small fixes

[wolnelektury.git] / apps / api / models.py

diff --git a/apps/api/models.py b/apps/api/models.py
index 8858162..20dd129 100644 (file)
--- a/apps/api/models.py
+++ b/apps/api/models.py
@@ -2,26 +2,38 @@
 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
+from django.contrib.contenttypes.models import ContentType
 from django.db import models
 from django.db.models.signals import pre_delete
+from django.utils.translation import ugettext_lazy as _
 
 from catalogue.models import Book, Tag
 
 
 class Deleted(models.Model):
     object_id = models.IntegerField()
-    type = models.CharField(max_length="50", db_index=True)
+    slug = models.SlugField(_('slug'), max_length=120, blank=True, db_index=True)
+    content_type = models.ForeignKey(ContentType)
+    category = models.CharField(max_length=64, null=True, blank=True, db_index=True)
     created_at = models.DateTimeField(editable=False, db_index=True)
     deleted_at = models.DateTimeField(auto_now_add=True, db_index=True)
 
     class Meta:
-        unique_together = (('type', 'object_id'),)
-
+        unique_together = (('content_type', 'object_id'),)
 
 
 def _pre_delete_handler(sender, instance, **kwargs):
     """ save deleted objects for change history purposes """
 
     if sender in (Book, Tag):
-        Deleted.objects.create(type=sender.__name__, object_id=instance.id, created_at=instance.created_at)
+        if sender == Tag:
+            if instance.category in ('book', 'set'):
+                return
+            else:
+                category = instance.category
+        else:
+            category = None
+        content_type = ContentType.objects.get_for_model(sender)
+        Deleted.objects.create(content_type=content_type, object_id=instance.id, 
+            created_at=instance.created_at, category=category, slug=instance.slug)
 pre_delete.connect(_pre_delete_handler)