title: How to redirect users based on what page they came from?
body: <p>I have a page (Controller Action that renders a View) that a user could navigate to from 3 different pages.  Basically, a user gets there, does a few selections and clicks on Save button.  At this point, I need to redirect the user to where he came from.</p>
  
  <p>I'm wondering, what's the best practice to do that?</p>
  
  <p>I know, for example, I could look in Request, figure out where he came from, then redirect back to there...  But that doesn't look like the ideal approach to me.</p>