Reenable adding/editing related topics for docs, notes

Also fix bug when editing documents where the "zotero_link" attribute
was not being set properly

Author: ptgolden

editorsnotes/admin_custom/forms/documents.py

@@ -40,9 +40,10 @@ def save_zotero_data(self):
         elif self.changed_data is not None and 'zotero_string' in self.changed_data:
             document.zotero_data = self.cleaned_data['zotero_string']
             document.save()
-            link, created = ZoteroLink.objects.get_or_create(zotero_item=document)
-            if not created:
-                link.save()
+            if not document.zotero_link:
+                ZoteroLink.objects.create(zotero_item=document)
+            else:
+                document.zotero_link.save()
         return document
 
 class DocumentLinkForm(ModelForm):

editorsnotes/admin_custom/views/documents.py

@@ -14,7 +14,7 @@ class DocumentAdminView(BaseAdminView):
     model = Document
     form_class = forms.DocumentForm
     formset_classes = (
-        # forms.TopicAssignmentFormset,
+        forms.TopicAssignmentFormset,
         forms.DocumentLinkFormset,
         forms.ScanFormset
     )

editorsnotes/admin_custom/views/notes.py

@@ -18,7 +18,7 @@ class NoteAdminView(BaseAdminView):
     model = Note
     form_class = forms.NoteForm
     formset_classes = (
-        # forms.TopicAssignmentFormset,
+        forms.common.TopicAssignmentFormset,
     )
     template_name = 'note_admin.html'
     def get_object(self, note_id=None):