class QuizResultAnswerAccessControlHandler in Quiz 8.5

Hierarchy

• class \Drupal\Core\Entity\EntityHandlerBase uses DependencySerializationTrait, StringTranslationTrait
  • class \Drupal\Core\Entity\EntityAccessControlHandler implements EntityAccessControlHandlerInterface
    • class \Drupal\entity\EntityAccessControlHandlerBase
      • class \Drupal\entity\UncacheableEntityAccessControlHandler
        • class \Drupal\quiz\Access\QuizResultAnswerAccessControlHandler

File

src/Access/QuizResultAnswerAccessControlHandler.php, line 12

Namespace

Drupal\quiz\Access

class QuizResultAnswerAccessControlHandler extends UncacheableEntityAccessControlHandler {

  /**
   * Control access to taking a question or viewing feedback within a quiz.
   *
   * {@inheritdoc}
   */
  function checkAccess(EntityInterface $entity, $operation, AccountInterface $account) {
    if ($operation == 'take') {

      /* @var $entity QuizResultAnswer */
      $quiz = $entity
        ->get('result_id')
        ->referencedEntities()[0]
        ->get('qid')
        ->referencedEntities()[0];
      if (empty($_SESSION['quiz'][$quiz
        ->id()]['result_id'])) {

        // No access if the user isn't taking this quiz.
        return AccessResultForbidden::forbidden();
      }
      if ($quiz
        ->get('allow_jumping')
        ->getString()) {

        // Access to go to any question. Yay.
        return AccessResultAllowed::allowed();
      }
      $qra_last = $entity
        ->getPrevious();
      $qra_next = $entity
        ->getNext();
      if (!$quiz
        ->get('backwards_navigation')
        ->getString()) {

        // No backwards navigation.
        if ($entity
          ->isAnswered()) {

          // This question was answered already.
          return AccessResultForbidden::forbidden();
        }
      }

      // Enforce normal navigation.
      if (!$qra_last || $qra_last
        ->isAnswered()) {

        // Previous answer was submitted or this is the first question.
        return AccessResultAllowed::allowed();
      }
      return AccessResultForbidden::forbidden();
    }
    if ($operation == 'feedback') {
      if ($entity
        ->isAnswered()) {

        // The user has answered this question, so they can see the feedback.
        return AccessResultAllowed::allowed();
      }

      // If they haven't answered the question, we want to make sure feedback is
      // blocked as it could be exposing correct answers.
      // @todo We may also want to check if they are viewing feedback for the
      // current question.
      return AccessResultForbidden::forbidden();
    }
    return parent::checkAccess($entity, $operation, $account);
  }

}

Members

Name	Modifiers	Type	Description	Overrides
DependencySerializationTrait::$_entityStorages	protected	property	An array of entity type IDs keyed by the property name of their storages.
DependencySerializationTrait::$_serviceIds	protected	property	An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep	public	function		1
DependencySerializationTrait::__wakeup	public	function		2
EntityAccessControlHandler::$accessCache	protected	property	Stores calculated access check results.
EntityAccessControlHandler::$entityType	protected	property	Information about the entity type.
EntityAccessControlHandler::$entityTypeId	protected	property	The entity type ID of the access control handler instance.
EntityAccessControlHandler::$viewLabelOperation	protected	property	Allows to grant access to just the labels.	5
EntityAccessControlHandler::access	public	function	Checks access to an operation on a given entity or entity translation. Overrides EntityAccessControlHandlerInterface::access	1
EntityAccessControlHandler::checkFieldAccess	protected	function	Default field access as determined by this access control handler.	4
EntityAccessControlHandler::createAccess	public	function	Checks access to create an entity. Overrides EntityAccessControlHandlerInterface::createAccess	1
EntityAccessControlHandler::fieldAccess	public	function	Checks access to an operation on a given entity field. Overrides EntityAccessControlHandlerInterface::fieldAccess
EntityAccessControlHandler::getCache	protected	function	Tries to retrieve a previously cached access value from the static cache.
EntityAccessControlHandler::prepareUser	protected	function	Loads the current account object, if it does not exist yet.
EntityAccessControlHandler::processAccessHookResults	protected	function	We grant access to the entity if both of these conditions are met:
EntityAccessControlHandler::resetCache	public	function	Clears all cached access checks. Overrides EntityAccessControlHandlerInterface::resetCache
EntityAccessControlHandler::setCache	protected	function	Statically caches whether the given user has access.
EntityAccessControlHandlerBase::checkCreateAccess	protected	function	Performs create access checks. Overrides EntityAccessControlHandler::checkCreateAccess
EntityAccessControlHandlerBase::checkEntityPermissions	protected	function	Checks the entity operation and bundle permissions.
EntityHandlerBase::$moduleHandler	protected	property	The module handler to invoke hooks on.	2
EntityHandlerBase::moduleHandler	protected	function	Gets the module handler.	2
EntityHandlerBase::setModuleHandler	public	function	Sets the module handler for this handler.
QuizResultAnswerAccessControlHandler::checkAccess		function	Control access to taking a question or viewing feedback within a quiz. Overrides EntityAccessControlHandlerBase::checkAccess
StringTranslationTrait::$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.
UncacheableEntityAccessControlHandler::checkEntityOwnerPermissions	protected	function	Checks the entity operation and bundle permissions, with owners. Overrides EntityAccessControlHandlerBase::checkEntityOwnerPermissions
UncacheableEntityAccessControlHandler::__construct	public	function	Constructs an access control handler instance. Overrides EntityAccessControlHandler::__construct