Yii 增删改查 测试记录

亲们， 我是yii小白 不要笑话我奥。今天白天写一个管理模块涉及到 yii ar 下的  curd 操作，做 update 操作时纠结了好久，今天晚上花点时间学习， 下面写下我的测试记录

代码如下：

     public function actionIndex(){

         // 写入数据
         //yii  ar  curd  之   insert
         $_POST['Users']['sex'] = 2;
         $_POST['Users']['username'] = 'xiaohua';
         $model = new Users;
         $model->attributes = $_POST['Users'];
         $rt = $model->save();

         if($rt) {
             Yii::app()->user->setFlash('success','写入成功了');
             $this->redirect(array('index/test'));
         } else {
             Yii::app()->user->setFlash('error','失败了');
             $this->redirect(array('index/test'));
         }

         // 查询数据
         //get one data by field
         $hh = Users::model()->find(
               'username=:name',array(':name'=>'fzb')
             );
         print_r($hh['username']);

         //get one data by id
         $hh = Users::model()->findByPk(1);
         print_r($hh['username']);

         //get all
         $hh = Users::model()->findAll();
         print_r($hh);

         //  修改数据
         // update  one
         $model = new Users;
         $count = $model->updateByPk(5,array('username'=>'admin','sex'=>1));
         if($count) {
             Yii::app()->user->setFlash('success','修改成功了');
             $this->redirect(array('index/test'));
         } else {
             Yii::app()->user->setFlash('error','修改失败了');
             $this->redirect(array('index/test'));
         }

     }

---分页查询

一般写法：
$criteria = new CDbCriteria;
$count = DnOnline::model()->count($criteria);
$pages = new CPagination($count);               
$pages->pageSize = 5;
$pages->applylimit($criteria);
$model = DnOnline::model()->findAll($criteria);

记得控制器里有个函数paginate($itemCount,$pageSize=null,$pageVar=null)
CDB写法：

$criteria = new CDbCriteria;
$sql = "SELECT * FROM USER";
$model= Yii::app()->db->createCommand($sql)->queryAll();
$pages = new CPagination(count($model));               
$pages->pageSize = 4;
$pages->applylimit($criteria);
$model=Yii::app()->db->createCommand($sql." LIMIT :offset,:limit");
$model->bindValue(':offset', $pages->currentPage*$pages->pageSize);
$model->bindValue(':limit', $pages->pageSize);
$model=$model->queryAll();

或者:

$criteria = new CDbCriteria;
      $connection=Yii::app()->db; 
      $sql="SELECT u.account,i.* FROM sys_user as u left join user_info as i on u.id=i.user_id ";
      $model= Yii::app()->db->createCommand($sql)->queryAll();
      $pages = new CPagination(count($model));               
      $pages->pageSize = 4;
      $pages->applylimit($criteria);

$model=Yii::app()->db->createCommand($sql." LIMIT :offset,:limit");
      $model->bindValue(':offset', $pages->currentPage*$pages->pageSize);
      $model->bindValue(':limit', $pages->pageSize);
      $model=$model->queryAll();

yii 删除

1、Post::model()->deleteAll($condition,$params);  $count = Admin::model()->deleteAll('username=:nameandpassword=:pass',array(':name'=>'admin',':pass'=>'admin'));          $id=1,2,3           deleteAll('id in(".$id.")');删除id为这些的数据 if($count>0){     echo "删除成功";  }else{     echo "删除失败";  }   2、Post::model()->deleteByPk($pk,$condition,$params); $count = Admin::model()->deleteByPk(1); $count =Admin::model()->deleteByPk(array(1,2),'username=:name',array(':name'=>'admin')); if($count>0){     echo "删除成功";  }else{     echo "删除失败";  }

希望大婶们嘴下留情

我还是小白呢

有不足之处希望大家指出，谢谢！