title: Inaccessible value for foreign key in easyadmin listing (Symfony 2.8)
body: <p>I have used easyadmin bundle in my Symfony application. I have user and role entity. I have used role id as an foreign key for user. I am showing user listing in admin section using easy admin.</p>
  
  <p>But for role it show me "Inaccessible" as an value in listing.</p>
  
  <p>If anyone knows how to show actual value for instead of "Inaccessible" then please help me.</p>
  
  <p>Thank you.</p>