title: Laravel validation of pivot table value
body: <p>I have a pivot table in laravel that has some extra data.</p>
  
  <p>I've been looking around and could not find a mechanism for validating that data, short of writing one myself. But if there's an existing one there already, that would be reinventing the wheel.</p>
  
  <p>Any idea how I could apply the laravel validation to the pivot table as well?</p>
  
  <p>Thanks!</p>