Add missing constraint.

[wolnelektury.git] / src / picture / models.py

diff --git a/src/picture/models.py b/src/picture/models.py
index 7ccd97c..b9ddcae 100644 (file)
--- 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
 
@@ -136,6 +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: