yii2中使用Active小部件

文本框:textInput();
密码框:passwordInput();
单选框:radio(),radioList(); 复选框:checkbox(),checkboxList(); 下拉框:dropDownList(); 隐藏域:hiddenInput(); 文本域:textarea(['rows'=>3]); 文件上传:fileInput(); 提交按钮:submitButton(); 重置按钮:resetButtun(); 

<?php $form = ActiveForm::begin(['action' => ['test/getpost'],'method'=>'post',]); ?> <? echo $form->field($model, 'username')->textInput(['maxlength' => 20]) ?> <? echo $form->field($model, 'password')->passwordInput(['maxlength' => 20]) ?> <? echo $form->field($model, 'sex')->radioList(['1'=>'男','0'=>'女']) ?> <? echo $form->field($model, 'edu')->dropDownList(['1'=>'大学','2'=>'高中','3'=>'初中'], ['prompt'=>'请选择','style'=>'width:120px']) ?> <? echo $form->field($model, 'file')->fileInput() ?> <? echo $form->field($model, 'hobby')->checkboxList(['0'=>'篮球','1'=>'足球','2'=>'羽毛球','3'=>'乒乓球']) ?> <? echo $form->field($model, 'info')->textarea(['rows'=>3]) ?> <? echo $form->field($model, 'userid')->hiddenInput(['value'=>3]) ?> <? echo Html::submitButton('提交', ['class'=>'btn btn-primary','name' =>'submit-button']) ?><?echo Html::resetButton('重置', ['class'=>'btn btn-primary','name' =>'submit-button']) ?><?php ActiveForm::end(); ?>



设置单选框默认：