WordPress ajax function in child class

Question

If i have this classes

class something {
    public function __construct() {
        add_action('wp_ajax_ajax_func', array( $this, 'ajax_func' ) );
    }

    public function ajax_func() {

    }  

}
class stchild extends something {

    public function __construct() {

    }

    public function ajax_func() {
        echo "Test child1";
    }  
}

How to call only ajax_func function in stchild class by ajax ?
when i try this code

jQuery.ajax({
url: 'admin-ajax.php',
data: {action : 'ajax_func'},
success: function(data){
    console.log(data);
}
});

it get all functions which called ajax_func, I want to define specific class to get this function from it. Note that there is many child classes from something class and all are activated.

Answer 1

You could wrap it inside an action function.

add_action( 'wp_ajax_do_something', 'my_do_something_callback' );

function my_do_something_callback() {
    $object = new stchild;
    $object->ajax_func();
    die();
}

JS:

jQuery.ajax({
    url: ajaxurl, // Use this pre-defined variable,
                  // instead of explicitly passing 'admin-ajax.php',
    data: { action : 'do_something' },
    success: function(data){
        console.log(data);
    }
});