title: override translation fallback symfony 2
body: <p>I have a symfony 2 project that supports 2 languages in both the backend and the front end. And I have enabled translation fallback in the configuration to allow the admin to view all the database records regardless of what language he chooses to use in the backend. However, for the front end of the website I wish to disable the fallback. How can I override the translation fallback from true to false in only the controllers I want?</p>
  
  <p>I am using Gedmo translatable in my entities to translate specific columns.</p>
  
  <p>Thank you. </p>