<?php

//这个表头就不多说了

use yii\helpers\Html;

use yii\widgets\ActiveForm;

$form = ActiveForm::begin([

    'id'        => 'exam-form',

    'options'   => ['class' => 'form-horizontal','enctype'=>'multipart/form-data'],

    'action'    =>'?r=task/add',

    'method'    =>  'post',

]);

?>

文本框的默认选中：

<?  $model->username = '我是猪'?>

<?= $form->field($model,'username')->textInput(/*['value'=>'我是猪']*/)?><!--第二种用value-->

<?= $form->field($model,'pwd')->passwordInput()?>

单选框的默认选中：

<?  $model->sex = '1'?>           //value为1的将为默认选中

<?= $form->field($model,'sex')->radioList(['0'=>'男','1'=>'女'])?>

多选框的默认选中：（应该也能看的出来原理）

<?  $model->hobby = ['iphone','sanxing' ] ?>

<?= $form->field($model,'hobby')->checkboxList(['sanxing'=>'三星','iphone'=>'苹果','vivo'=>'步步高'])?>

下来菜单的默认选中：

<?  $model->news_classify = 3?>        //value为3的将为默认选中

<?= $form->field($model,'news_classify')->dropDownList($arr)?>

<div class=”form-group”>

    <div class=”col-lg-offset-1 col-lg-11″>

        <?= Html::submitButton('添加', ['class' => 'btn btn-primary']) ?>

    </div>

</div>

<?php ActiveForm::end() ?>