Major reorganization of the soc svn repo, to merge into a single App Engine
image (to make development easier, now that only a single app will run all
Google Open Source programs).
from django import oldforms, template
from django.conf import settings
from django.contrib.admin.filterspecs import FilterSpec
from django.contrib.admin.views.decorators import staff_member_required
from django.views.decorators.cache import never_cache
from django.contrib.contenttypes.models import ContentType
from django.core.exceptions import ImproperlyConfigured, ObjectDoesNotExist, PermissionDenied
from django.core.paginator import QuerySetPaginator, InvalidPage
from django.shortcuts import get_object_or_404, render_to_response
from django.db import models
from django.db.models.query import QuerySet
from django.http import Http404, HttpResponse, HttpResponseRedirect
from django.utils.html import escape
from django.utils.text import capfirst, get_text_list
from django.utils.encoding import force_unicode, smart_str
from django.utils.translation import ugettext as _
from django.utils.safestring import mark_safe
import operator
try:
set
except NameError:
from sets import Set as set # Python 2.3 fallback
from django.contrib.admin.models import LogEntry, ADDITION, CHANGE, DELETION
if not LogEntry._meta.installed:
raise ImproperlyConfigured, "You'll need to put 'django.contrib.admin' in your INSTALLED_APPS setting before you can use the admin application."
if 'django.core.context_processors.auth' not in settings.TEMPLATE_CONTEXT_PROCESSORS:
raise ImproperlyConfigured, "You'll need to put 'django.core.context_processors.auth' in your TEMPLATE_CONTEXT_PROCESSORS setting before you can use the admin application."
# The system will display a "Show all" link on the change list only if the
# total result count is less than or equal to this setting.
MAX_SHOW_ALL_ALLOWED = 200
# Changelist settings
ALL_VAR = 'all'
ORDER_VAR = 'o'
ORDER_TYPE_VAR = 'ot'
PAGE_VAR = 'p'
SEARCH_VAR = 'q'
IS_POPUP_VAR = 'pop'
ERROR_FLAG = 'e'
# Text to display within change-list table cells if the value is blank.
EMPTY_CHANGELIST_VALUE = '(None)'
use_raw_id_admin = lambda field: isinstance(field.rel, (models.ManyToOneRel, models.ManyToManyRel)) and field.rel.raw_id_admin
class IncorrectLookupParameters(Exception):
pass
def quote(s):
"""
Ensure that primary key values do not confuse the admin URLs by escaping
any '/', '_' and ':' characters. Similar to urllib.quote, except that the
quoting is slightly different so that it doesn't get automatically
unquoted by the Web browser.
"""
if type(s) != type(''):
return s
res = list(s)
for i in range(len(res)):
c = res[i]
if c in ':/_':
res[i] = '_%02X' % ord(c)
return ''.join(res)
def unquote(s):
"""
Undo the effects of quote(). Based heavily on urllib.unquote().
"""
mychr = chr
myatoi = int
list = s.split('_')
res = [list[0]]
myappend = res.append
del list[0]
for item in list:
if item[1:2]:
try:
myappend(mychr(myatoi(item[:2], 16)) + item[2:])
except ValueError:
myappend('_' + item)
else:
myappend('_' + item)
return "".join(res)
def get_javascript_imports(opts, auto_populated_fields, field_sets):
