Auth+cache fixess

[wolnelektury.git] / src / catalogue / models / tag.py

diff --git a/src/catalogue/models/tag.py b/src/catalogue/models/tag.py
index 57935f8..31da256 100644 (file)
--- a/src/catalogue/models/tag.py
+++ b/src/catalogue/models/tag.py
@@ -3,13 +3,18 @@
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
 from django.conf import settings
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
 from django.conf import settings

+from django.contrib.contenttypes.fields import GenericForeignKey
+from django.contrib.contenttypes.models import ContentType

 from django.core.cache import caches
 from django.contrib.auth.models import User
 from django.core.cache import caches
 from django.contrib.auth.models import User

+from django.core.exceptions import ObjectDoesNotExist

 from django.db import models
 from django.db.models import permalink
 from django.db import models
 from django.db.models import permalink

+from django.db.models.query import Prefetch

 from django.dispatch import Signal
 from django.utils.translation import ugettext_lazy as _
 from django.dispatch import Signal
 from django.utils.translation import ugettext_lazy as _

-from newtagging.models import TagBase
+
+from newtagging.models import TagManager, TaggedItemManager

 from ssify import flush_ssi_includes
 
 
 from ssify import flush_ssi_includes
 
 


@@ -25,7 +30,27 @@ TAG_CATEGORIES = (
 )
 
 
 )
 
 

-class Tag(TagBase):
+class TagRelation(models.Model):
+
+    tag = models.ForeignKey('Tag', 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')
+
+    objects = TaggedItemManager()
+
+    class Meta:
+        db_table = 'catalogue_tag_relation'
+        unique_together = (('tag', 'content_type', 'object_id'),)
+
+    def __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'<deleted> [%s]' % self.tag
+
+
+class Tag(models.Model):

     """A tag attachable to books and fragments (and possibly anything).
 
     Used to represent searchable metadata (authors, epochs, genres, kinds),
     """A tag attachable to books and fragments (and possibly anything).
 
     Used to represent searchable metadata (authors, epochs, genres, kinds),


@@ -37,6 +62,9 @@ class Tag(TagBase):
         _('category'), max_length=50, blank=False, null=False, db_index=True, choices=TAG_CATEGORIES)
     description = models.TextField(_('description'), blank=True)
 
         _('category'), max_length=50, blank=False, null=False, db_index=True, choices=TAG_CATEGORIES)
     description = models.TextField(_('description'), blank=True)
 

+    for_books = models.BooleanField(default=False)
+    for_pictures = models.BooleanField(default=False)
+

     user = models.ForeignKey(User, blank=True, null=True)
     gazeta_link = models.CharField(blank=True, max_length=240)
     culturepl_link = models.CharField(blank=True, max_length=240)
     user = models.ForeignKey(User, blank=True, null=True)
     gazeta_link = models.CharField(blank=True, max_length=240)
     culturepl_link = models.CharField(blank=True, max_length=240)


@@ -47,8 +75,13 @@ class Tag(TagBase):
 
     after_change = Signal(providing_args=['instance', 'languages'])
 
 
     after_change = Signal(providing_args=['instance', 'languages'])
 

+    intermediary_table_model = TagRelation
+    objects = TagManager()
+

     class UrlDeprecationWarning(DeprecationWarning):
     class UrlDeprecationWarning(DeprecationWarning):

-        pass
+        def __init__(self, tags=None):
+            super(Tag.UrlDeprecationWarning, self).__init__()
+            self.tags = tags

 
     categories_rev = {
         'autor': 'author',
 
     categories_rev = {
         'autor': 'author',


@@ -136,6 +169,10 @@ class Tag(TagBase):
         else:
             return ''
 
         else:
             return ''
 

+    @property
+    def category_plural(self):
+        return self.category + 's'
+

     @permalink
     def get_absolute_url(self):
         return 'tagged_object_list', [self.url_chunk]
     @permalink
     def get_absolute_url(self):
         return 'tagged_object_list', [self.url_chunk]


@@ -144,57 +181,45 @@ class Tag(TagBase):
     def get_absolute_gallery_url(self):
         return 'tagged_object_list_gallery', [self.url_chunk]
 
     def get_absolute_gallery_url(self):
         return 'tagged_object_list_gallery', [self.url_chunk]
 

-    @classmethod
-    @permalink
-    def create_url(cls, category, slug):
-        return ('catalogue.views.tagged_object_list', [
-            '/'.join((cls.categories_dict[category], slug))
-        ])
-

     def has_description(self):
         return len(self.description) > 0
     has_description.short_description = _('description')
     has_description.boolean = True
 
