模型:
有多少数据表,就建立多少模型
模型其实就是类
我们对数据库进行操作,需要实例化模型类,产生对象
通过对象调用相关的方法,就可以实现数据库的操作
增加记录
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1 [php] 2 $post =newPost(); 3 $post->title ="jack"; 4 $post->content ="1111111"; 5 $post->createtime = time(); 6 $post->save();
通过观察mdm项目发现在model中大多数的insert操作使用的是DAO方式,原生的insert sql语句;
在model中可以这样:
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1 public function insert($id,$name) 2 { 3 $con = $this->dbConnection; 4 $sql="insert into user (username,createtime) values (:username,:createtime);"; 5 $time = date("Y-m-d H:i:s"); 6 $cmd = $con->createCommand($sql); 7 $cmd->bindParam(":username",$name,PDO::PARAM_STR); 8 $cmd->bindParam(":createtime",$time,PDO::PARAM_STR); 9 $cmd->execute(); 10 }
或者在controller中使用AR的较多(更多的操作方式是如下在控制器中执行,使用AR类的save()方法):
前提是,要在Model中,定义好rule,rule怎么定义,暂时还没弄明白
官方给的是如下原因:
我们可以使用attributes属性统一收集表单信息,但是数据表约束规则必须完整。
并且需要设置验证规则rules为safe,否则信息无法被attributes保存
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1 public function actionInsert() 2 { 3 $arr = array(); 4 $array["name"]= $_GET["name"]; 5 $array["time"]= $_GET["time"]; 6 $user =newManagementUser("save"); 7 $user->attributes = $arr; 8 $saved = $user->save(); 9 if($saved){ 10 echo 'success'; 11 }else{ 12 echo 'fail'; 13 } 14 }
更新记录
一般也是在controller中更新,
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1 public function actionUpdate() 2 { 3 $id = $_GET["id"]; 4 $policy =newDevicePolicy("update"); 5 $parray = array(); 6 $parray["name"]='default'; 7 $parray["time"]= time(); 8 $update = $policy->updateAll($parray,"id=:pid",array(":pid"=>$id)); 9 }
findByPk()使用
不实例化对象,操作数据库的方式如下:ManagementEndGroup::model()->find();
1 public function actionModify() 2 { 3 $manageData = json_decode(file_get_contents("php://input")); 4 $datarry = array(); 5 $datarry["id"] = $manageData->groupid; 6 $datarry["name"] = $manageData->groupname; 7 $datarry["desc"] = $manageData->groupdesc; 8 if(isset($manageData->upgroup)) 9 $datarry["upgroup_id"] = $manageData->upgroup; 10 $manage = ManagementEndGroup::model()->findByPk($manageData->groupid); 11 $manage->attributes = $datarry; 12 $saved = $manage->save(); 13 $rslt = new stdClass(); 14 $rslt->code = $saved?0:-1; 15 print_r(json_encode($rslt)); 16 }
Goods.php(模型)
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1 /** 2 * 查询商品列表(数组方式) 3 */ 4 public function GoodsList() 5 { 6 $sql = "select * from sw_goods where 1=1"; 7 $result = $this->findAllBySql($sql); 8 9 $resultarray = array(); 10 foreach ($result as $item) 11 { 12 $itemarray = array(); 13 $itemarray["goods_id"] = $item["goods_id"]; 14 $itemarray["goods_name"] = $item["goods_name"]; 15 $itemarray["goods_weight"] = $item["goods_weight"]; 16 $itemarray["goods_price"] = $item["goods_price"]; 17 $itemarray["goods_number"] = $item["goods_number"]; 18 $itemarray["goods_category_id"] = $item["goods_category_id"]; 19 $itemarray["goods_brand_id"] = $item["goods_introduce"]; 20 $itemarray["goods_big_img"] = $item["goods_big_img"]; 21 $itemarray["goods_small_img"] = $item["goods_small_img"]; 22 $itemarray["goods_create_time"] = $item["goods_create_time"]; 23 $resultarray[]=$itemarray; 24 } 25 return $resultarray; 26 // print_r($resultarray); 27 }
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GoodsController.php(控制器)
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1 //商品列表页 2 publicfunction actionCategory() 3 { 4 //render()带布局渲染 5 //renderPartial()部分渲染 6 $goods =newGoods(); 7 $goodslist = $goods->GoodsList(); 8 print_r($goodslist); 9 $this->render('category'); 10 }