Contao 2.x Hooks Tutorial (processFormData)

Contao Hooks are functions that get triggered on certain events. For a list of available hooks take a look at the Contao Documentation.

Here is a quick tutorial on how to setup a hook for processing form data entered by members in your website.

Contao 3 – redirect to a frontend url from page alias

<?php

class MyModule extends \Module {


    protected function compile() {

            $page_alias = 'my-page-alias';
            $arrPage = \PageModel::findPublishedByIdOrAlias($page_alias)->current()->row();
          
            $strUrl = $this->generateFrontendUrl($arrPage, '/additionalquerystring/vars');

            $this->redirect($strUrl);



    }

}

Contao 3 – Generate a form inside a custom template

 

<?php

/**
  * STEP #1 (just in case you want to get the form by its alias)
  * get the form id from its alias
  * if you have the form id you can skip to step #2
*/
$objModel = \FormModel::findByAlias($form_alias);
$form_id  = $objModel->id;


/**
 * STEP #2
 * generate the configuration object
**/

$objContent = new stdClass();
$objContent->form = $form_id;

/**
 * STEP #3
 * generate the form object
**/
$objForm = new \Form($objContent);
?>


<?php
/**
 * STEP #4
 * display the Form
**/
?>
<?php echo $objForm->generate(); ?>