function vppn_node_access in View Permission Per Node 7

Implements hook_node_access().

File

./vppn.module, line 183

Configuration for VPPN.

Code

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

  // Only concerned with viewing.
  if ($op != 'view') {

    // Ignore if any other op.
    return NODE_ACCESS_IGNORE;
  }

  // Make sure there's a node id.
  if (empty($node->nid)) {

    // Should never happen but ignore if no nid.
    return NODE_ACCESS_IGNORE;
  }

  // Check if it's a valid VPPN content type.
  if (empty($node->type) || !variable_get('vppn_node_' . $node->type, 0)) {

    // Not a VPPN node type, we don't care.
    return NODE_ACCESS_IGNORE;
  }

  // Get the records for this node.
  $records = db_select('vppn')
    ->fields('vppn', array(
    'rid',
  ))
    ->condition('nid', $node->nid)
    ->execute();

  // Check that there is a record for this node.
  if (!$records
    ->rowCount()) {

    // No record.
    return NODE_ACCESS_IGNORE;
  }

  // Get the roles that can view this node.
  $allowed_roles = array_flip($records
    ->fetchCol());

  // Make sure the user has one of the allowed roles.
  return count(array_intersect_key($allowed_roles, $account->roles)) ? NODE_ACCESS_ALLOW : NODE_ACCESS_DENY;
}