function quiz_question_node_access in Quiz 8.4

Same name and namespace in other branches

1. 7 question_types/quiz_question/quiz_question.module \quiz_question_node_access()

Implements hook_node_access().

File

question_types/quiz_question/quiz_question.module, line 69

Quiz Question module. This module provides the basic facilities for adding quiz question types to a quiz.

Code

function quiz_question_node_access($node, $op, $account) {

  // We could use the "$node->is_quiz_question" property to check if it's a question type node or not.
  // But by hook_node_access() definition $node can be a node object or the machine name of the
  // content type. Using _quiz_question_get_implementations() as a workaround for this.
  $question_types = array_keys(_quiz_question_get_implementations());
  $type = is_string($node) ? $node : $node
    ->getType();
  if (!in_array($type, $question_types)) {
    return NODE_ACCESS_IGNORE;
  }
  switch ($op) {
    case 'view':
      if (!user_access('view quiz question outside of a quiz')) {
        return NODE_ACCESS_DENY;
      }
      break;
    case 'create':
      if (!user_access('create quiz content', $account)) {
        return NODE_ACCESS_DENY;
      }
      break;
    case 'update':
      if (user_access('edit any quiz content', $account) || user_access('edit own quiz content', $account) && $account->uid == $node->uid) {
        return NODE_ACCESS_ALLOW;
      }
      break;
    case 'delete':
      if (user_access('delete any quiz content', $account) || user_access('delete own quiz content', $account) && $account->uid == $node->uid) {
        return NODE_ACCESS_ALLOW;
      }
      break;
  }

  // Returning nothing from this function would have the same effect.
  return NODE_ACCESS_IGNORE;
}