title: AngularJS - sending an event from one module to another; does it really work?
body: <p>I need a solution for sending an event from one angular module to another.
  I found this thread here which describes the solution exactly how I would like it:
  <a href="https://stackoverflow.com/questions/34161728/how-to-send-message-from-one-module-to-another/34161821#34161821">How to send message from one module to another?</a> by <a href="https://stackoverflow.com/users/33082/michael-g">Michael G.</a></p>
  
  <p>However, after extensive prototyping I'm not sure this really works.</p>
  
  <p>In a nutshell, it shows a service which contains 2 methods: one for sending an event (called by the sender), another on which the receiver can register with a callback which will be triggered on change of the event.</p>
  
  <p>Can anyone provide a working example?</p>