<div class="page-select2-area">
<?php
$labelOptions = ['labelOptions' => ['class' => false]];
$form = ActiveForm::begin(['layout' => 'inline', 'method' => 'get', 'action' => ['order-list/'.Yii::$app->controller->action->id]]); ?>
<?= $form->field($searchModel, 'keyword')->textInput() ?>
<input type="text" placeholder="商品名称或订单号关键字">
<button type="submit" class="btn btn-default">搜索</button>
<?php \yii\bootstrap\ActiveForm::end(); ?>
</div>
此处是关键
'action' => ['order-list/'.Yii::$app->controller->action->id]