从Yii2高级模板Gridview获取值过滤

Question

这是我的代码：

<?= html::a('Download Excel',NULL, ['class' => 'btn btn-primary','onclick'=>'
          var query;
          $.ajax({
            type: "GET",
            url:"'.Url::to(['excel']).'",
            data:query,
            success:function(response){
              response = response.replace(/^s+|s+$/g,"");
              location.href = response;
            }
          })
']) ?>

<?php Pjax::begin(['id' => 'pjax-gridview']) ?>
<?= GridView::widget([
    'dataProvider' => $dataProvider2,
    'filterModel' => $searchModel,
    'columns' => [
        ['class' => 'yiigridSerialColumn'],

        //'m_id',
        [
          'attribute'=>'ins_id',
          'format' => 'text',
          'filter' => ArrayHelper::map($data,'ins_id','ins_nama'),
          'value' => function($data){
                $ins = new Instansi();
                $nama = $ins->find()->where(['ins_id'=>$data->ins_id])->one();
                return $nama->ins_nama;
          },
        ],
        'm_kegiatan',
        'm_location',
        [
          'attribute'=>'m_sifat',
          'format' => 'text',
          'filter' => Array('baru' => 'Baru', 'lanjutan' => 'Lanjutan', 'rehab' => 'Rehab', 'perluasan' => 'Perluasan'),
        ],
        'm_volume',
        [
          'attribute'=>'m_biaya',
          'format' => 'text',
          'value' => function($data){
                return 'Rp. '.number_format($data->m_biaya,'0',',','.');
          },
        ],
        //'created_by',
        //'created_at',
        //'updated_by',
        //'updated_at',
        //'m_status',
    ],
]); ?>
<?php Pjax::end() ?>

我想从网格视图过滤器中获取价值，比如当我在网格上添加过滤器时，索引URL将变为localhost / frontend / controller_name / index？ModelSearch [name] = filter_value

所以我的ajax的URL将是localhost / frontend / controller_name / excel？ModelSearch [name] = filter_value

但我不知道如何从gridview过滤器中获取价值，我尝试使用Pjax id进行序列化，但它现在正在工作，也许你们可以提供帮助吗？