Question

我正在使用相关的模型列与CGridView过滤作斗争，我有两个模型Cars和Color，因此Color has_many Car and Car belongs_to 颜色。相关模型的网格列显示正常，我只是无法用它过滤。我收到mysql错误

Column not found: 1054 Unknown column 'carName'

颜色模型 HAS_MANY - 汽车

我从Car模型中声明了变量$ carName，因此该模型可以看到它。

public $carName;
public function rules()
{
   return array(
          array('id, carName, colourName', 'safe', 'on'=>'search'),
               )
}
public function relations()
{

    return array(
                'CarsObj'=>array(self::HAS_MANY, 'Cars', 'colourID')
    );
}

public function search()
{ 

    $criteria=new CDbCriteria;
    $criteria->with = "CarsObj";
    $criteria->compare('carName', $this->carName, true);

    $criteria->compare('id',$this->id);
    $criteria->compare('colourName',$this->colourName,true);


    return new CActiveDataProvider($this, array(
        'criteria'=>$criteria,
    ));
}

汽车模型 BELONGS_TO - 颜色

public function relations()
{ 
 return array( 
   'ColourObj'=>array(self::BELONGS_TO, 'Colour', 'colourID')
 );
}

CGridView，我使用颜色模型搜索作为我的dataProvider

 $model = new Colour('search');
 $data = $model->search(); 
 $this->widget('zii.widgets.grid.CGridView', array(
           'dataProvider'=>$data
           ,'filter'=>$model 
           ,'pager'=>array('header'=>'')  
           ,'columns'=>array( //related model column
                    'id',
                     'colourName',
                      array(
                            'header' => 'carName',
                            'type' => 'raw', 
                            'name' => 'carName',
                            'value' => function($data, $row) { //$data is item of DataProvider, $row is number of row (starts from 0)
                                $carNames= CHtml::listData((array)$data->ColourObj, 'id', 'carName');
                                return implode(', ', $carNames);
                            }
                            )

Answer 1

默认情况下，CActiveRecord使用延迟加载。您需要将属性together设置为true。使用with时，设置表别名也是一种很好的做法。

public function search(){ 
    $criteria=new CDbCriteria;
    $criteria->together = true;
    $criteria->with = 'CarsObj';
    $criteria->compare('CarsObj.carName',$this->carName,true);
    $criteria->compare('t.id',$this->id);
    $criteria->compare('t.colourName',$this->colourName,true);

    return new CActiveDataProvider($this, array(
        'criteria'=>$criteria,
    ));
}

Yii，关系模型过滤器serach

1 个答案: