yii 表单如何写，action指向哪里？

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();
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<?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(); ?>