这是效果图：

代码：

<?php $form = zActiveForm::begin([
    'action' => ['index'],
    'method' => 'get',
    'options' => ['data-pjax' => 'pjax-list'],
    'enableClientValidation' => false
]); ?>

    <div class="dis_search">
        <div class="form-inline search_first">

            <?= $form->field($model, 'date_type')->dropDownList(searchOrderMain::$date_type_array)->label(null, ['Yii' => 'normal'])->error(false) ?>

            <?= $form->field($model, 'date_from', ['options' => ['class' => 'input-group date form_date']])->textInput(['unit' => '<span class="input-group-addon"><span class="glyphicon glyphicon-calendar"></span></span>'])->label(false)->error(false) ?>
            --
            <?= $form->field($model, 'date_to', ['options' => ['class' => 'input-group date form_date']])->textInput(['unit' => '<span class="input-group-addon"><span class="glyphicon glyphicon-calendar"></span></span>'])->label(false)->error(false) ?>
            <?= $form->field($model, 'hotel_name')->textInput(['placeHolder' => '酒店名称'])->label('酒店名称', ['Yii' => 'normal'])->error(false) ?>
            <?= $form->field($model, 'channel_id')->dropDownList(ArrayHelper::map($model_list, 'ID', 'SUPPLIER_NAME'), ['prompt' => '请选择', 'class' => 'form-control select_screen', 'style' => 'width:172px;'])->label('销售渠道', ['Yii' => 'normal'])->error(false) ?>
        </div>
        <div class="form-inline search_second">
            <?= $form->field($model, 'diret_flag')->dropDownList([0 => '请选择', 556 => '直连订单', 557 => '非直连订单'])->label('订单类型', ['Yii' => 'normal'])->error(false) ?>
            <?= $form->field($model, 'confirm_num')->dropDownList([0 => '请选择', 1 => '有', 2 => '无'])->label('确认号', ['Yii' => 'normal'])->error(false) ?>
            <?= $form->field($model, 'search_key')->textInput(['placeHolder' => '订单号/渠道订单号/客人姓名/客人电话', 'style' => 'width:250px;'])->label('更多查询', ['Yii' => 'normal'])->error(false) ?>
            <?= $form->field($model, 'ORDER_STATUS')->hiddenInput()->label(false)->error(false) ?>
            <?= $form->field($model, 'CHANNEL_ORDER_STATUS')->hiddenInput()->label(false)->error(false) ?>
            <div class="form-group search_button">
                <?= Html::submitButton('<span class="glyphicon glyphicon-search"></span> 查询', ['class' => 'btn btn-primary left-20 loading-form', 'id' => 'search-button', 'onclick' => 'loading()']) ?>
                <?= Html::button('<span class="glyphicon glyphicon-save"></span> 导出订单', ['class' => 'btn btn-primary ', 'onclick' => 'z.exportExcel(\'form\', \'/hotel/ordermain/export\')']) ?>
            </div>
        </div>

    </div>
<?php zActiveForm::end(); ?>

这是我的项目里面的，没时间整理，提交的时候就会提交到你渲染这个页面的那个控制器了，当然你也可以自定义，类似于这样：

 <?php $form = zActiveForm::begin(['action' => '/hotel/hotel-room/set-bed-type', 'options' => ['class' => 'form-horizontal', 'data-pjax' => true]]); ?>

1、做的严谨一点的话，逐渐主键重复就更新呀，为什么还要新增？
2、

if (!$model->save()) {
    $errors = $this->getErrors();
    $str = [];
    foreach ($errors as $error) {
         $str[] = implode('；', $error);
    }
    return implode('；', $str);
}

这里获取错误有很多方法，自己去看下