Prestashop get ajax response showing as null - php

Question

In prestashop I am doing a small module. In that module in smarty I have a form. I want to submit those values using ajax. So for that I have made my ajax as $.post like this
jQuery(document).ready(function($) {
$('.module-form').submit(function(e) {
e.preventDefault();
msg = '';
$form = $(this);
$.post(
baseDir + "modules/mymodule/mymodule.php",
{ name: 'myname', action: 'form_subscribe' },
function(data) {
var response = jQuery.parseJSON(data);
console.log(response);
}
);
return false;
});
});
In the module file (mymodule.php) I have my code like this
class MyModule extends Module {
public function __construct() {
-----
----
--
}
function form_subscribe() {
$name = $_POST['name'];
echo json_encode($name);
exit;
}
}
But when I am doing submit the form it is showing the response as null. Can someone tell me how to solve this issue? Any help and suggestions will be really appreciable. Thanks.

Answer 1

You can't access a class or a method directly like you are trying to do.
To perform your action you have to first instantiate the Class and then call the function.
Particularly in a prestashop environment, follow this step:
Create another php page inside your module folder, lets call the page mymodule_ajax.php.
Then inside of it retrieve the configuration, the initialization of the prestashop context and then instantiate the module and perform the call management.
mymodule_ajax.php:
include(dirname(__FILE__). '/../../config/config.inc.php');
include(dirname(__FILE__). '/../../init.php');
/* will include module file */
include(dirname(__FILE__). '/mymodule.php');
/* will instantiate the class MyModule so that you can access the method */
$my_mod = new MyModule;
/* using Prestashop Tools Class we ensure that the call is made from the form with action "form_subscribe */
if(Tools::isSubmit('action') && Tools::getValue('action') == 'form_subscribe')
$my_mod->form_subscribe(); //call the method
Then change your ajax code to point that url so:
$.post(
baseDir + "modules/mymodule/mymodule_ajax.php", //new url
{ name: 'myname', action: 'form_subscribe' }
You should now retrieve the json value in your console.log.