Opencart - Sending Data Via Ajax In Admin?

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I have a lot of forms that need to be processed. I used jQuery to collect all the data, but I don't know how to send it to PHP and get a response back.

 

 

In .tpl my code is this:

function submitSettings() {
   $('.forms').each(function() {
       $.post('<?php echo $action; ?>', $(this).serialize());
   });

in controller on php side I have:

 if (($this->request->server['REQUEST_METHOD'] == 'POST') && $this->validate())
           var_dump($this->request->post);

 

It looks to me like data is being sent because as soon as I refresh the page I get logged out saying tocken is no longer valid, yet $this->request->post isn't being dumped

Can anyone help?