标准 Yii 2 中的活动数据提供者 [英] criteria Active data provider in Yii 2

问题描述

我正在尝试使用适用于控制器的 Yii 1 的数据提供程序按日期降序显示每个用户的数据库:

I'm trying to display database for each user in descending date order using data provider this works for Yii 1 at controller :

         $DataProvider = new CActiveDataProvider('ModelName', array(
                'criteria' => array(
                'condition' => 'user_id=' . Yii::app()->user->id,
                'order' => 'submitted_dt DESC',
            ),
            'pagination' => array(
                'pageSize' => 20,
            ),
        ));

我在 Yii 2 中尝试这个:

i try this in Yii 2 :

     $DataProvider = new ActiveDataProvider([
                'query' => ModelName::find(),
              'criteria' => [
                'condition' => 'user_id=' . Yii::$app->user->identity->id,
                'order' => 'submitted_dt DESC',
                 ], 
            'pagination' => [
                'pageSize' => 20,
            ],
        ]);

        // get posts in the current page
        $Model= $DataProvider->getModels();

我得到的错误是未知属性:yii\data\ActiveDataProvider::criteria.那么设置这个条件和顺序的方法是什么?欢迎所有建议

Error i get is unknown property: yii\data\ActiveDataProvider::criteria .So what is the way to set this condition and order ? All suggestions are welcomed

推荐答案

Yii2 的正确做法是:

$DataProvider = new ActiveDataProvider([
        'query' => ModelName::find()->
            where(['user_id'=>Yii::$app->user->identity->id])->
            orderBy('submitted_dt DESC'),
        'pagination' => [
            'pageSize' => 20,
        ],
    ]);

    // get posts in the current page
    $Model= $DataProvider->getModels();

因此，您不需要 Yii2 中的 criteria 因为它不再存在.

So, you don't need criteria in Yii2 as this is not exist anymore.

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