Abstract the way tag documents are retrieved

mayan/apps/tags/__init__.py

@@ -61,7 +61,11 @@ class_permissions(Tag, [
     PERMISSION_TAG_VIEW,
 ])
 
+def tag_documents(self):
+    return Document.objects.filter(tags__in=[self])
+
 Document.add_to_class('tags', TaggableManager())
+Tag.add_to_class('documents', property(tag_documents))
 
 endpoint = APIEndPoint('tags')
 endpoint.register_urls(api_urls)

mayan/apps/tags/views.py

@@ -236,7 +236,7 @@ def tag_tagged_item_list(request, tag_id):
 
     return document_list(
         request,
-        object_list=Document.objects.filter(tags__in=[tag]),
+        object_list=tag.documents.all(),
         title=_('documents with the tag "%s"') % tag,
         extra_context={
             'object': tag,