     @staticmethod
     def has_description(self):
         return len(self.description) > 0
     has_description.short_description = _('description')
     has_description.boolean = True
 
     @staticmethod

-    def get_tag_list(tags):
-        if isinstance(tags, basestring):
-            if not tags:
-                return []
-            real_tags = []
-            ambiguous_slugs = []
-            category = None
-            deprecated = False
-            tags_splitted = tags.split('/')
-            for name in tags_splitted:
-                if category:
-                    real_tags.append(Tag.objects.get(slug=name, category=category))
-                    category = None
-                elif name in Tag.categories_rev:
-                    category = Tag.categories_rev[name]
-                else:
-                    try:
-                        real_tags.append(Tag.objects.get(slug=name))
-                        deprecated = True
-                    except Tag.MultipleObjectsReturned:
-                        ambiguous_slugs.append(name)
-
+    def get_tag_list(tag_str):
+        if not tag_str:
+            return []
+        tags = []
+        ambiguous_slugs = []
+        category = None
+        deprecated = False
+        tags_splitted = tag_str.split('/')
+        for name in tags_splitted:

             if category:
             if category:

-                # something strange left off
-                raise Tag.DoesNotExist()
-            if ambiguous_slugs:
-                # some tags should be qualified
-                e = Tag.MultipleObjectsReturned()
-                e.tags = real_tags
-                e.ambiguous_slugs = ambiguous_slugs
-                raise e
-            if deprecated:
-                e = Tag.UrlDeprecationWarning()
-                e.tags = real_tags
-                raise e
-            return real_tags
-        else:
-            return TagBase.get_tag_list(tags)
+                tags.append(Tag.objects.get(slug=name, category=category))
+                category = None
+            elif name in Tag.categories_rev:
+                category = Tag.categories_rev[name]
+            else:
+                try:
+                    tags.append(Tag.objects.get(slug=name))
+                    deprecated = True
+                except Tag.MultipleObjectsReturned:
+                    ambiguous_slugs.append(name)
+
+        if category:
+            # something strange left off
+            raise Tag.DoesNotExist()
+        if ambiguous_slugs:
+            # some tags should be qualified
+            e = Tag.MultipleObjectsReturned()
+            e.tags = tags
+            e.ambiguous_slugs = ambiguous_slugs
+            raise e
+        if deprecated:
+            raise Tag.UrlDeprecationWarning(tags=tags)
+        return tags

 
     @property
     def url_chunk(self):
 
     @property
     def url_chunk(self):


@@ -202,7 +227,7 @@ class Tag(TagBase):
 
     @staticmethod
     def tags_from_info(info):
 
     @staticmethod
     def tags_from_info(info):

-        from fnpdjango.utils.text.slughifi import slughifi
+        from slugify import slugify

         from sortify import sortify
         meta_tags = []
         categories = (('kinds', 'kind'), ('genres', 'genre'), ('authors', 'author'), ('epochs', 'epoch'))
         from sortify import sortify
         meta_tags = []
         categories = (('kinds', 'kind'), ('genres', 'genre'), ('authors', 'author'), ('epochs', 'epoch'))


@@ -223,7 +248,7 @@ class Tag(TagBase):
                     tag_name = tag_name.readable()
                 if lang == settings.LANGUAGE_CODE:
                     # Allow creating new tag, if it's in default language.
                     tag_name = tag_name.readable()
                 if lang == settings.LANGUAGE_CODE:
                     # Allow creating new tag, if it's in default language.

-                    tag, created = Tag.objects.get_or_create(slug=slughifi(tag_name), category=category)
+                    tag, created = Tag.objects.get_or_create(slug=slugify(tag_name), category=category)

                     if created:
                         tag_name = unicode(tag_name)
                         tag.name = tag_name
                     if created:
                         tag_name = unicode(tag_name)
                         tag.name = tag_name


@@ -243,5 +268,19 @@ class Tag(TagBase):
         return meta_tags
 
 
         return meta_tags
 
 

-# Pickle complains about not having this.
-TagRelation = Tag.intermediary_table_model
+TagRelation.tag_model = Tag
+
+
+def prefetch_relations(objects, category, only_name=True):
+    queryset = TagRelation.objects.filter(tag__category=category).select_related('tag')
+    if only_name:
+        queryset = queryset.only('tag__name_pl', 'object_id')
+    return objects.prefetch_related(
+        Prefetch('tag_relations', queryset=queryset, to_attr='%s_relations' % category))
+
+
+def prefetched_relations(obj, category):
+    if hasattr(obj, '%s_relations' % category):
+        return getattr(obj, '%s_relations' % category)
+    else:
+        return None