建立模型 YII activerecord 的特定关系

【问题标题】：Build a specific relation of models YII activerecord建立模型 YII activerecord 的特定关系
【发布时间】：2013-01-11 05:46:52
【问题描述】：

我正在尝试使用 CGridView 显示车辆模型。

为了显示 Fld7465RRef 引用列的值，需要以下 sql select：

select VUF._Fld7468_S as Loading_Time_To_DLR  
FROM Vehicles as Vehicles  
left join (_InfoReg7464 as VUF                 
inner join _Chrc7246 as CFU
on VUF._Fld7467RRef = CFU._IDRRef                  
and CFU._Description ='Vehicle uploading for DLRTime')                 
on Vehicles._IDRRef =  VUF._Fld7465RRef

我找不到为此查询建立关系的解决方案。

【问题讨论】：

标签： activerecord yii models yii-relations

【解决方案1】：

一种方法是DAO:

$mySqlString = "
    select VUF._Fld7468_S as Loading_Time_To_DLR  
    FROM Vehicles as Vehicles  
    left join (_InfoReg7464 as VUF                 
    inner join _Chrc7246 as CFU
    on VUF._Fld7467RRef = CFU._IDRRef                  
    and CFU._Description ='Vehicle uploading for DLRTime')                 
    on Vehicles._IDRRef =  VUF._Fld7465RRef
";
$command = Yii::app()->db->createCommand($mySqlString); 
$aResult = $command->query()->readAll();

当然，你应该用这样的语句绑定你的参数，如果有的话：

$command->bindParam(":userID", $userID, PDO::PARAM_STR);

另一种方式是query-builder

【讨论】：