title: Facebook tab page load app doesn't pass parameter
body: <p>I have an app in a facebook page tab that show some informations and this information must change for every user (ID_USER). I don't know how to load the correct data in the facebook app tab page. My app is a Django app. I've done this step:</p>
  
  <p>1) create an app in my developers account (a page tab application) with this url <a href="https://www.exemple.com/ID_USER" rel="nofollow">https://www.exemple.com/ID_USER</a>.</p>
  
  <p>2) load the url <a href="https://www.facebook.com/dialog/pagetab?app_id=MY_APP_ID&amp;redirect_uri=www.exemple.com/ID_USER" rel="nofollow">https://www.facebook.com/dialog/pagetab?app_id=MY_APP_ID&amp;redirect_uri=www.exemple.com/ID_USER</a></p>
  
  <p>3) Select in the window the page to install the app</p>
  
  <p>4) I go to the page and I found the app. </p>
  
  <p>The problem is that the app is only for a user and I would like to load the right data for every facebook page the app is installed.  </p>
  
  <p>I've read about signed_request and app_data but I don't understand how to set app_data. Canyou help me please?  </p>
  
  <p><strong>* EDIT *</strong></p>
  
  <p>The problem seems to be the django internationalization redirect from </p>
  
  <ul>
  <li><a href="https://www.example.com/ID_USER" rel="nofollow">https://www.example.com/ID_USER</a>
  to</li>
  <li><a href="https://www.example.com/en/ID_USER" rel="nofollow">https://www.example.com/en/ID_USER</a></li>
  </ul>
  
  <p>in my network console I see </p>
  
  <p>302 <a href="https://www.example.com/ID_USER" rel="nofollow">https://www.example.com/ID_USER</a> (with 'signed_request')
  200 <a href="https://www.example.com/en/ID_USER" rel="nofollow">https://www.example.com/en/ID_USER</a> (without 'signed_request')</p>
  
  <p>How can I solve this issue? </p>