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hook_node_access_records

6 core.php hook_node_access_records($node)
7 node.api.php hook_node_access_records($node)

Set permissions for a node to be written to the database.

When a node is saved, a module implementing hook_node_access_records() will be asked if it is interested in the access permissions for a node. If it is interested, it must respond with an array of permissions arrays for that node.

Each permissions item in the array is an array with the following elements:

  • 'realm': The name of a realm that the module has defined in hook_node_grants().
  • 'gid': A 'grant ID' from hook_node_grants().
  • 'grant_view': If set to TRUE a user that has been identified as a member of this gid within this realm can view this node.
  • 'grant_update': If set to TRUE a user that has been identified as a member of this gid within this realm can edit this node.
  • 'grant_delete': If set to TRUE a user that has been identified as a member of this gid within this realm can delete this node.
  • 'priority': If multiple modules seek to set permissions on a node, the realms that have the highest priority will win out, and realms with a lower priority will not be written. If there is any doubt, it is best to leave this 0.

Related topics

1 invocation of hook_node_access_records()

File

documentation/developer/hooks/core.php, line 1358
These are the hooks that are invoked by the Drupal core.

Code

function hook_node_access_records($node) {
  if (node_access_example_disabling()) {
    return;
  }

  // We only care about the node if it's been marked private. If not, it is
  // treated just like any other node and we completely ignore it.
  if ($node->private) {
    $grants = array();
    $grants[] = array(
      'realm' => 'example', 
      'gid' => 1, 
      'grant_view' => TRUE, 
      'grant_update' => FALSE, 
      'grant_delete' => FALSE, 
      'priority' => 0,
    );

    // For the example_author array, the GID is equivalent to a UID, which
    // means there are many many groups of just 1 user.
    $grants[] = array(
      'realm' => 'example_author', 
      'gid' => $node->uid, 
      'grant_view' => TRUE, 
      'grant_update' => TRUE, 
      'grant_delete' => TRUE, 
      'priority' => 0,
    );
    return $grants;
  }
}