# Put in any necessary JavaScript imports.
js = ['js/core.js', 'js/admin/RelatedObjectLookups.js']
if auto_populated_fields:
js.append('js/urlify.js')
if opts.has_field_type(models.DateTimeField) or opts.has_field_type(models.TimeField) or opts.has_field_type(models.DateField):
js.extend(['js/calendar.js', 'js/admin/DateTimeShortcuts.js'])
if opts.get_ordered_objects():
js.extend(['js/getElementsBySelector.js', 'js/dom-drag.js' , 'js/admin/ordering.js'])
if opts.admin.js:
js.extend(opts.admin.js)
seen_collapse = False
for field_set in field_sets:
if not seen_collapse and 'collapse' in field_set.classes:
seen_collapse = True
js.append('js/admin/CollapsedFieldsets.js')
for field_line in field_set:
try:
for f in field_line:
if f.rel and isinstance(f, models.ManyToManyField) and f.rel.filter_interface:
js.extend(['js/SelectBox.js' , 'js/SelectFilter2.js'])
raise StopIteration
except StopIteration:
break
return js
class AdminBoundField(object):
def __init__(self, field, field_mapping, original):
self.field = field
self.original = original
self.form_fields = [field_mapping[name] for name in self.field.get_manipulator_field_names('')]
self.element_id = self.form_fields[0].get_id()
self.has_label_first = not isinstance(self.field, models.BooleanField)
self.raw_id_admin = use_raw_id_admin(field)
self.is_date_time = isinstance(field, models.DateTimeField)
self.is_file_field = isinstance(field, models.FileField)
self.needs_add_label = field.rel and (isinstance(field.rel, models.ManyToOneRel) or isinstance(field.rel, models.ManyToManyRel)) and field.rel.to._meta.admin
self.hidden = isinstance(self.field, models.AutoField)
self.first = False
classes = []
if self.raw_id_admin:
classes.append('nowrap')
if max([bool(f.errors()) for f in self.form_fields]):
classes.append('error')
if classes:
self.cell_class_attribute = u' class="%s" ' % ' '.join(classes)
self._repr_filled = False
if field.rel:
self.related_url = mark_safe(u'../../../%s/%s/'
% (field.rel.to._meta.app_label,
field.rel.to._meta.object_name.lower()))
def original_value(self):
if self.original:
return self.original.__dict__[self.field.attname]
def existing_display(self):
try:
return self._display
except AttributeError:
if isinstance(self.field.rel, models.ManyToOneRel):
self._display = force_unicode(getattr(self.original, self.field.name), strings_only=True)
elif isinstance(self.field.rel, models.ManyToManyRel):
self._display = u", ".join([force_unicode(obj) for obj in getattr(self.original, self.field.name).all()])
return self._display
def __repr__(self):
return repr(self.__dict__)
def html_error_list(self):
return mark_safe(" ".join([form_field.html_error_list() for form_field in self.form_fields if form_field.errors]))
def original_url(self):
if self.is_file_field and self.original and self.field.attname:
url_method = getattr(self.original, 'get_%s_url' % self.field.attname)
if callable(url_method):
return url_method()
return ''
class AdminBoundFieldLine(object):
def __init__(self, field_line, field_mapping, original):
self.bound_fields = [field.bind(field_mapping, original, AdminBoundField) for field in field_line]
for bound_field in self:
bound_field.first = True
break
def __iter__(self):
for bound_field in self.bound_fields:
yield bound_field
def __len__(self):
return len(self.bound_fields)
class AdminBoundFieldSet(object):
def __init__(self, field_set, field_mapping, original):
self.name = field_set.name
self.classes = field_set.classes
self.description = field_set.description
self.bound_field_lines = [field_line.bind(field_mapping, original, AdminBoundFieldLine) for field_line in field_set]
def __iter__(self):
for bound_field_line in self.bound_field_lines:
yield bound_field_line
def __len__(self):
return len(self.bound_field_lines)
def render_change_form(model, manipulator, context, add=False, change=False, form_url=''):
opts = model._meta
app_label = opts.app_label
