activefild中的下拉框（dropDownList）如何多选， [ 2.0 版本 ]

<?= $form->field($model, 'type')->dropDownList(ArrayHelper::map($data(下拉数组),'id($dita->id)','type_name($data->name)'),['style' => 'width:200px']) ?>

<?php
            echo $form->field($searchModel, 'orderState', [
                'inputOptions' => [
                    'multiple' => 'multiple',//这里加上
                    'placeholder' => $searchModel->getAttributeLabel('orderState'),
                    'class'       => 'form-control select-warp-option',
                ],
            ])->label(false)
            ->dropDownList(ArrayHelper::merge([''=>'全部阶段'], $orderStateList));
?>

twig模板写法

 {{ form.field(searchModel,'orderState',{'inputOptions':{'multiple':'multiple','class':'form-control select-warp-option'}}).label(false).dropDownList(dPlist)|raw }}