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Developer: format submitted data

As a developer you can add formats for formatting submitted data. This extension comes with two formats plain and html table. The formatted data can be used to set a description of an activity. Or to send out an e-mail when data has been submitted.

Create Event Subscriber

Add a file in your extension under Civi\MyExt\EventListener and call it FormProcessorFormatSubscriber

Below an example of how the file looks for the defaults formats

namespace Civi\FormProcessor\EventListener;

use Civi\FormProcessor\Event\FormatDatabagEvent;
use Civi\FormProcessor\Event\FormatTypeEvent;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use CRM_FormProcessor_ExtensionUtil as E;

class FormatSubscriber implements EventSubscriberInterface {

   * Returns an array of event names this subscriber wants to listen to.
   * The array keys are event names and the value can be:
   *  * The method name to call (priority defaults to 0)
   *  * An array composed of the method name to call and the priority
   *  * An array of arrays composed of the method names to call and respective
   *    priorities, or 0 if unset
   * For instance:
   *  * ['eventName' => 'methodName']
   *  * ['eventName' => ['methodName', $priority]]
   *  * ['eventName' => [['methodName1', $priority], ['methodName2']]]
   * @return array The event names to listen to
  public static function getSubscribedEvents() {
    return [
      FormatTypeEvent::NAME => 'onFormatType',
      FormatDatabagEvent::NAME => 'onFormatDatabag',

   * @param \Civi\FormProcessor\Event\FormatTypeEvent $event
   * @return void
  public function onFormatType(FormatTypeEvent $event) {
    $event->formats = [
      'plain' => E::ts('Plain Text with submitted data'),
      'html_table' => E::ts('HTML Table with submitted data'),

  public function onFormatDatabag(FormatDatabagEvent $event) {
    $htmlTable = '<table>';
    $plain = '';
    foreach ($event->databag->getAllInputs() as $input) {
      $htmlTable .= '<tr><th>' . $input->title . '</th><td>' . $event->databag->getInputData($input) . '</td></tr>';
      $plain .=  $input->title . ': ' . $event->databag->getInputData($input) . "\r\n";
    $htmlTable .= '</table>';
    $event->databag->setFormattedDatabag('plain', $plain);
    $event->databag->setFormattedDatabag('html_table', $htmlTable);


The function getSubscribedEvents gives meta information on to what events this class is listening.

The function onFormatType makes the format types known to the form processor, in this example it is Plain Text and HTML Table.

The function onFormatDatabag formats the data and sets it in the databag.

Register the event subscriber

In the hook_civicrm_container you have to add this subscriber.

Below an example:

use \Symfony\Component\DependencyInjection\ContainerBuilder;
use \Symfony\Component\DependencyInjection\Definition;

 * Implements hook_civicrm_container()
 * @link
function hook_civicrm_container(ContainerBuilder $container) {
  $formatSubscriberEventDefinition = new Definition('Civi\FormProcessor\EventListener\FormatSubscriber')
    ->addMethodCall('addSubscriber', [$formatSubscriberEventDefinition]);