YII2的SqlDataProvider不工作關係表值

Question

這是我的模型愛好者：

<?php 

namespace backend\models; 

use Yii; 

class Riders extends \yii\db\ActiveRecord 
{ 
public static function tableName() 
{ 
    return 'riders'; 
} 

public function rules() 
{ 
    return [ 
     [['cagories_category_id', 'rider_firstname', 'rider_no_tlpn', 'rider_ucinumber', 'countries_id', 'rider_province', 'rider_city', 'rider_dateofbirth', 'rider_gender'], 'required'], 
     [['user_id', 'countries_id'], 'integer'], 
     [['rider_dateofbirth', 'cagories_category_id'], 'safe'], 
     [['rider_gender', 'rider_status'], 'string'], 
     [['rider_firstname', 'rider_lastname', 'rider_nickname', 'rider_province', 'rider_city'], 'string', 'max' => 45], 
     [['rider_email', 'rider_sponsor', 'rider_birthcertificate_url', 'rider_parental_consent_url'], 'string', 'max' => 100], 
     [['rider_no_tlpn'], 'string', 'max' => 15], 
     [['rider_ucinumber'], 'string', 'max' => 11] 
    ]; 
} 

/** 
* @inheritdoc 
*/ 
public function attributeLabels() 
{ 
    return [ 
     'rider_id' => 'rider_id', 
     'cagories_category_id' => 'Category Name', 
     'user_id' => 'User Team', 
     'rider_firstname' => 'Rider Firstname', 
     'rider_lastname' => 'Rider Lastname', 
     'rider_nickname' => 'Rider Nickname', 
     'rider_email' => 'Rider Email', 
     'rider_no_tlpn' => 'Rider No Tlpn', 
     'rider_ucinumber' => 'Rider Ucinumber', 
     'countries_id' => 'Country Name', 
     'rider_province' => 'Rider Province', 
     'rider_city' => 'Rider City', 
     'rider_sponsor' => 'Rider Sponsor', 
     'rider_dateofbirth' => 'Rider Dateofbirth', 
     'rider_gender' => 'Rider Gender', 
     'rider_birthcertificate_url' => 'Rider Birthcertificate Url', 
     'rider_parental_consent_url' => 'Rider Parental Consent Url', 
     'rider_status' => 'Rider Status', 
    ]; 
} 

/** 
* @return \yii\db\ActiveQuery 
*/ 
public function getRegistrations() 
{ 
    return $this->hasMany(Registrations::className(), ['riders_rider_id' => 'rider_id']); 
} 

/** 
* @return \yii\db\ActiveQuery 
*/ 
public function getCagoriesCategory() 
{ 
    return $this->hasOne(Categories::className(), ['category_id' => 'cagories_category_id']); 
} 

/** 
* @return \yii\db\ActiveQuery 
*/ 
public function getUser() 
{ 
    return $this->hasOne(User::className(), ['id' => 'user_id']) -> from(user::tableName() . 'ud'); 
} 

/** 
* @return \yii\db\ActiveQuery 
*/ 
public function getUserDesc() 
{ 
    return $this->hasOne(UserDesc::className(), ['desc_id' => 'user_id']) -> from(['ud' => userDesc::tableName()]); 
} 

/** 
* @return \yii\db\ActiveQuery 
*/ 
public function getCountries() 
{ 
    return $this->hasOne(Countries::className(), ['id' => 'countries_id']); 
} 

}

這是我的控制器的actionIndex：

$searchModel = new RidersSearch(); 
$dataProvider = $searchModel->search(Yii::$app->request->queryParams); 

$totalCount = Yii::$app->db->createCommand('SELECT COUNT(*) FROM riders WHERE user_id = :user_id', 
    [':user_id' => Yii::$app->user->identity->id])->queryScalar(); 

$dataProvider = new SqlDataProvider([ 
    'sql' => 'SELECT * FROM riders WHERE user_id = :user_id', 
    'params' => [':user_id' => Yii::$app->user->identity->id], 
    'totalCount' => $totalCount, 
    'key' => 'rider_id', 
    'pagination' => [ 
     'pageSize' => 10, 
    ], 
    'sort' => [ 
     'attributes' => [ 
      'cagories_category_id', 
      'rider_id', 
      'rider_firstname', 
      'rider_email:email', 
      'rider_no_tlpn', 
     ] 
    ] 
]); 

$models = $dataProvider->getModels(); 

return $this->render('index', [ 
    'searchModel' => $searchModel, 
    'dataProvider' => $dataProvider, 
]); 

這是我的看法指數：

<?= GridView::widget([ 
    'dataProvider' => $dataProvider, 
    // 'filterModel' => $searchModel, 
    'columns' => [ 
     ['class' => 'yii\grid\SerialColumn'], 
     [ 
      'label' => 'Category Name', 
      'attribute'=>'cagories_category_id', 
      'value' => 'cagoriesCategory.category_name', <---Can't work again 
     ], 
     [ 
      'label' => 'BIB', 
      'attribute'=>'rider_id', 
     ], 
     'rider_firstname', 
     'rider_email:email', 
     'rider_no_tlpn', 

     ['class' => 'yii\grid\ActionColumn'], 
    ], 
]); ?> 

在我之前se sqldataprovider，它可以從模型函數調用有關係，使用sqldataprovider後無法工作。如何獲得關係表值？ 然後才使用它，我可以合併rider_firstname和rider_lastname與return $model->rider_firstname . " " . rider_lastname;後使用sqldataprovider不能工作？

Answer 1

SqlDataProvider返回數據作爲數組，因此您可以不能夠訪問相關對象與$dataProvider->models()

要麼你必須使用ActiveDataProvider或改變你的SqlDataProvider的SQL連接條件

sql='sql' => 'SELECT * FROM riders inner join '. Categories::tableName() .' as c on c.category_id=riders.cagories_category_id WHERE user_id = :user_id'