title: Symfony2 - Create a Doctrine filter to select current user data
body: <p>I'm building a Saas / Multitenant application using Symfony 2. I've created a Doctrine event-subscriber to add and update the owner of a row, the user who created it, the user who modified it, timestamps and so.</p>
  
  <p>And now I need to implement some kind of filter so when a user is logged in, he only can see data from his company. My first though was using a Doctrine preLoad event, but this event doesn't exist... As far as I know, I must use Doctrine filters, isn't it? If so, how can this filter access user data to read the company id? Must I inject it using the Dependency Injection? Is there any standard way to accomplish my goal?</p>
  
  <p><strong>UPDATE</strong>
  What I'm looking for is to create some kind of Doctrine plugin/hook so everytime I call any function that fetch data from the database (find, findOneBy, etc), and the entity I'm fetching implements a particular interface, an extra 'AND company_id=:id' SQL sequence is added to the generated query, so neither the controller or the model receives data from other companies.</p>