auto_populated_fields = [f for f in opts.fields if f.prepopulate_from]
field_sets = opts.admin.get_field_sets(opts)
original = getattr(manipulator, 'original_object', None)
bound_field_sets = [field_set.bind(context['form'], original, AdminBoundFieldSet) for field_set in field_sets]
first_form_field_id = bound_field_sets[0].bound_field_lines[0].bound_fields[0].form_fields[0].get_id();
ordered_objects = opts.get_ordered_objects()
inline_related_objects = opts.get_followed_related_objects(manipulator.follow)
extra_context = {
'add': add,
'change': change,
'has_delete_permission': context['perms'][app_label][opts.get_delete_permission()],
'has_change_permission': context['perms'][app_label][opts.get_change_permission()],
'has_file_field': opts.has_field_type(models.FileField),
'has_absolute_url': hasattr(model, 'get_absolute_url'),
'auto_populated_fields': auto_populated_fields,
'bound_field_sets': bound_field_sets,
'first_form_field_id': first_form_field_id,
'javascript_imports': get_javascript_imports(opts, auto_populated_fields, field_sets),
'ordered_objects': ordered_objects,
'inline_related_objects': inline_related_objects,
'form_url': mark_safe(form_url),
'opts': opts,
'content_type_id': ContentType.objects.get_for_model(model).id,
}
context.update(extra_context)
return render_to_response([
"admin/%s/%s/change_form.html" % (app_label, opts.object_name.lower()),
"admin/%s/change_form.html" % app_label,
"admin/change_form.html"], context_instance=context)
def index(request):
return render_to_response('admin/index.html', {'title': _('Site administration')}, context_instance=template.RequestContext(request))
index = staff_member_required(never_cache(index))
def add_stage(request, app_label, model_name, show_delete=False, form_url='', post_url=None, post_url_continue='../%s/', object_id_override=None):
model = models.get_model(app_label, model_name)
if model is None:
raise Http404("App %r, model %r, not found" % (app_label, model_name))
opts = model._meta
if not request.user.has_perm(app_label + '.' + opts.get_add_permission()):
raise PermissionDenied
if post_url is None:
if request.user.has_perm(app_label + '.' + opts.get_change_permission()):
# redirect to list view
post_url = '../'
else:
# Object list will give 'Permission Denied', so go back to admin home
post_url = '../../../'
manipulator = model.AddManipulator()
if request.POST:
new_data = request.POST.copy()
if opts.has_field_type(models.FileField):
new_data.update(request.FILES)
errors = manipulator.get_validation_errors(new_data)
manipulator.do_html2python(new_data)
if not errors:
new_object = manipulator.save(new_data)
pk_value = new_object._get_pk_val()
LogEntry.objects.log_action(request.user.id, ContentType.objects.get_for_model(model).id, pk_value, force_unicode(new_object), ADDITION)
msg = _('The %(name)s "%(obj)s" was added successfully.') % {'name': force_unicode(opts.verbose_name), 'obj': force_unicode(new_object)}
# Here, we distinguish between different save types by checking for
# the presence of keys in request.POST.
if "_continue" in request.POST:
request.user.message_set.create(message=msg + ' ' + _("You may edit it again below."))
if "_popup" in request.POST:
post_url_continue += "?_popup=1"
return HttpResponseRedirect(post_url_continue % pk_value)
if "_popup" in request.POST:
return HttpResponse('<script type="text/javascript">opener.dismissAddAnotherPopup(window, "%s", "%s");</script>' % \
# escape() calls force_unicode.
(escape(pk_value), escape(new_object)))
elif "_addanother" in request.POST:
request.user.message_set.create(message=msg + ' ' + (_("You may add another %s below.") % force_unicode(opts.verbose_name)))
return HttpResponseRedirect(request.path)
else:
request.user.message_set.create(message=msg)
return HttpResponseRedirect(post_url)
else:
# Add default data.
new_data = manipulator.flatten_data()
# Override the defaults with GET params, if they exist.
new_data.update(dict(request.GET.items()))
