Question

我有这个问题：我需要从数据库中获取数据并过滤它们。但后来我需要使用自定义php函数来过滤那些过滤后的结果。

ActiveDataProvider中的Clasic搜索功能

public function search($params) {

    $query = Passenger::find();

    // add conditions that should always apply here

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

    // I guess my function would go like here
    Passenger::filterResultsEvenMore($dataProvider);

    $this->load($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;
    }

    // grid filtering conditions
    $query->andFilterWhere([
        'passenger_id' => $this->passenger_id,
        // ...
        'version' => $this->version,
        'status' => $this->status,
    ]);

    return $dataProvider;
}

所以我的问题是如何处理dataProvider的结果，因为如果我对变量进行vardump看起来像这样，那里没有实际数据。

yii\data\ActiveDataProvider Object
(
    [query] => common\models\PassengerQuery Object
        (
            [sql] => 
            [on] => 
            [joinWith] => 
            [select] => 
            [selectOption] => 
            [distinct] => 
            [from] => 
            [groupBy] => 
            [join] => 
            [having] => 
            [union] => 
            [params] => Array()
            [_events:yii\base\Component:private] => Array()
            [_behaviors:yii\base\Component:private] => Array()
            [where] => Array
                (
                    [status] => 1
                )
            [limit] => 
            [offset] => 
            [orderBy] => 
            [indexBy] => 
            [emulateExecution] => 
            [modelClass] => common\models\Passenger
            [with] => 
            [asArray] => 
            [multiple] => 
            [primaryModel] => 
            [link] => 
            [via] => 
            [inverseOf] => 
        )
    [key] => 
    [db] => 
    [id] => 
    [_sort:yii\data\BaseDataProvider:private] => 
    [_pagination:yii\data\BaseDataProvider:private] => 
    [_keys:yii\data\BaseDataProvider:private] => 
    [_models:yii\data\BaseDataProvider:private] => 
    [_totalCount:yii\data\BaseDataProvider:private] => 
    [_events:yii\base\Component:private] => Array()
    [_behaviors:yii\base\Component:private] => 
)

更新

我需要为每条记录使用这样的函数：

if (myFunction(table_column_1, table_column_2)) {
    result_is_ok_return_it
} else {
    do_not_return_this_record
}

Answer 1

为什么不将其他过滤器添加到DataProvider中使用的查询对象？您可以将条件解析为$query->andFilterWhere()。如果你需要自定义函数，只需修改函数内的$dataProvider->query对象。在数据提供程序中执行查询后，您只能通过手动筛选存储在$dataProvider->models

中的模型数组来筛选结果

Answer 2

要使用models property或getModels()

获取结果

例如，

$dataProvider->models;

或

$dataProvider->getModels();

Answer 3

我想我遇到了一个解决方案，（看起来它正在运行）

http://www.yiiframework.com/doc-2.0/yii-data-basedataprovider.html#setModels()-detail

在我开始执行所有常规搜索内容之后，我会使用setModels()函数执行此类操作

    // ...

    $filtered_models = [];

    foreach ($dataProvider->models as $model) {
        if ($model->status == 1) // example
            $filtered_models[] = $model;
    }

    $dataProvider->setModels($filtered_models);

    return $dataProvider;

如何使用自定义php函数在ActiveDataProvider中进行过滤

3 个答案: