title: Displaying messages through django signals
body: <p>I'm looking to make a django app that uses signals. (using django signals) There I would like to run some functions, and based on which output they give, send a message within the webpage. so for example, if the function fails i want to send a message saying it failed.</p>
  <p>this is pretty  much want i would want</p>
  <pre><code>in signals.py -----
  def handle_event(request, *args, **kwargs):
      try: 
      --unimportant--
      except: 
         messages.error(request, 'error message') 
  post_save.connect(handle_event, sender=Event)
  </code></pre>
  <p>how would i go about doing this?</p>