errors = {}
# Populate the FormWrapper.
form = oldforms.FormWrapper(manipulator, new_data, errors)
c = template.RequestContext(request, {
'title': _('Add %s') % force_unicode(opts.verbose_name),
'form': form,
'is_popup': '_popup' in request.REQUEST,
'show_delete': show_delete,
})
if object_id_override is not None:
c['object_id'] = object_id_override
return render_change_form(model, manipulator, c, add=True)
add_stage = staff_member_required(never_cache(add_stage))
def change_stage(request, app_label, model_name, object_id):
model = models.get_model(app_label, model_name)
object_id = unquote(object_id)
if model is None:
raise Http404("App %r, model %r, not found" % (app_label, model_name))
opts = model._meta
if not request.user.has_perm(app_label + '.' + opts.get_change_permission()):
raise PermissionDenied
if request.POST and "_saveasnew" in request.POST:
return add_stage(request, app_label, model_name, form_url='../../add/')
try:
manipulator = model.ChangeManipulator(object_id)
except model.DoesNotExist:
raise Http404('%s object with primary key %r does not exist' % (model_name, escape(object_id)))
if request.POST:
new_data = request.POST.copy()
if opts.has_field_type(models.FileField):
new_data.update(request.FILES)
errors = manipulator.get_validation_errors(new_data)
manipulator.do_html2python(new_data)
if not errors:
new_object = manipulator.save(new_data)
pk_value = new_object._get_pk_val()
# Construct the change message.
change_message = []
if manipulator.fields_added:
change_message.append(_('Added %s.') % get_text_list(manipulator.fields_added, _('and')))
if manipulator.fields_changed:
change_message.append(_('Changed %s.') % get_text_list(manipulator.fields_changed, _('and')))
if manipulator.fields_deleted:
change_message.append(_('Deleted %s.') % get_text_list(manipulator.fields_deleted, _('and')))
change_message = ' '.join(change_message)
if not change_message:
change_message = _('No fields changed.')
LogEntry.objects.log_action(request.user.id, ContentType.objects.get_for_model(model).id, pk_value, force_unicode(new_object), CHANGE, change_message)
msg = _('The %(name)s "%(obj)s" was changed successfully.') % {'name': force_unicode(opts.verbose_name), 'obj': force_unicode(new_object)}
if "_continue" in request.POST:
request.user.message_set.create(message=msg + ' ' + _("You may edit it again below."))
if '_popup' in request.REQUEST:
return HttpResponseRedirect(request.path + "?_popup=1")
else:
return HttpResponseRedirect(request.path)
elif "_saveasnew" in request.POST:
request.user.message_set.create(message=_('The %(name)s "%(obj)s" was added successfully. You may edit it again below.') % {'name': force_unicode(opts.verbose_name), 'obj': force_unicode(new_object)})
return HttpResponseRedirect("../%s/" % pk_value)
elif "_addanother" in request.POST:
request.user.message_set.create(message=msg + ' ' + (_("You may add another %s below.") % force_unicode(opts.verbose_name)))
return HttpResponseRedirect("../add/")
else:
request.user.message_set.create(message=msg)
return HttpResponseRedirect("../")
else:
# Populate new_data with a "flattened" version of the current data.
new_data = manipulator.flatten_data()
# TODO: do this in flatten_data...
# If the object has ordered objects on its admin page, get the existing
# order and flatten it into a comma-separated list of IDs.
id_order_list = []
for rel_obj in opts.get_ordered_objects():
id_order_list.extend(getattr(manipulator.original_object, 'get_%s_order' % rel_obj.object_name.lower())())
if id_order_list:
new_data['order_'] = ','.join(map(str, id_order_list))
errors = {}
# Populate the FormWrapper.
form = oldforms.FormWrapper(manipulator, new_data, errors)
form.original = manipulator.original_object
form.order_objects = []
#TODO Should be done in flatten_data / FormWrapper construction
for related in opts.get_followed_related_objects():
wrt = related.opts.order_with_respect_to
if wrt and wrt.rel and wrt.rel.to == opts:
func = getattr(manipulator.original_object, 'get_%s_list' %
related.get_accessor_name())
orig_list = func()
form.order_objects.extend(orig_list)
c = template.RequestContext(request, {
'title': _('Change %s') % force_unicode(opts.verbose_name),
'form': form,
'object_id': object_id,
'original': manipulator.original_object,
'is_popup': '_popup' in request.REQUEST,
})
return render_change_form(model, manipulator, c, change=True)
change_stage = staff_member_required(never_cache(change_stage))
def _nest_help(obj, depth, val):
current = obj
for i in range(depth):
current = current[-1]
current.append(val)
def _get_deleted_objects(deleted_objects, perms_needed, user, obj, opts, current_depth):
"Helper function that recursively populates deleted_objects."
