Dodanie szkieletu dokumentacji.

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

diff --git a/apps/newtagging/models.py b/apps/newtagging/models.py
index e988b6c..d3a386b 100644 (file)
--- a/apps/newtagging/models.py
+++ b/apps/newtagging/models.py
@@ -62,6 +62,14 @@ class TagManager(models.Manager):
             if tag not in current_tags:
                 self.intermediary_table_model._default_manager.create(tag=tag, content_object=obj)
     
+    def remove_tag(self, obj, tag):
+        """
+        Remove tag from an object.
+        """
+        content_type = ContentType.objects.get_for_model(obj)
+        self.intermediary_table_model._default_manager.filter(content_type__pk=content_type.pk,
+            object_id=obj.pk, tag=tag).delete()
+
     def get_for_object(self, obj):
         """
         Create a queryset matching all tags associated with the given
@@ -225,7 +233,7 @@ class TagManager(models.Manager):
         WHERE %(tagged_item)s.content_type_id = %(content_type_id)s
         AND %(tagged_item)s.object_id IN
         (
-            SELECT temporary.object_id 
+            SELECT *
             FROM (
                 SELECT %(tagged_item)s.object_id
                 FROM %(tagged_item)s, %(tag)s
@@ -236,6 +244,7 @@ class TagManager(models.Manager):
                 HAVING COUNT(%(tagged_item)s.object_id) = %(tag_count)s
             ) AS temporary
         )
+        AND %(tag)s.id NOT IN (%(tag_id_placeholders)s)
         %(extra_where)s
         GROUP BY %(tag_columns)s
         %(min_count_sql)s