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   2. drupal7

Determine whether the user has a global viewing grant for all nodes.

Verwandte Themen

Node access rights

The node access system determines who can do what to which nodes.

Code

modules/node/node.module, line 2556

<?php
function node_access_view_all_nodes() {
  static $access;

  if (!isset($access)) {
    // If no modules implement the node access system, access is always true.
    if (!module_implements('node_grants')) {
      $access = TRUE;
    }
    else {
      $query = db_select('node_access');
      $query->addExpression('COUNT(*)');
      $query
        ->condition('nid', 0)
        ->condition('grant_view', 1, '>=');

      $grants = db_or();
      foreach (node_access_grants('view') as $realm => $gids) {
        foreach ($gids as $gid) {
          $grants->condition(db_and()
            ->condition('gid', $gid)
            ->condition('realm', $realm)
          );
        }
      }
      if (count($grants) > 0 ) {
        $query->condition($grants);
      }
      $access = $query
        ->execute()
        ->fetchField();
    }
  }

  return $access;
}
?>