nh = _nest_help # Bind to local variable for performance
if current_depth > 16:
return # Avoid recursing too deep.
opts_seen = []
for related in opts.get_all_related_objects():
if related.opts in opts_seen:
continue
opts_seen.append(related.opts)
rel_opts_name = related.get_accessor_name()
if isinstance(related.field.rel, models.OneToOneRel):
try:
sub_obj = getattr(obj, rel_opts_name)
except ObjectDoesNotExist:
pass
else:
if related.opts.admin:
p = '%s.%s' % (related.opts.app_label, related.opts.get_delete_permission())
if not user.has_perm(p):
perms_needed.add(related.opts.verbose_name)
# We don't care about populating deleted_objects now.
continue
if related.field.rel.edit_inline or not related.opts.admin:
# Don't display link to edit, because it either has no
# admin or is edited inline.
nh(deleted_objects, current_depth, [mark_safe(u'%s: %s' % (force_unicode(capfirst(related.opts.verbose_name)), sub_obj)), []])
else:
# Display a link to the admin page.
nh(deleted_objects, current_depth, [mark_safe(u'%s: <a href="../../../../%s/%s/%s/">%s</a>' %
(escape(force_unicode(capfirst(related.opts.verbose_name))),
related.opts.app_label,
related.opts.object_name.lower(),
sub_obj._get_pk_val(), sub_obj)), []])
_get_deleted_objects(deleted_objects, perms_needed, user, sub_obj, related.opts, current_depth+2)
else:
has_related_objs = False
for sub_obj in getattr(obj, rel_opts_name).all():
has_related_objs = True
if related.field.rel.edit_inline or not related.opts.admin:
# Don't display link to edit, because it either has no
# admin or is edited inline.
nh(deleted_objects, current_depth, [u'%s: %s' % (force_unicode(capfirst(related.opts.verbose_name)), escape(sub_obj)), []])
else:
# Display a link to the admin page.
nh(deleted_objects, current_depth, [mark_safe(u'%s: <a href="../../../../%s/%s/%s/">%s</a>' % \
(escape(force_unicode(capfirst(related.opts.verbose_name))), related.opts.app_label, related.opts.object_name.lower(), sub_obj._get_pk_val(), escape(sub_obj))), []])
_get_deleted_objects(deleted_objects, perms_needed, user, sub_obj, related.opts, current_depth+2)
# If there were related objects, and the user doesn't have
# permission to delete them, add the missing perm to perms_needed.
if related.opts.admin and has_related_objs:
p = '%s.%s' % (related.opts.app_label, related.opts.get_delete_permission())
if not user.has_perm(p):
perms_needed.add(related.opts.verbose_name)
for related in opts.get_all_related_many_to_many_objects():
if related.opts in opts_seen:
continue
opts_seen.append(related.opts)
rel_opts_name = related.get_accessor_name()
has_related_objs = False
# related.get_accessor_name() could return None for symmetrical relationships
if rel_opts_name:
rel_objs = getattr(obj, rel_opts_name, None)
if rel_objs:
has_related_objs = True
if has_related_objs:
for sub_obj in rel_objs.all():
if related.field.rel.edit_inline or not related.opts.admin:
# Don't display link to edit, because it either has no
# admin or is edited inline.
nh(deleted_objects, current_depth, [_('One or more %(fieldname)s in %(name)s: %(obj)s') % \
{'fieldname': force_unicode(related.field.verbose_name), 'name': force_unicode(related.opts.verbose_name), 'obj': escape(sub_obj)}, []])
else:
