Question

我在用户和论文之间有一种关系，我的dataProvider仅在Gridview中显示用户属性，而不显示论文的属性。有没有比以下方法更好的打印联接属性的方法：['attribute'] => ['table.attribute']？

型号：

public function search($params)
{
    $query = Request::find()->joinWith('user')->joinWith('thesis')->where(['thesis.staff'=> Yii::$app->user->identity->id]);

    $dataProvider = new ActiveDataProvider([
        'query' => $query,
    ]);

    $this->load($params);

    if (!$this->validate()) {
        // uncomment the following line if you do not want to return any records when validation fails
        // $query->where('0=1');
        return $dataProvider;
    }

视图：

<?= GridView::widget([
    'dataProvider' => $dataProvider,
    'filterModel' => $searchModel,
    'columns' => [
        ['class' => 'yii\grid\SerialColumn'],

        //'id',
        'title',
        ['attribute' => 'thesis',
        'value' => 'thesis.title'],
        //'company',
        'description:ntext',
        'duration',
        ['attribute' => 'user'
        'value' => 'user.id'],
        //'requirements',
        //'course',
        'n_person',
        'ref_person',
        'is_visible:boolean',
        //'created_at',
        //'staff',

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

控制器：

public function actionIndex()
{
    $searchModel = new SearchRequest();
    $dataProvider = $searchModel->search(Yii::$app->request->queryParams);

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

Answer 1

最好在 $ this-> load（$ params）;

之后添加代码

我的例子是：

.
.
.
$this->load($params);
if (!$this->validate()) {
    // uncomment the following line if you do not want to return any records when validation fails
    // $query->where('0=1');
    return $dataProvider;
}
$query->joinWith('user');
$query->joinWith('thesis');
$query->andFilterWhere(['thesis.staff'=> Yii::$app->user->identity->id]);
.
.
.

Answer 2

您需要在模型上添加关系获取器。

在论文模型上，您需要添加

public function getUser0 () {
    return $this->hasOne(\your\user\model\location\User::className(), ['id' => 'user']);
}

在您调用模型Thesis :: user0时，通过延迟加载用户关系可以填充模型中的内容，例如：

<?= GridView::widget([
    'dataProvider' => $dataProvider,
    'filterModel' => $searchModel,
    'columns' => [
        ['class' => 'yii\grid\SerialColumn'],
        /// ---- other attributes
        ['attribute' => 'user0.name'],
        /// ---- other attributes
    ],
]); ?>

问：yii2 dataProvider不显示联接属性

2 个答案: