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class LikeDislikeController in Like/Dislike 8

Class LikeDislikeController.

@package Drupal\like_dislike\Controller

Hierarchy

Expanded class hierarchy of LikeDislikeController

File

src/Controller/LikeDislikeController.php, line 22

Namespace

Drupal\like_dislike\Controller
View source 
class LikeDislikeController extends ControllerBase {

  /**
   * The request stack.
   *
   * @var \Symfony\Component\HttpFoundation\RequestStack
   */
  protected $requestStack;

  /**
   * The entity type manager.
   *
   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
   */
  protected $entityTypeManager;

  /**
   * The current user service.
   *
   * @var \Drupal\Core\Session\AccountInterface
   */
  protected $currentUser;

  /**
   * The renderer.
   *
   * @var \Drupal\Core\Render\RendererInterface
   */
  protected $renderer;

  /**
   * Constructs an LinkClickCountController object.
   *
   * @param \Symfony\Component\HttpFoundation\RequestStack $request
   *   The request stack.
   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
   *   The entity type manager.
   * @param \Drupal\Core\Session\AccountInterface $account
   *   The current user.
   * @param \Drupal\Core\Render\RendererInterface
   *   The renderer.
   */
  public function __construct(RequestStack $request, EntityTypeManagerInterface $entity_type_manager, AccountInterface $account, RendererInterface $renderer) {
    $this->requestStack = $request;
    $this->entityTypeManager = $entity_type_manager;
    $this->currentUser = $account;
    $this->renderer = $renderer;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('request_stack'), $container
      ->get('entity_type.manager'), $container
      ->get('current_user'), $container
      ->get('renderer'));
  }

  /**
   * Like or Dislike handler.
   *
   * @param string $clicked
   *   Status of the click link.
   * @param string $data
   *   Data passed from the formatter.
   *
   * @return AjaxResponse|string
   *   Response count for the like/dislike.
   */
  public function handler($clicked, $data) {
    $return = '';
    $response = new AjaxResponse();

    // Decode the url data
    $decode_data = json_decode(base64_decode($data));

    // Load the entity content.
    $entity_data = $this->entityTypeManager
      ->getStorage($decode_data->entity_type)
      ->load($decode_data->entity_id);
    $field_name = $decode_data->field_name;

    // Get the users who already clicked on this particular content.
    $users = json_decode($entity_data->{$field_name}->clicked_by);
    if ($users == NULL) {
      $users = new \stdClass();
      $users->default = 'default';
    }
    $user = $this->currentUser
      ->id();

    // If user is ananomous, ask him to register/login.
    if ($user == 0) {
      $destination = $this->requestStack
        ->getCurrentRequest()
        ->get('like-dislike-redirect');
      user_cookie_save([
        'destination' => $destination,
      ]);
      $user_login_register = $this
        ->like_dislike_login_register();
      $dialog_library['#attached']['library'][] = 'core/drupal.dialog.ajax';
      $response
        ->setAttachments($dialog_library['#attached']);
      return $response
        ->addCommand(new OpenModalDialogCommand('Like/Dislike', $user_login_register));
    }

    // Update content, based on like/dislike.
    $already_clicked = key_exists($user, array_keys((array) $users));
    if ($clicked == 'like') {
      if (!$already_clicked) {
        $entity_data->{$field_name}->likes++;
        $users->{$user} = 'like';
      }
      else {
        return $this
          ->like_dislike_status($response, $decode_data->entity_id);
      }
      $return = $response
        ->addCommand(new HtmlCommand('#like-' . $decode_data->entity_id, $entity_data->{$field_name}->likes));
    }
    elseif ($clicked == 'dislike') {
      if (!$already_clicked) {
        $entity_data->{$field_name}->dislikes--;
        $users->{$user} = "dislike";
      }
      else {
        return $this
          ->like_dislike_status($response, $decode_data->entity_id);
      }
      $return = $response
        ->addCommand(new HtmlCommand('#dislike-' . $decode_data->entity_id, $entity_data->{$field_name}->dislikes));
    }
    $entity_data->{$field_name}->clicked_by = json_encode($users);
    $entity_data
      ->save();
    return $return;
  }

