在yii2中使用ajaxsubmitbutton显示带有验证的加载程序

Question

提交表单时，请在没有填写表单的情况下显示第二名。以前的困惑和成功功能无法找到解决方案。如果单击“提交”按钮，则该表单之后如果表单为空白，则可以看到第二个。

 <div class="form-group m-t-20">
      <div class="pull-right">

      <input type="hidden" name="buttonclick" id="buttonclick" value="0">

      <?php app\vendor\demogorgorn\yii2ajax\AjaxSubmitButton::begin([

                'label' => Yii::t('app','Submit Ticket'),
                'id'=>'card-button',
                'ajaxOptions' => [
                'type'=>'POST',
                'url'=>'/ticket/index/',
                'beforeSend' => new \yii\web\JsExpression('function(html){

                    $("#paypal_loader").attr("disabled","disabled");
                $("#paypal_loader").show();

                }'),


                'success' => new \yii\web\JsExpression('function(html){

                    $("#paypal_loader").hide();

                    }'),
                ],
                'options' => ['class' => 'btn btn-primary', 'type' => 'submit'],]);

        app\vendor\demogorgorn\yii2ajax\AjaxSubmitButton::end();
        ?>

                                 <a class="btn btn-primary" href="/ticket/index" data-toggle="block" data-reset="#w6"  data-target="dt-aboutme">Cancel</a>

                              <!-- <?php } ?> -->

                          </div></div>