title: Symfony EasyAdminBundle: Filter entities in assotiation field
body: <p>I have a form with assotation field type (list of related entities).</p>
  
  <p>What I've been trying to achieve is to filter this list on "newAction" form (create new entity).</p>
  
  <p>For example, following screen below: </p>
  
  <ol>
  <li>There is a Survey entity with field "User".</li>
  <li>There is Department entity with field "Survey" (@ORM\ManyToOne) where the User choose a survey.</li>
  </ol>
  
  <p>You can see two available surveys but I want to display only the first one, because its User field value is the same as current  user.</p>
  
  <p><a href="https://i.stack.imgur.com/36qbo.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/36qbo.jpg" alt="enter image description here"></a></p>
  
  <p>It is confusing, because I can't find values passed to the Survey field when I debuging.</p>