facebook_pixel.module in Facebook Pixel 8

Contains facebook_pixel.module..

File

facebook_pixel.module

<?php

/**
 * @file
 * Contains facebook_pixel.module..
 */
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Entity\Display\EntityViewDisplayInterface;
use Drupal\Component\Utility\Xss;

/**
 * Implements hook_help().
 */
function facebook_pixel_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {

    // Main module help for the facebook_pixel module.
    case 'help.page.facebook_pixel':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('Facebook Pixel') . '</p>';
      return $output;
    default:
  }
}

/**
 * Implements hook_page_attachments().
 */
function facebook_pixel_page_attachments(array &$page) {
  $config = \Drupal::config('facebook_pixel.facebookpixelconfig');
  $id = $config
    ->get('facebook_id');

  // Facebook Pixel must be configured to proceed.
  if (empty($id)) {
    return;
  }
  $jsString = Xss::filter(json_encode($id));
  $script = '!function(f,b,e,v,n,t,s){if(f.fbq)return;n=f.fbq=function(){n.callMethod? n.callMethod.apply(n,arguments):n.queue.push(arguments)};if(!f._fbq)f._fbq=n;n.push=n;n.loaded=!0;n.version=\'2.0\';n.queue=[];t=b.createElement(e);t.async=!0;t.src=v;s=b.getElementsByTagName(e)[0];s.parentNode.insertBefore(t,s)}(window,document,\'script\',\'https://connect.facebook.net/en_US/fbevents.js\');fbq(\'init\', ' . $jsString . ');fbq(\'track\', "PageView");';

  // Add registered events to the script execution.

  /** @var \Drupal\facebook_pixel\FacebookEvent $facebook_event */
  $facebook_event = \Drupal::service('facebook_pixel.facebook_event');
  foreach ($facebook_event
    ->getEvents() as $event) {
    $script .= 'fbq("track", "' . Xss::filter($event['event']) . '", ' . Xss::filter(json_encode($event['data'])) . ');';
  }
  $page['#attached']['html_head'][] = [
    [
      '#tag' => 'script',
      '#value' => $script,
    ],
    'facebook_tracking_pixel_script',
  ];
}

/**
 * Implements hook_page_top().
 */
function facebook_pixel_page_top(array &$page_bottom) {
  $config = \Drupal::config('facebook_pixel.facebookpixelconfig');
  $id = $config
    ->get('facebook_id');
  $urlParameter = Xss::filter(urlencode($id));
  $noscript = '<img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=' . $urlParameter . '&ev=PageView&noscript=1" />';
  $page_bottom[] = [
    '#markup' => '<noscript>' . $noscript . '</noscript>',
    '#allowed_tags' => [
      'noscript',
      'img',
    ],
  ];
}

/**
 * Implements hook_entity_insert().
 */
function facebook_pixel_entity_insert(EntityInterface $entity) {
  $facebook_event = \Drupal::service('facebook_pixel.facebook_event');

  // Register new user event.
  if ($entity
    ->getEntityType()
    ->id() == 'user') {

    /** @var \Drupal\facebook_pixel\FacebookEvent $facebook_event */
    $facebook_event
      ->addEvent('CompleteRegistration', $entity
      ->id());
  }
}

/**
 * Implements hook_entity_view().
 */
function facebook_pixel_entity_view(array &$build, EntityInterface $entity, EntityViewDisplayInterface $display, $view_mode) {
  $facebook_event = \Drupal::service('facebook_pixel.facebook_event');
  if ($entity
    ->getEntityType()
    ->id() == 'node' && in_array($view_mode, [
    'default',
    'full',
  ])) {

    /** @var \Drupal\node\NodeInterface $entity */
    $data = [
      'content_name' => $entity
        ->getTitle(),
      'content_type' => $entity
        ->getType(),
      'content_ids' => [
        $entity
          ->id(),
      ],
    ];
    $facebook_event
      ->addEvent('ViewContent', $data);
  }
}

Functions

Name	Description
facebook_pixel_entity_insert	Implements hook_entity_insert().
facebook_pixel_entity_view	Implements hook_entity_view().
facebook_pixel_help	Implements hook_help().
facebook_pixel_page_attachments	Implements hook_page_attachments().
facebook_pixel_page_top	Implements hook_page_top().