Using CGridView to show another models attributes

Before asking this question I want to tell that I had asked this question in stackoverflow.com but not got any results so I am asking here.In Yii I am doing multimodel.My database is something like this


 +++++ Group ++++++

 id

 name


 +++++ Member ++++++

 id

 group_id

 firstname

 lastname

 membersince

In Group controller I want to show Member’s attributes.Everything is working fine but when I am using manage option from the menu it is showing the attributes for both models but in two different grid-view.I want to show both models attributes in a single grid-view. The code for Member controller is like this




  public function actionAdmin()

  {

    $model=new Group('search');

    $model->unsetAttributes();  // clear any default values

    if(isset($_GET['Group']))

    {

      $model->attributes=$_GET['Group'];

    }

    $member=new Member('search');

    $member->unsetAttributes();  // clear any default values

    if(isset($_GET['Member']))

    {

      $model->attributes=$_GET['Member'];

    }

    $this->render('admin',array(

      'model'=>$model,

      'member'=>$member,

    ));

  }



for View in Group admin code is like this




 <?php $this->widget('zii.widgets.grid.CGridView', array(

  'id'=>'member-grid',

  'dataProvider'=>$model->search(),

  'filter'=>$model,

  'columns'=>array(

    'id',

    'name',

    array(

      'class'=>'CButtonColumn',

    ),

  ),

));

    $this->widget('zii.widgets.grid.CGridView', array(

                  'id'=>'member-grid',

                  'dataProvider'=>$member->search(),

                  'filter'=>$member,

                  'columns'=>array(

                    'firstname',

                    'lastname',

                    array(

                      'class'=>'CButtonColumn',

                    ),                    

                            ),

                 ));



Here I have used CGridView for two times to show models for both attributes. So can someone tell me how to show models in a single CGridView.Any help and suggestions will be highly appriciable.