title: How to get a return response from signals in Django
body: <p>I'm using post_init and post_save signals to watch a single table column, then update other tables when the watched column is changed in the CMS. This works great, but the response in the CMS is still "1 blah was changed successfully." </p>
  
  <p>Instead, I need to display the real number of items that were updated inside the signal. I'm at a loss -- can't find this anywhere and I'm not even sure where to look. Suggestions on the proper technique, or pointer to a doc that I've missed?</p>