X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/5207c4d8ee23d6d5df532faa8103a34b1572e45f..14129c2a4e9b94274297efc32752f64a6a2b77a7:/apps/api/models.py

diff --git a/apps/api/models.py b/apps/api/models.py
index 8858162e6..2cdc74a4b 100644
--- a/apps/api/models.py
+++ b/apps/api/models.py
@@ -2,6 +2,7 @@
 # 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
 
@@ -10,18 +11,27 @@ from catalogue.models import Book, Tag
 
 class Deleted(models.Model):
     object_id = models.IntegerField()
-    type = models.CharField(max_length="50", 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)
 pre_delete.connect(_pre_delete_handler)