X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/03715cba601c571ac35765daa5b6a97a004326cf..224e9f9ea36a6c39466fdb13cbc8c06bedfe8c76:/src/picture/models.py

diff --git a/src/picture/models.py b/src/picture/models.py
index 3a05ad8dc..b9ddcae9b 100644
--- a/src/picture/models.py
+++ b/src/picture/models.py
@@ -22,7 +22,7 @@ import re
 
 from PIL import Image
 
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 from newtagging import managers
 from os import path
 
@@ -101,6 +101,8 @@ class Picture(models.Model):
 
     short_html_url_name = 'picture_short'
 
+    is_picture = True
+
     class AlreadyExists(Exception):
         pass
 
@@ -134,6 +136,15 @@ class Picture(models.Model):
     def authors(self):
         return self.tags.filter(category='author')
 
+    def epochs(self):
+        return self.tags.filter(category='epoch')
+
+    def genres(self):
+        return self.tags.filter(category='genre')
+
+    def kinds(self):
+        return self.tags.filter(category='kind')
+
     def tag_unicode(self, category):
         relations = prefetched_relations(self, category)
         if relations: