public function UserSelection::entityQueryAlter

Overrides SelectionBase::entityQueryAlter().

Overrides SelectionBase::entityQueryAlter

File

drupal/core/modules/user/lib/Drupal/user/Plugin/entity_reference/selection/UserSelection.php, line 102

Contains \Drupal\user\Plugin\entity_reference\selection\UserSelection.

Class

UserSelection

Provides specific access control for the user entity type.

Namespace

Code

public function entityQueryAlter(SelectInterface $query) {
  if (user_access('administer users')) {

    // In addition, if the user is administrator, we need to make sure to
    // match the anonymous user, that doesn't actually have a name in the
    // database.
    $conditions =& $query
      ->conditions();
    foreach ($conditions as $key => $condition) {
      if ($key !== '#conjunction' && is_string($condition['field']) && $condition['field'] === 'users.name') {

        // Remove the condition.
        unset($conditions[$key]);

        // Re-add the condition and a condition on uid = 0 so that we end up
        // with a query in the form:
        // WHERE (name LIKE :name) OR (:anonymous_name LIKE :name AND uid = 0)
        $or = db_or();
        $or
          ->condition($condition['field'], $condition['value'], $condition['operator']);

        // Sadly, the Database layer doesn't allow us to build a condition
        // in the form ':placeholder = :placeholder2', because the 'field'
        // part of a condition is always escaped.
        // As a (cheap) workaround, we separately build a condition with no
        // field, and concatenate the field and the condition separately.
        $value_part = db_and();
        $value_part
          ->condition('anonymous_name', $condition['value'], $condition['operator']);
        $value_part
          ->compile(Database::getConnection(), $query);
        $or
          ->condition(db_and()
          ->where(str_replace('anonymous_name', ':anonymous_name', (string) $value_part), $value_part
          ->arguments() + array(
          ':anonymous_name' => user_format_name(user_load(0)),
        ))
          ->condition('users.uid', 0));
        $query
          ->condition($or);
      }
    }
  }

  // Add the filter by role option.
  if (!empty($this->instance['settings']['handler_settings']['filter'])) {
    $filter_settings = $this->instance['settings']['handler_settings']['filter'];
    if ($filter_settings['type'] == 'role') {
      $tables = $query
        ->getTables();
      $base_table = $tables['base_table']['alias'];
      $query
        ->join('users_roles', 'ur', $base_table . '.uid = ur.uid');
      $query
        ->condition('ur.rid', $filter_settings['role']);
    }
  }
}