title: best way for bulk insertion validation laravel 5
body: <p>i have problem validating a bulk insertion in laravel 5 the scenario that i have is as following :</p>
  
  <p>a model called department that has many employees when i save a department it may have several employee belongs to it , I'm currently loops the entire employee list and validate each one before insertion is there a way in laravel 5 validator  that do this out of the box. </p>