Php 取消选择一个Select2:：widget的值时，它会从所有列中删除过滤器

在取消选择地区名称时，状态名称值也将取消选择如何防止此情况

在网格视图中选择2:：widget作为州名称和地区名称

取消选择一个Select2:：widget的值时，它会从所有列中删除过滤器

请提供解决方案

  <?php Pjax::begin(); ?>
   <?= GridView::widget([
    'dataProvider' => $dataProvider,
    'filterModel' => $searchModel,
    'columns' => [
        ['class' => 'yii\grid\SerialColumn','header'=>'S.No.','headerOptions' => [
                     'style' => 'color:#3c8dbc'],],
        [ 
            'attribute' => 'state_id',
            'filter' => Select2::widget([
                'name' => 'DistrictSearch[state_id]',
                'value' => isset($_GET['DistrictSearch']['state_id']) ? $_GET['DistrictSearch']['state_id'] :"",
                'data' => dependentFilterDropdown('state',$_GET),
                'options' => ['placeholder' => 'Select All','multiple' => true,'onchange' => 'refreshFilter(this.value)'],
                'pluginOptions' => [
                    'allowClear' => true
                ],
            ]),
            'value' => 'state.state_name'
        ],
        [ 
            'attribute' => 'district_name',
            'filter' => Select2::widget([
                'name' => 'DistrictSearch[district_name]',
                'value' => isset($_GET['DistrictSearch']['district_name']) ? $_GET['DistrictSearch']['district_name'] :"",
                'data' => dependentFilterDropdown('district',$_GET),
                'options' => ['placeholder' => 'Select All','multiple' => true,'onchange' => 'refreshFilter(this.value,"d")'],
                'pluginOptions' => [
                    'allowClear' => true
                ],
            ]),
            'value' => 'district_name'
        ],
        Utilities::Phase(),
        Utilities::CreatedAt('index'),    
        Utilities::UpdatedAt('index'), 

    ],
]); ?>

---

你为什么要加一次？这两个领域共同依赖吗？或者它们是完全独立的？这两个领域共同依赖。我应该用什么来代替onchange？

This function is call after unselect the filter value.

function refreshFilter(value,type){

    if (value == "") {
        window.location.replace("create");process.exit();
    } 
}