[#1251] Delete ResourceViews when purging their Resource

ckan/migration/versions/073_update_resource_view_resource_id_constraint.py

@@ -0,0 +1,10 @@
+def upgrade(migrate_engine):
+    migrate_engine.execute('''
+        ALTER TABLE resource_view
+            DROP CONSTRAINT resource_view_resource_id_fkey;
+
+        ALTER TABLE resource_view
+            ADD CONSTRAINT resource_view_resource_id_fkey
+            FOREIGN KEY (resource_id) REFERENCES resource(id)
+            ON UPDATE CASCADE ON DELETE CASCADE;
+    ''')

ckan/new_tests/model/test_resource_view.py

@@ -49,3 +49,12 @@ def test_delete_view_type_doesnt_commit(self):
 
         result = ResourceView.get_count_not_in_view_types(['image'])
         assert_equals(result, [('webpage', 1)])
+
+    def test_purging_resource_removes_its_resource_views(self):
+        resource_view_dict = factories.ResourceView()
+        resource = model.Resource.get(resource_view_dict['resource_id'])
+
+        resource.purge()
+        model.repo.commit_and_remove()
+
+        assert_equals(ResourceView.get(resource_view_dict['id']), None)