Notify controller of pressed button

How do I notify the controller when the delete button is pressed?

MyController.php

public function actionUpdate($id)
{
    isset($_POST['del'])
    {
       // delete user.
    }
}

      

        
        
        
      

    

MyView.php

<?php
echo '<button type="button" class="btn btn-danger" name="deleteButton">Delete User</button>'; 
?>

      

        
        
        
      

    

This is what I tried:

    $('.deleteButton').click(function()
    {
        var clickBtnValue = $(this).val();
        var ajaxurl = Yii::app()->basePath . '/controllers/MyController.php';

        del =  {'action': clickBtnValue};
        $.post(ajaxurl, del, function (response) 
        {

            alert("action performed successfully");
        });
    });

      

        
        
        
      

    

But I can't get a notification on the controller that the button is clicked.