ActiveForm 结合GridView SearchModel [ 2.0 版本 ]

代码如下

    <?php $form = ActiveForm::begin([
        'action'    => ['link/sort','page'=>Yii::$app->request->get('page',1)],
        'method'    => 'post'
    ]);?>
    <?php Pjax::begin(['id'=>'sort']);?>
    <?= GridView::widget([
        'dataProvider' => $dataProvider,
        'filterModel' => $searchModel,
        'showFooter'    => true,
        'columns' => [
            'linkID',
            [
                'attribute' => 'title',
                'format'    => 'html',
                'value' => function ($model){
                    return Html::a($model->title,$model->siteUrl,['target'=>'_blank']);
                }
            ],
            'siteUrl:url',
            [
                'attribute' => 'expire',
                'value' => function ($data){
                    return date('Y-m-d H:i:s',$data->expire);
                }
            ],
            [
                'attribute' => 'sort',
                'format'    => 'raw',
                'footer'    => Html::submitButton('排序',['class'=>'btn btn-md btn-primary']),
                'value'     => function ($model){
                    return Html::input('text','Link[sort][' .$model->linkID . ']',$model->sort,['class'=>'form-control text-center width-50']);
                }
            ],
            [
                'attribute' => 'status',
                'value'     => function ($model){
                    return $model->status == 1 ? '有效' : '无效';
                }
            ],
            [
                'class' => 'yii\grid\ActionColumn',
                'template'=>'{view}  {update} {delete}',
                'header' => '操作',
                'buttons'=>[
                    'view'=> function ($url, $model, $key) {
                        return Html::a('<button class="btn btn-xs btn-primary"><i class="ace-icon fa fa-eye bigger-120"></i></button>',['link/view','id'=>$model->linkID]);
                    },
                    'update'=> function ($url, $model, $key) {
                        return Html::a('<button class="btn btn-xs btn-warning"><i class="ace-icon fa fa-pencil bigger-120"></i></button>',['link/update','id'=>$model->linkID]);
                    },
                    'delete'=>function ($url,$model,$key){
                        return Html::a('<botton class="btn btn-xs btn-danger"><i class="ace-icon fa fa-times bigger-120"></i></botton>',['link/delete','id'=>$model->linkID],['data-confirm'=>'您真的要删除?']);
                    }
                ]
            ]
        ],
    ]); ?>
    <?php Pjax::end();?>
    <?php $form->end();?>

问题：
GridView中的sort字段我用想给个批量修改功能，因此给sort字段自定义了个input以及增加了排序表单按钮，然后在GridView外围嵌套了一个form,用ActiveForm生成。导致了searchModel搜索的提交地址不正确

这样一来，searchModel定义的搜索功能就跟ActiveForm冲突了
请问怎么解决，或者用什么方法实现