public function delAction($gid = null)
 {
     if ($gid) {
         $group = Groups::findFirst(array('gid = :gid:', 'bind' => array('gid' => $gid)));
         $group->delete();
     }
     $this->displayAjax(true, '删除成功');
 }
 /**
  * 保存管理员用户
  */
 public function saveAction()
 {
     $id = $this->dispatcher->getParam('id');
     $isNew = true;
     if (!empty($id)) {
         $isNew = false;
     }
     // update
     if ($this->request->isPost()) {
         $postData = array('username' => $this->request->getPost('username'), 'password' => $this->request->getPost('password'), 'email' => $this->request->getPost('email'), 'phone' => $this->request->getPost('phone'), 'createTime' => time(), 'status' => $this->request->getPost('status', 'int'), 'groupId' => $this->request->getPost('groupId', 'int'), 'truename' => $this->request->getPost('truename'));
         if (empty($postData['groupId'])) {
             $this->displayAjax(false, '请选择用户所属用户角色分组');
         } elseif (is_null($postData['password']) && $isNew) {
             // 新增无密码
             $this->displayAjax(false, '新增用户必须填入密码');
         }
         if (!empty($postData['password'])) {
             $postData['salt'] = rand(100000, 999999);
             $postData['password'] = md5(md5($postData['password']) . $postData['salt']);
         }
         if ($isNew) {
             // 新增
             // 判断账户是否存在
             $hasUser = Users::count(array("username = :username: ", 'bind' => array('username' => $username)));
             if ($hasUser) {
                 $this->displayAjax(false, '用户已存在无法新增!');
             }
             $user = new Users();
         } else {
             // 更新
             $user = Users::findFirst($id);
             if (!$user) {
                 $this->displayAjax(false, '您要更新的账户不存在!');
             }
         }
         if ($user->save($postData) == false) {
             $this->displayAjax(false, join($user->getMessages(), '<br>'));
         }
         $this->displayAjax(true);
     }
     $this->assign('id', $id);
     if (!$isNew) {
         $this->assign('model', Users::findFirst($id));
     }
     $this->assign('groups', Groups::find());
 }