class ApiController in Facebook Instant Articles 3.x

Controller to handle Facebook login callback.

Hierarchy

• class \Drupal\Core\Controller\ControllerBase implements ContainerInjectionInterface uses LoggerChannelTrait, MessengerTrait, RedirectDestinationTrait, StringTranslationTrait
  • class \Drupal\fb_instant_articles\Controller\ApiController

File

src/Controller/ApiController.php, line 17

Namespace

Drupal\fb_instant_articles\Controller

class ApiController extends ControllerBase {

  /**
   * Config factory service.
   *
   * @var \Drupal\Core\Config\ConfigFactoryInterface
   */
  protected $configFactory;

  /**
   * Creates a new \Drupal\fb_instant_articles\Controller\ApiController.
   *
   * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
   *   Config factory service.
   */
  public function __construct(ConfigFactoryInterface $config_factory) {
    $this->configFactory = $config_factory;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('config.factory'));
  }

  /**
   * Handle Facebook login callback.
   */
  public function facebookLogin() {
    $config = $this->configFactory
      ->getEditable('fb_instant_articles.settings');
    $fb = new Facebook([
      'app_id' => $config
        ->get('app_id'),
      'app_secret' => $config
        ->get('app_secret'),
      'default_graph_version' => 'v2.5',
    ]);
    $helper = $fb
      ->getRedirectLoginHelper();

    // Grab the user access token based on callback response and report back an
    // error if we weren't able to get one.
    try {
      $access_token = $helper
        ->getAccessToken();
      if ($access_token == NULL) {
        $error_msg = $this
          ->t('We failed to authenticate your Facebook account with this module. Please try again.');
        $this
          ->messenger()
          ->addError($error_msg);
      }
      else {

        // Confirm that the person granted the necessary permissions before
        // proceeding.
        $permissions = $fb
          ->get('/me/permissions', $access_token)
          ->getGraphEdge();
        $rejected_permissions = [];
        foreach ($permissions as $permission) {
          if ($permission
            ->getField('status') != 'granted') {
            $rejected_permissions[] = $permission
              ->getField('permission');
          }
        }
        if (!empty($rejected_permissions)) {
          $error_msg = $this
            ->t('You did not grant the following required permissions in the Facebook authentication process: @permissions. Please try again.', [
            '@permissions' => implode(', ', $rejected_permissions),
          ]);
          $this
            ->messenger()
            ->addError($error_msg);
        }
        else {

          // Store this user access token to the database.
          $config
            ->set('access_token', $access_token
            ->getValue())
            ->save();
          $this
            ->messenger()
            ->addStatus('Facebook authentication was successful. Access token obtained.');
        }
      }
    } catch (FacebookResponseException $e) {
      $error_msg = $this
        ->t('We received the following error while attempting to authenticate your Facebook account: @error', [
        '@error' => $e
          ->getMessage(),
      ]);
      $this
        ->messenger()
        ->addError($error_msg);
    } catch (FacebookSDKException $e) {
      $error_msg = $this
        ->t('We received the following error while attempting to authenticate your Facebook account: @error', [
        '@error' => $e
          ->getMessage(),
      ]);
      $this
        ->messenger()
        ->addError($error_msg);
    }
    return new RedirectResponse(Url::fromRoute('fb_instant_articles.api_settings_form')
      ->toString());
  }

}

Members

Name	Modifiers	Type	Description	Overrides
ApiController::$configFactory	protected	property	Config factory service. Overrides ControllerBase::$configFactory
ApiController::create	public static	function	Instantiates a new instance of this class. Overrides ControllerBase::create
ApiController::facebookLogin	public	function	Handle Facebook login callback.
ApiController::__construct	public	function	Creates a new \Drupal\fb_instant_articles\Controller\ApiController.
ControllerBase::$currentUser	protected	property	The current user service.	1
ControllerBase::$entityFormBuilder	protected	property	The entity form builder.
ControllerBase::$entityTypeManager	protected	property	The entity type manager.
ControllerBase::$formBuilder	protected	property	The form builder.	2
ControllerBase::$keyValue	protected	property	The key-value storage.	1
ControllerBase::$languageManager	protected	property	The language manager.	1
ControllerBase::$moduleHandler	protected	property	The module handler.	2
ControllerBase::$stateService	protected	property	The state service.
ControllerBase::cache	protected	function	Returns the requested cache bin.
ControllerBase::config	protected	function	Retrieves a configuration object.
ControllerBase::container	private	function	Returns the service container.
ControllerBase::currentUser	protected	function	Returns the current user.	1
ControllerBase::entityFormBuilder	protected	function	Retrieves the entity form builder.
ControllerBase::entityTypeManager	protected	function	Retrieves the entity type manager.
ControllerBase::formBuilder	protected	function	Returns the form builder service.	2
ControllerBase::keyValue	protected	function	Returns a key/value storage collection.	1
ControllerBase::languageManager	protected	function	Returns the language manager service.	1
ControllerBase::moduleHandler	protected	function	Returns the module handler.	2
ControllerBase::redirect	protected	function	Returns a redirect response object for the specified route.
ControllerBase::state	protected	function	Returns the state storage service.
LoggerChannelTrait::$loggerFactory	protected	property	The logger channel factory service.
LoggerChannelTrait::getLogger	protected	function	Gets the logger for a specific channel.
LoggerChannelTrait::setLoggerFactory	public	function	Injects the logger channel factory.
MessengerTrait::$messenger	protected	property	The messenger.	27
MessengerTrait::messenger	public	function	Gets the messenger.	27
MessengerTrait::setMessenger	public	function	Sets the messenger.
RedirectDestinationTrait::$redirectDestination	protected	property	The redirect destination service.	1
RedirectDestinationTrait::getDestinationArray	protected	function	Prepares a 'destination' URL query parameter for use with \Drupal\Core\Url.
RedirectDestinationTrait::getRedirectDestination	protected	function	Returns the redirect destination service.
RedirectDestinationTrait::setRedirectDestination	public	function	Sets the redirect destination service.
StringTranslationTrait::$stringTranslation	protected	property	The string translation service.	4
StringTranslationTrait::formatPlural	protected	function	Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals	protected	function	Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation	protected	function	Gets the string translation service.
StringTranslationTrait::setStringTranslation	public	function	Sets the string translation service to use.	2
StringTranslationTrait::t	protected	function	Translates a string to the current language or to a given language.