How to call overrider controller from html form - php

Question

Like in topic. How can I call the overrider controller from html form like this below:
<form method="post" action="index.php?controller=CmsController">
<input name="test" type="text" />
<input name="action" value="getStatus" type="hidden" />
<input value="test" type="submit" />
</form>
This code above I have in my tpl file.
File: /override/controllers/front/CmsController.php
---edit
{$link->getModuleLink('blockcms', 'CmsController')|escape:'html'}
doesn’t work.
---edit
public function initContent() {
parent::initContent();
if (Tools::getValue('action') && Tools::getValue('action') == 'getStatus') {
$id = $this->getIdByCode(Tools::getValue('voucher'));
$obj = new CartRuleCore($id);
$context = Context::getContext();
$response = $obj->checkValidity($context);
if ($response == NULL or $response == 'Koszyk jest pusty'){
$response = 'Kod ';
}
}
if (isset($this->cms)) {
$this->cms->content = str_replace("<!--response-->", $response, "{$this->cms->content}");
}
$this->setTemplate(_PS_THEME_DIR_ . 'cms.tpl');
This is part of initContent function in \override\controllers\front\CmsController.php And in my file tpl I have
<form method="post" action="index.php?controller=CmsController">
<input name="test" type="text" />
<input name="action" value="getStatus" type="hidden" />
<input value="test" type="submit" />