如何在yii的CGridview中显示相关表中的数据

Question

我正在尝试使用 CGridView 显示结果。我有两个表 Users 和 products。 ExiProducts 是维护多对多关系的表，然后让关系名称为'myrelation'

public function actionSearch() {   
   if(isset($_GET['searchButton'] && $_GET['searchType']==='products') {
       $searchString=  trim(strip_tags($_GET['searchValue']));
       $model=new Products;
       $criteria->compare('productName', $searchString, TRUE, 'AND', TRUE);
       $criteria->compare('productType',$searchString,true,'OR',TRUE);
       $criteria->compare('productBrand',$searchString,true,'OR',TRUE);
       $criteria->compare('description',$searchString,true,'OR',true);

       $dataProviderObj=new CActiveDataProvider($model, array(
           'criteria'=>$criteria,
       ));  


   }

   $this->render('search',array(
       'dataProviderObj'=>$dataProviderObj,
        'model'=>$model,

   ));

}

这是我的view.php

 $this->widget('zii.widgets.grid.CGridView', array(
        'id'=>'users-grid',

        'dataProvider'=>$dataProviderObj,
        'columns'=>array(

            'productName',
            'productType',
            'productBrand',
            'description',
                    'I WANT THE NAME OF EVERY USER THAT CREATED THIS PRODUCT 
 HERE WHICH IS IN THE USERS TABLE '

        ),
 ));

谁能告诉我如何获得在那里创建这些产品的用户的名称。 users 表中的列是

UserId,
Username

和ExiProducts是

UserId,
ProductId

更新了我的代码

public function gridCreateUser($data,$row) {
     $myproducts=array();

     $user = $data->userId;
     $records= Users::model()->with('usersproducts')->findAll('userId=:userId',array(':userId'=>$user));
        foreach($records as $record)
        {
            foreach($record->usersproducts as $productis)
            {
                $myproducts[]=$productis->productName;
            }

        }
        return $myproducts;


}

Answer 1

网格视图视图

$this->widget('zii.widgets.grid.CGridView', array(
    'id'=>'users-grid',

    'dataProvider'=>$dataProviderObj,
    'columns'=>array(

        'productName',
        'productType',
        'productBrand',
        'description',
        array(
            'name' => '<column_name>'
            'value' => array($this,'gridCreateduser')
        )
     ),
));

这是你的网格视图value => array($this,'gridCreatedUser')，这意味着网格视图将在其控制器中搜索函数gridCreateUser()

现在在控制器中

public function gridCreateUser($data,$row){

     $user = $data-><colmn_name>;
     //do your stuff for finding the username or name with $user
     //for eg.
     $detail = User::model()->findByPk($user);
     // make sure what ever model you are calling is accessible from this controller other wise you have to import the model on top of the controller above class of the controller.
     return $detail->username;
}

不，这会将该列名称的所需值发送到网格视图。

或者您可以通过在您正在创建其网格视图的模型中定义模型之间的关系来以简单的方式使用

public function relations(){
    return array(
        'users' => array(self::HAS_MANY, 'Users', '<column_name>'),
    );
}

然后你可以直接在你的网格视图中访问它

$this->widget('zii.widgets.grid.CGridView', array(
   'id'=>'users-grid',

   'dataProvider'=>$dataProviderObj,
   'columns'=>array(
       'productName',
       'productType',
       'productBrand',
       'description',
       array(
          'name' => '<column_name>'
          'value' => $data->users->username
       )
    ),
));

Answer 2

这很容易。

你所要做的就是在模型文件 ExiProducts 中写一个关系

  public function relations() {
        // NOTE: you may need to adjust the relation name and the related
        // class name for the relations automatically generated below.
        return array(
            'user' => array(self::BELONGS_TO, 'users', 'UserId'),
        );
    }

你可以在网格视图中使用它

$this->widget('zii.widgets.grid.CGridView', array(
    'id'=>'users-grid',

    'dataProvider'=>$dataProviderObj,
'columns'=>array(

        'productName',
        'productType',
        'productBrand',
        array(
    'header'=>'User Name', 
    'value'=>'CHtml::encode($data->user->Username)',//This will use the relationship and get all the details of the paticular user from users table
        ),

    ),
));

Answer 3

通过编辑模型页面中的关系（）来在用户表中添加关系，如图所示

public function relations() {
    // NOTE: you may need to adjust the relation name and the related
    // class name for the relations automatically generated below.
    return array(
        'user' => array(self::BELONGS_TO, 'users', 'UserId'),
    );
}

在你的 view.php 中，

$this->widget('zii.widgets.grid.CGridView', array(
    'id'=>'users-grid',

    'dataProvider'=>$dataProviderObj,
    'columns'=>array(

        'productName',
        'productType',
        'productBrand',
        'description',
         array(
            'name'=>'User Name', 
            'value'=>$model->->user->Username,

        ),       

    ),
));