  /**
   * Get the login and Registration options for ananomous user.
   *
   * @return mixed
   */
  protected function like_dislike_login_register() {
    $options = array(
      'attributes' => array(
        'class' => array(
          'use-ajax',
          'login-popup-form',
        ),
        'data-dialog-type' => 'modal',
      ),
    );
    $user_register = Url::fromRoute('user.register')
      ->setOptions($options);
    $user_login = Url::fromRoute('user.login')
      ->setOptions($options);
    $register = Link::fromTextAndUrl($this
      ->t('Register'), $user_register)
      ->toString();
    $login = Link::fromTextAndUrl($this
      ->t('Log in'), $user_login)
      ->toString();
    $content = array(
      'content' => array(
        '#markup' => "Only logged-in users are allowed to like/dislike. Visit " . $register . " | " . $login,
      ),
    );
    return $this->renderer
      ->render($content);
  }

  /**
   * Respond with the status, if user already liked/disliked.
   *
   * @param AjaxResponse $response
   * @param $entity_id
   * @return AjaxResponse
   */
  protected function like_dislike_status(AjaxResponse $response, $entity_id) {
    return $response
      ->addCommand(new HtmlCommand('#like_dislike_status-' . $entity_id, 'Already liked/disliked..!'));
  }

}

Members

Namesort descending Modifiers Type Description Overrides
ControllerBase::$configFactory protected property The configuration factory.
ControllerBase::$entityFormBuilder protected property The entity form builder.
ControllerBase::$entityManager protected property The entity manager.
ControllerBase::$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::entityManager Deprecated protected function Retrieves the entity manager service.
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. Overrides UrlGeneratorTrait::redirect
ControllerBase::state protected function Returns the state storage service.
LikeDislikeController::$currentUser protected property The current user service. Overrides ControllerBase::$currentUser
LikeDislikeController::$entityTypeManager protected property The entity type manager. Overrides ControllerBase::$entityTypeManager
LikeDislikeController::$renderer protected property The renderer.
LikeDislikeController::$requestStack protected property The request stack.
LikeDislikeController::create public static function Instantiates a new instance of this class. Overrides ControllerBase::create
LikeDislikeController::handler public function Like or Dislike handler.
LikeDislikeController::like_dislike_login_register protected function Get the login and Registration options for ananomous user.
LikeDislikeController::like_dislike_status protected function Respond with the status, if user already liked/disliked.
LikeDislikeController::__construct public function Constructs an LinkClickCountController object.
LinkGeneratorTrait::$linkGenerator protected property The link generator. 1
LinkGeneratorTrait::getLinkGenerator Deprecated protected function Returns the link generator.
LinkGeneratorTrait::l Deprecated protected function Renders a link to a route given a route name and its parameters.
LinkGeneratorTrait::setLinkGenerator Deprecated public function Sets the link generator service.
LoggerChannelTrait::$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::$messenger protected property The messenger. 29
MessengerTrait::messenger public function Gets the messenger. 29
MessengerTrait::setMessenger public function Sets the messenger.
RedirectDestinationTrait::$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::$stringTranslation protected property The string translation service. 1
StringTranslationTrait::formatPlural protected function Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals protected function Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation protected function Gets the string translation service.
StringTranslationTrait::setStringTranslation public function Sets the string translation service to use. 2
StringTranslationTrait::t protected function Translates a string to the current language or to a given language.
UrlGeneratorTrait::$urlGenerator protected property The url generator.
UrlGeneratorTrait::getUrlGenerator Deprecated protected function Returns the URL generator service.
UrlGeneratorTrait::setUrlGenerator Deprecated public function Sets the URL generator service.
UrlGeneratorTrait::url Deprecated protected function Generates a URL or path for a specific route based on the given parameters.