# Display a link to the admin page.
nh(deleted_objects, current_depth, [
mark_safe((_('One or more %(fieldname)s in %(name)s:') % {'fieldname': escape(force_unicode(related.field.verbose_name)), 'name': escape(force_unicode(related.opts.verbose_name))}) + \
(u' <a href="../../../../%s/%s/%s/">%s</a>' % \
(related.opts.app_label, related.opts.module_name, sub_obj._get_pk_val(), escape(sub_obj)))), []])
# If there were related objects, and the user doesn't have
# permission to change them, add the missing perm to perms_needed.
if related.opts.admin and has_related_objs:
p = u'%s.%s' % (related.opts.app_label, related.opts.get_change_permission())
if not user.has_perm(p):
perms_needed.add(related.opts.verbose_name)
def delete_stage(request, app_label, model_name, object_id):
model = models.get_model(app_label, model_name)
object_id = unquote(object_id)
if model is None:
raise Http404("App %r, model %r, not found" % (app_label, model_name))
opts = model._meta
if not request.user.has_perm(app_label + '.' + opts.get_delete_permission()):
raise PermissionDenied
obj = get_object_or_404(model, pk=object_id)
# Populate deleted_objects, a data structure of all related objects that
# will also be deleted.
deleted_objects = [mark_safe(u'%s: <a href="../../%s/">%s</a>' % (escape(force_unicode(capfirst(opts.verbose_name))), force_unicode(object_id), escape(obj))), []]
perms_needed = set()
_get_deleted_objects(deleted_objects, perms_needed, request.user, obj, opts, 1)
if request.POST: # The user has already confirmed the deletion.
if perms_needed:
raise PermissionDenied
obj_display = force_unicode(obj)
obj.delete()
LogEntry.objects.log_action(request.user.id, ContentType.objects.get_for_model(model).id, object_id, obj_display, DELETION)
request.user.message_set.create(message=_('The %(name)s "%(obj)s" was deleted successfully.') % {'name': force_unicode(opts.verbose_name), 'obj': obj_display})
return HttpResponseRedirect("../../")
extra_context = {
"title": _("Are you sure?"),
"object_name": force_unicode(opts.verbose_name),
"object": obj,
"deleted_objects": deleted_objects,
"perms_lacking": perms_needed,
"opts": model._meta,
}
return render_to_response(["admin/%s/%s/delete_confirmation.html" % (app_label, opts.object_name.lower() ),
"admin/%s/delete_confirmation.html" % app_label ,
"admin/delete_confirmation.html"], extra_context, context_instance=template.RequestContext(request))
delete_stage = staff_member_required(never_cache(delete_stage))
def history(request, app_label, model_name, object_id):
model = models.get_model(app_label, model_name)
object_id = unquote(object_id)
if model is None:
raise Http404("App %r, model %r, not found" % (app_label, model_name))
action_list = LogEntry.objects.filter(object_id=object_id,
content_type__id__exact=ContentType.objects.get_for_model(model).id).select_related().order_by('action_time')
# If no history was found, see whether this object even exists.
obj = get_object_or_404(model, pk=object_id)
extra_context = {
'title': _('Change history: %s') % obj,
'action_list': action_list,
'module_name': force_unicode(capfirst(model._meta.verbose_name_plural)),
'object': obj,
}
return render_to_response(["admin/%s/%s/object_history.html" % (app_label, model._meta.object_name.lower()),
"admin/%s/object_history.html" % app_label ,
"admin/object_history.html"], extra_context, context_instance=template.RequestContext(request))
history = staff_member_required(never_cache(history))
class ChangeList(object):
def __init__(self, request, model):
