tags wired to pictures

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

diff --git a/apps/catalogue/models/tag.py b/apps/catalogue/models/tag.py
index f7c5356..5b99b8f 100644 (file)
--- a/apps/catalogue/models/tag.py
+++ b/apps/catalogue/models/tag.py
@@ -3,9 +3,10 @@
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
 from django.contrib.auth.models import User
+from django.core.exceptions import ValidationError
 from django.db import models
 from django.db.models import permalink
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import ugettext, ugettext_lazy as _
 from newtagging.models import TagBase
 
 
@@ -18,6 +19,7 @@ TAG_CATEGORIES = (
     ('theme', _('theme')),
     ('set', _('set')),
     ('book', _('book')),
+    ('thing', _('thing')), # things shown on pictures
 )
 
 
@@ -35,6 +37,7 @@ class Tag(TagBase):
 
     user = models.ForeignKey(User, blank=True, null=True)
     book_count = models.IntegerField(_('book count'), blank=True, null=True)
+    picture_count = models.IntegerField(_('picture count'), blank=True, null=True)
     gazeta_link = models.CharField(blank=True, max_length=240)
     wiki_link = models.CharField(blank=True, max_length=240)
 
@@ -51,6 +54,7 @@ class Tag(TagBase):
         'gatunek': 'genre',
         'motyw': 'theme',
         'polka': 'set',
+        'obiekt': 'thing',
     }
     categories_dict = dict((item[::-1] for item in categories_rev.iteritems()))
 
@@ -71,6 +75,11 @@ class Tag(TagBase):
     def get_absolute_url(self):
         return ('catalogue.views.tagged_object_list', [self.url_chunk])
 
+    def clean(self):
+        if self.category == 'book' and (self.gazeta_link or self.wiki_link):
+            raise ValidationError(ugettext(
+                u"Book tags can't have attached links. Set them directly on the book instead of it's tag."))
+
     @classmethod
     @permalink
     def create_url(cls, category, slug):
@@ -102,6 +111,22 @@ class Tag(TagBase):
                     objects = objects.exclude(pk__in=descendants_keys)
         return objects.count()
 
+    # I shouldn't break the get_count() api 
+    # just to include pictures.
+    def get_picture_count(self):
+        from picture.models import Picture
+        
+        if self.category == 'book':
+            # never used
+            objects = Book.objects.none()
+        elif self.category == 'theme':
+            objects = Picture.tagged.with_all((self,))
+        elif self.category == 'thing':
+            objects = Picture.tagged.with_all((self,))
+        else:
+            objects = Picture.tagged.with_all((self,)).order_by()
+        return objects.count()
+        
     @staticmethod
     def get_tag_list(tags):
         if isinstance(tags, basestring):