Redirect Issue

public function actionUpdate($id)
    {
            $model=$this->loadModel($id);
            if(isset($_POST['Category']))
 	           {
     	               $model->attributes=$_POST['Category'];
     	                           if($model->save())
         	                               $this->redirect(array('index'));
    	}

             	               $this->render('_form',array(
                                    	'model'=>$model,
             	               ));
    }

	public function actionCreate()
	{
    	$model=new Category;
    	if(isset($_POST['Category']))
    	{
        	$model->attributes=$_POST['Category'];
        	if($model->validate())
            	if($model->save())
                	$this->redirect(array('index'));
    	}
    	$this->render('_form',array('model'=>$model));
	}