self.model = model
self.opts = model._meta
self.lookup_opts = self.opts
self.manager = self.opts.admin.manager
# Get search parameters from the query string.
try:
self.page_num = int(request.GET.get(PAGE_VAR, 0))
except ValueError:
self.page_num = 0
self.show_all = ALL_VAR in request.GET
self.is_popup = IS_POPUP_VAR in request.GET
self.params = dict(request.GET.items())
if PAGE_VAR in self.params:
del self.params[PAGE_VAR]
if ERROR_FLAG in self.params:
del self.params[ERROR_FLAG]
self.order_field, self.order_type = self.get_ordering()
self.query = request.GET.get(SEARCH_VAR, '')
self.query_set = self.get_query_set()
self.get_results(request)
self.title = (self.is_popup and _('Select %s') % force_unicode(self.opts.verbose_name) or _('Select %s to change') % force_unicode(self.opts.verbose_name))
self.filter_specs, self.has_filters = self.get_filters(request)
self.pk_attname = self.lookup_opts.pk.attname
def get_filters(self, request):
filter_specs = []
if self.lookup_opts.admin.list_filter and not self.opts.one_to_one_field:
filter_fields = [self.lookup_opts.get_field(field_name) \
for field_name in self.lookup_opts.admin.list_filter]
for f in filter_fields:
spec = FilterSpec.create(f, request, self.params, self.model)
if spec and spec.has_output():
filter_specs.append(spec)
return filter_specs, bool(filter_specs)
def get_query_string(self, new_params=None, remove=None):
if new_params is None: new_params = {}
if remove is None: remove = []
p = self.params.copy()
for r in remove:
for k in p.keys():
if k.startswith(r):
del p[k]
for k, v in new_params.items():
if k in p and v is None:
del p[k]
elif v is not None:
p[k] = v
return mark_safe('?' + '&'.join([u'%s=%s' % (k, v) for k, v in p.items()]).replace(' ', '%20'))
def get_results(self, request):
paginator = QuerySetPaginator(self.query_set, self.lookup_opts.admin.list_per_page)
# Get the number of objects, with admin filters applied.
try:
result_count = paginator.count
# Naked except! Because we don't have any other way of validating
# "params". They might be invalid if the keyword arguments are
# incorrect, or if the values are not in the correct type (which would
# result in a database error).
except:
raise IncorrectLookupParameters
# Get the total number of objects, with no admin filters applied.
# Perform a slight optimization: Check to see whether any filters were
# given. If not, use paginator.hits to calculate the number of objects,
# because we've already done paginator.hits and the value is cached.
if not self.query_set.query.where:
full_result_count = result_count
else:
full_result_count = self.manager.count()
can_show_all = result_count <= MAX_SHOW_ALL_ALLOWED
multi_page = result_count > self.lookup_opts.admin.list_per_page
# Get the list of objects to display on this page.
if (self.show_all and can_show_all) or not multi_page:
result_list = list(self.query_set)
else:
try:
result_list = paginator.page(self.page_num+1).object_list
except InvalidPage:
result_list = ()
self.result_count = result_count
self.full_result_count = full_result_count
self.result_list = result_list
self.can_show_all = can_show_all
self.multi_page = multi_page
self.paginator = paginator
def get_ordering(self):
lookup_opts, params = self.lookup_opts, self.params
# For ordering, first check the "ordering" parameter in the admin
# options, then check the object's default ordering. If neither of
# those exist, order descending by ID by default. Finally, look for
# manually-specified ordering from the query string.
ordering = lookup_opts.admin.ordering or lookup_opts.ordering or ['-' + lookup_opts.pk.name]
if ordering[0].startswith('-'):
order_field, order_type = ordering[0][1:], 'desc'
else:
order_field, order_type = ordering[0], 'asc'
if ORDER_VAR in params:
try:
field_name = lookup_opts.admin.list_display[int(params[ORDER_VAR])]
try:
f = lookup_opts.get_field(field_name)
except models.FieldDoesNotExist:
# see if field_name is a name of a non-field
# that allows sorting
try:
attr = getattr(lookup_opts.admin.manager.model, field_name)
order_field = attr.admin_order_field
except AttributeError:
pass
else:
if not isinstance(f.rel, models.ManyToOneRel) or not f.null:
order_field = f.name
except (IndexError, ValueError):
pass # Invalid ordering specified. Just use the default.
