query_name: |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
178 |
e.add(opts, "Reverse query name for m2m field '%s' clashes with m2m field '%s.%s'. Add a related_name argument to the definition for '%s'." % (f.name, rel_opts.object_name, r.name, f.name)) |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
179 |
for r in rel_opts.get_all_related_many_to_many_objects(): |
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|
180 |
if r.field is not f: |
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|
181 |
if r.get_accessor_name() == rel_name: |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
182 |
e.add(opts, "Accessor for m2m field '%s' clashes with related m2m field '%s.%s'. Add a related_name argument to the definition for '%s'." % (f.name, rel_opts.object_name, r.get_accessor_name(), f.name)) |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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diff
changeset
|
183 |
if r.get_accessor_name() == rel_query_name: |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
184 |
e.add(opts, "Reverse query name for m2m field '%s' clashes with related m2m field '%s.%s'. Add a related_name argument to the definition for '%s'." % (f.name, rel_opts.object_name, r.get_accessor_name(), f.name)) |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
185 |
for r in rel_opts.get_all_related_objects(): |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
186 |
if r.get_accessor_name() == rel_name: |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
187 |
e.add(opts, "Accessor for m2m field '%s' clashes with related field '%s.%s'. Add a related_name argument to the definition for '%s'." % (f.name, rel_opts.object_name, r.get_accessor_name(), f.name)) |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
188 |
if r.get_accessor_name() == rel_query_name: |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
189 |
e.add(opts, "Reverse query name for m2m field '%s' clashes with related field '%s.%s'. Add a related_name argument to the definition for '%s'." % (f.name, rel_opts.object_name, r.get_accessor_name(), f.name)) |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
190 |
|
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Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
191 |
# Check ordering attribute. |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
192 |
if opts.ordering: |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
193 |
for field_name in opts.ordering: |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
194 |
if field_name == '?': continue |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
195 |
if field_name.startswith('-'): |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
196 |
field_name = field_name[1:] |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
diff
changeset
|
197 |
if opts.order_with_respect_to and field_name == '_order': |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
198 |
continue |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
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199 |
# Skip ordering in the format field1__field2 (FIXME: checking |
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# this format would be nice, but it's a little fiddly). |
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201 |
if '_' in field_name: |
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202 |
continue |
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203 |
try: |
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204 |
opts.get_field(field_name, many_to_many=False) |
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205 |
except models.FieldDoesNotExist: |
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206 |
e.add(opts, '"ordering" refers to "%s", a field that doesn\'t exist.' % field_name) |
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207 |
|
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208 |
# Check unique_together. |
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209 |
for ut in opts.unique_together: |
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210 |
for field_name in ut: |
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211 |
try: |
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212 |
f = opts.get_field(field_name, many_to_many=True) |
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213 |
except models.FieldDoesNotExist: |
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214 |
e.add(opts, '"unique_together" refers to %s, a field that doesn\'t exist. Check your syntax.' % field_name) |
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215 |
else: |
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216 |
if isinstance(f.rel, models.ManyToManyRel): |
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217 |
e.add(opts, '"unique_together" refers to %s. ManyToManyFields are not supported in unique_together.' % f.name) |
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218 |
if f not in opts.local_fields: |
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219 |
e.add(opts, '"unique_together" refers to %s. This is not in the same model as the unique_together statement.' % f.name) |
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220 |
|
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221 |
return len(e.errors) |