title: Yii2 and Postman - empty POST
body: <p>Again yii2, again problem.
  I need yii/rest/Controller, not yii/rest/ActiveController
  I have contorller with method and config:
  <a href="https://i.stack.imgur.com/2aYFf.jpg" rel="nofollow noreferrer">my files</a></p>
  
  <p>my Postman:
  <a href="https://i.stack.imgur.com/pbrcE.jpg" rel="nofollow noreferrer">my postman</a></p>
  
  <p>Always have empty POST array. Where is problem? If send as form-data, all is well.</p>