if ORDER_TYPE_VAR in params and params[ORDER_TYPE_VAR] in ('asc', 'desc'):
order_type = params[ORDER_TYPE_VAR]
return order_field, order_type
def get_query_set(self):
qs = self.manager.get_query_set()
lookup_params = self.params.copy() # a dictionary of the query string
for i in (ALL_VAR, ORDER_VAR, ORDER_TYPE_VAR, SEARCH_VAR, IS_POPUP_VAR):
if i in lookup_params:
del lookup_params[i]
for key, value in lookup_params.items():
if not isinstance(key, str):
# 'key' will be used as a keyword argument later, so Python
# requires it to be a string.
del lookup_params[key]
lookup_params[smart_str(key)] = value
# Apply lookup parameters from the query string.
qs = qs.filter(**lookup_params)
# Use select_related() if one of the list_display options is a field
# with a relationship.
if self.lookup_opts.admin.list_select_related:
qs = qs.select_related()
else:
for field_name in self.lookup_opts.admin.list_display:
try:
f = self.lookup_opts.get_field(field_name)
except models.FieldDoesNotExist:
pass
else:
if isinstance(f.rel, models.ManyToOneRel):
qs = qs.select_related()
break
# Set ordering.
if self.order_field:
qs = qs.order_by('%s%s' % ((self.order_type == 'desc' and '-' or ''), self.order_field))
# Apply keyword searches.
def construct_search(field_name):
if field_name.startswith('^'):
return "%s__istartswith" % field_name[1:]
elif field_name.startswith('='):
return "%s__iexact" % field_name[1:]
elif field_name.startswith('@'):
return "%s__search" % field_name[1:]
else:
return "%s__icontains" % field_name
if self.lookup_opts.admin.search_fields and self.query:
for bit in self.query.split():
or_queries = [models.Q(**{construct_search(field_name): bit}) for field_name in self.lookup_opts.admin.search_fields]
other_qs = QuerySet(self.model)
other_qs.dup_select_related(qs)
other_qs = other_qs.filter(reduce(operator.or_, or_queries))
qs = qs & other_qs
if self.opts.one_to_one_field:
qs = qs.complex_filter(self.opts.one_to_one_field.rel.limit_choices_to)
return qs
def url_for_result(self, result):
return "%s/" % quote(getattr(result, self.pk_attname))
def change_list(request, app_label, model_name):
model = models.get_model(app_label, model_name)
if model is None:
raise Http404("App %r, model %r, not found" % (app_label, model_name))
if not request.user.has_perm(app_label + '.' + model._meta.get_change_permission()):
raise PermissionDenied
try:
cl = ChangeList(request, model)
except IncorrectLookupParameters:
# Wacky lookup parameters were given, so redirect to the main
# changelist page, without parameters, and pass an 'invalid=1'
# parameter via the query string. If wacky parameters were given and
# the 'invalid=1' parameter was already in the query string, something
# is screwed up with the database, so display an error page.
if ERROR_FLAG in request.GET.keys():
return render_to_response('admin/invalid_setup.html', {'title': _('Database error')})
return HttpResponseRedirect(request.path + '?' + ERROR_FLAG + '=1')
c = template.RequestContext(request, {
'title': cl.title,
'is_popup': cl.is_popup,
'cl': cl,
})
c.update({'has_add_permission': c['perms'][app_label][cl.opts.get_add_permission()]}),
return render_to_response(['admin/%s/%s/change_list.html' % (app_label, cl.opts.object_name.lower()),
'admin/%s/change_list.html' % app_label,
'admin/change_list.html'], context_instance=c)
change_list = staff_member_required(never_cache(change_list))