JQuery post parameters do not get to my controller

You're mixing a query string (get) with post. Not sure if that will work but seems odd. How do you know it doesn't reach the controller. You don't do anything in the success event of the ajax call, like display what is returned. It just goes into a black hole.

Just for giggles, try:

PHP Code:

$.post(
  "http://localhost/index.php/user_filters/test", //url to call
  { name: "aa" }, //POST data to send
  function(data) { //callback to output data received back from controller
    alert(data); //just alert it to see if it worked
  }
);