yii\rbac\DbManager::removeChild PHP Метод

    public function removeChild($parent, $child)
    {
        $result = $this->db->createCommand()->delete($this->itemChildTable, ['parent' => $parent->name, 'child' => $child->name])->execute() > 0;
        $this->invalidateCache();
        return $result;
    }

 /**
  * Delete permission from a role.
  * @param string $roleName role name.
  * @param string $permName permission name.
  */
 public function actionDelperm($roleName, $permName)
 {
     $role = $this->getRole($roleName);
     $permissions = $this->_auth->getPermissionsByRole($roleName);
     if (!isset($permissions[$permName])) {
         $this->stderr("Role '{$roleName}' has not permission '{$permName}'.", Console::FG_RED);
         return;
     }
     if (!($item = $this->_auth->getPermission($permName))) {
         $this->stderr("Permission '{$permName}' cannot found by auth manager.", Console::FG_RED);
         return;
     }
     $this->_auth->removeChild($role, $item);
     $this->p('Permission "{perm}" removed from role "{role}"', ['perm' => $permName, 'role' => $role->name]);
     // Transfer permissions to Administrator role.
     if ($roleName != 'Administrator') {
         $adminRole = $this->getRole('Administrator');
         $permissions = $this->_auth->getPermissionsByRole($adminRole->name);
         if (!isset($permissions[$permName])) {
             $this->_auth->addChild($adminRole, $item);
             $this->p('Permission "{perm}" transfer to Administrator.', ['perm' => $permName]);
         }
     }
 }