'pluginEvents' => [

            //选择文件后给input加id
            'filebatchselected'=>"function(event, files) {
                $('.field-shop-shop_pic').show().find('input').attr('id','shop_pic');
            }",
            'fileuploaded' => "function (object,data,previewId, index){console.log(data);
                $('#shop_pic').val($('#shop_pic').val()+';'+data.response);
            }",
            'error' => "function (){
                alert('图片上传失败');
            }",
            "filebeforedelete" => "function (event, key, jqXHR, data) {
                console.log(key);
                var aborted = !window.confirm('你确定要删除该图片吗?');
                if (aborted) {
                    //window.alert('File deletion was aborted! ');
                };
                return aborted;
            }",
        ]

public function actionUpload()
{
    $model = new Shop();
    $model->pict_url = UploadedFile::getInstances($model, 'pict_url');
    $images = '';
    if ($model->pict_url) {
        foreach ($model->pict_url as $file) {
            $img_name =date("YmdHis").'_'.rand(10,99);
            $file->saveAs('juxd/uploads/' . $img_name . '.' . $file->extension);
            $images .= 'juxd/uploads/'.$img_name.'.'.$file->extension;
        }
        $model->pict_url = $images;
        return json_encode($model->pict_url);

    }


}




<?= $form->field($model, 'pict_url[]')->widget(FileInput::classname(), [
    'name' => 'quality_report',
    'pluginOptions' => [
        'uploadUrl'=>Url::to("upload"),
        'browseOnZoneClick'=>true,
        'uploadAsync'=> true,
        'maxFileCount'=> 10,
        'minFileCount'=> 1,
        'validateInitialCount'=> true,
        'overwriteInitial'=> false,
        'getImageUrl' => true,
        'initialPreviewConfig' => [],
        'allowedFileExtensions' => ["jpg", "png","gif"],
    ],
    'options' => [
        'accept' => 'image/*',
        'multiple'=> true,

    ],

]); ?>

'pluginEvents' => [

            //选择文件后给input加id
            'filebatchselected'=>"function(event, files) {
                $('.field-shop-shop_pic').show().find('input').attr('id','shop_pic');
            }",
            'fileuploaded' => "function (object,data,previewId, index){console.log(data);
                $('#shop_pic').val($('#shop_pic').val()+';'+data.response);
            }",
            'error' => "function (){
                alert('图片上传失败');
            }",
            "filebeforedelete" => "function (event, key, jqXHR, data) {
                console.log(key);
                var aborted = !window.confirm('你确定要删除该图片吗?');
                if (aborted) {
                    //window.alert('File deletion was aborted! ');
                };
                return aborted;
            }",
        ]