Yii，CactiveForm在数据库中保存多个表

im在yii上新建，并试图将数据保存在CactiveForm上的不同表中。。这是我正在查看的代码：

<?php
/* @var $this UserController */
/* @var $user User */
/* @var $form CActiveForm */
?>
<div class="form">
<?php $form=$this->beginWidget('CActiveForm', array(
        'id'=>'user-form',
        // Please note: When you enable ajax validation, make sure the corresponding
        // controller action is handling ajax validation correctly.
        // There is a call to performAjaxValidation() commented in generated controller code.
        // See class documentation of CActiveForm for details on this.
        'enableAjaxValidation'=>false,
)); ?>
        <p class="note">Fields with <span class="required">*</span> are required.</p>
        <?php echo $form->errorSummary($user, $gunwcuser, $game, $cash); ?>
        <div class="row">
                <?php echo $form->labelEx($user,'user'); ?>
                <?php echo $form->textField($user,'user',array('size'=>16,'maxlength'=>16)); ?>
                <?php echo $form->error($user,'user'); ?>
        </div>
        <div class="row">
                <?php echo $form->labelEx($user,'Gender'); ?>
                <?php echo $form->radioButtonList($user,'Gender', array(0 => 'Male', 1 => 'Female'), array('labelOptions'=>array('style'=>'display:inline'), 'separator'=>' ',)); ?>
                <?php echo $form->error($user,'Gender'); ?>
        </div><br>
        <div class="row">
                <?php echo $form->labelEx($user,'NickName'); ?>
                <?php echo $form->textField($user,'NickName',array('size'=>16,'maxlength'=>16)); ?>
                <?php echo $form->error($user,'NickName'); ?>
        </div>
        <div class="row">
                <?php echo $form->labelEx($user,'Password'); ?>
                <?php echo $form->passwordField($user,'Password',array('size'=>16,'maxlength'=>16)); ?>
                <?php echo $form->error($user,'Password'); ?>
        </div>
        <div class="row">
                <?php echo $form->labelEx($user,'E_Mail'); ?>
                <?php echo $form->textField($user,'E_Mail',array('size'=>50,'maxlength'=>50)); ?>
                <?php echo $form->error($user,'E_Mail'); ?>
        </div>
        <div class="row">
                <?php echo $form->labelEx($user,'Country'); ?>
                <?php echo $form->textField($user,'Country',array('size'=>3,'maxlength'=>3)); ?>
                <?php echo $form->error($user,'Country'); ?>
        </div>
        <div class="row buttons">
                <?php echo CHtml::submitButton($user->isNewRecord ? 'Create' : 'Save'); ?>
        </div>
<?php $this->endWidget(); ?>
</div><!-- form -->

DB中有4个表。。它们是（user、gunwuser、game、cash）。此表单用于用户表，gunwuser将拥有与用户表单中相同的数据，但并不是所有保存在表单上的数据都被请求。。

这是我的控制器：

public function actionCreate()
        {
                $user = new User;
                $gunwcuser =new Gunwcuser;
                $game = new Game;
                $cash = new Cash;
                // Uncomment the following line if AJAX validation is needed
                // $this->performAjaxValidation($model);
                $auth = 1;
                $time = '0000-00-00 00:00:00';
                if(isset($_POST['User']))
                {

                        // Set data column in DB before saving
                        $user->Status = '1';
                        $user->MuteTime = $time;
                        $user->RestrictTime = $time;
                        $user->Authority = $auth;
                        $user->User_Level = '1';
                        $user->Authority2 = $auth;
                        $user->attributes=$_POST['User'];
                        $_POST['Gunwcuser'] = $_POST['User'];
                        $gunwcuser->Status = '1';
                        $gunwcuser->MuteTime = $time;
                        $gunwcuser->RestrictTime = $time;
                        $gunwcuser->Authority = $auth;
                        $gunwcuser->User_Level = '1';
                        $gunwcuser->Authority2 = $auth;
                        $gunwcuser->AuthorityBackup = $auth;
                        $gunwcuser->attributes=$_POST['Gunwcuser'];
                        $_POST['Game'] = $_POST['User'];

                        if($user->save())
                                $this->redirect(array('view','id'=>$user->Id));
                }
                $this->render('create',array(
                        'user'=>$user, 'gunwcuser'=>$gunwcuser, 'game'=>$game, 'cash'=>$cash,
                ));
        }

我试图将属性从user复制到gunwuser，但当我保存来自user的数据时，我会检查DB，看看gunwuser是否也保存了，但没有保存。。

游戏桌上也有一些数据是一样的，但大多数数据都会不同，就像现金一样。。

常见数据为（id、用户名、昵称、性别、电子邮件、国家/地区、密码）。。

有人能告诉我如何将数据保存在同一表单的不同表中吗？同时保存不同的数据