woocommerce ajax in the front-end not working - php

Question

I try to use woocommerce Ajax, I find a lot example online, none of them works.
could someone take a look on my code, where's the problem.
add_action( 'wp_ajax_my_action', 'mmy_real' );
add_action( 'wp_ajax_nopriv_my_action', 'mmy_real' );
function mmy_real(){
check_ajax_referer( 'my-special-string', 'security' );
$make = $_SESSION['vpf']['search']['make'];
$model = $_SESSION['vpf']['search']['model'];
$year = $_SESSION['vpf']['search']['year_id'];
die();
}
function mmy_script(){
wp_register_script( "hover_script", get_template_directory_uri() . '/js/mmy.js', array('jquery'), '1.0.0', true );
wp_localize_script( 'hover_script', 'mmy', array( 'ajaxurl' => admin_url( 'admin-ajax.php' ),'security' => wp_create_nonce( 'my-special-string' )));
wp_enqueue_script( 'jquery' );
wp_enqueue_script( 'hover_script' );
}
add_action('init', 'mmy_script');
jQuery(document).ready(function() {
jQuery.ajax({
type: "post",
url : mmy.ajaxurl,
data:{
action:"mmy_real",
make: "make",
model: "model",
year: "year"
},
success: function( response ) {
alert("success");
}
});
});
I test in localhost. It won't alert success messagebox, if I change url to localhost/fhgroupauto/test.php . it will alert success .
I don't know what do i miss for this .
Thanks

Answer 1

The value of "action" is wrong.
You add the hook "wp_ajax_my_action" and "wp_ajax_nopriv_my_action", so the string after "wp_ajax_" and "wp_ajax_nopriv_" is the parameter for the "action" key.
Which means your data array for the ajax call should look like this:
data:{
action: "my_action",
make: "make",
model: "model",
year: "year"
},
For more information see the Wordpress documentation - AJAX in Plugins