How to use Ext JS for role based application

Question

I am planning to use Ext JS for a large application. The application\'s features are role based. When user login, they only see menu and screen features related to them. My

Answer 1

Don't bring functionality to the client that the user is not allowed to see. You can load js files dynamically, but your app server must enforce your rules; no role, no JS.

  var jsFile = document.createElement('script');
  jsFile.setAttribute( "type", "text/javascript" );
  jsFile.setAttribute( "src", 'someFileName.js' );
  document.getElementsByTagName("head")[0].appendChild(jsFile);

You can use an LDAP or a simpler server-side solution, but (again) don't serve JS to users who have no right to it. On the client, check for the existence of a class (during development create one class per JS file), and do not attempt to create an object when its class is not loaded.