X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/b2d342589a7889a3b096e7192453d53bd28eed7d..a04dc488f5fea78a2a51bde4b59b4aad50cf3204:/src/newtagging/models.py diff --git a/src/newtagging/models.py b/src/newtagging/models.py index 1d1b22185..83aabe4fc 100644 --- a/src/newtagging/models.py +++ b/src/newtagging/models.py @@ -3,12 +3,9 @@ Models and managers for generic tagging. """ -from django.contrib.contenttypes.fields import GenericForeignKey from django.contrib.contenttypes.models import ContentType from django.db import connection, models -from django.utils.translation import ugettext_lazy as _ from django.db.models.base import ModelBase -from django.core.exceptions import ObjectDoesNotExist from django.dispatch import Signal qn = connection.ops.quote_name @@ -197,42 +194,13 @@ class TaggedItemManager(models.Manager): ########## # Models # ########## -def create_intermediary_table_model(model): - """Create an intermediary table model for the specific tag model""" - name = model.__name__ + 'Relation' - - class Meta: - db_table = '%s_relation' % model._meta.db_table - unique_together = (('tag', 'content_type', 'object_id'),) - app_label = model._meta.app_label - - def obj_unicode(self): - try: - return u'%s [%s]' % (self.content_type.get_object_for_this_type(pk=self.object_id), self.tag) - except ObjectDoesNotExist: - return u' [%s]' % self.tag - - # Set up a dictionary to simulate declarations within a class - attrs = { - '__module__': model.__module__, - 'Meta': Meta, - 'tag': models.ForeignKey(model, verbose_name=_('tag'), related_name='items'), - 'content_type': models.ForeignKey(ContentType, verbose_name=_('content type')), - 'object_id': models.PositiveIntegerField(_('object id'), db_index=True), - 'content_object': GenericForeignKey('content_type', 'object_id'), - '__unicode__': obj_unicode, - } - - return type(name, (models.Model,), attrs) - class TagMeta(ModelBase): """Metaclass for tag models (models inheriting from TagBase).""" def __new__(mcs, name, bases, attrs): model = super(TagMeta, mcs).__new__(mcs, name, bases, attrs) if not model._meta.abstract: - # Create an intermediary table and register custom managers for concrete models - model.intermediary_table_model = create_intermediary_table_model(model) + # Register custom managers for concrete models TagManager(model.intermediary_table_model).contribute_to_class(model, 'objects') TaggedItemManager(model).contribute_to_class(model.intermediary_table_model, 'objects') return model