Yii，在不使用隐藏字段的情况下设置模型值

I want to set the value of field in my model. The field (source) is in the database but it doesn't have a field on the form to capture the data. I want to set the value the field without creating a hidden form field. Is that possible?

Thanks!

//in controller
public function actionTest()
                {
        $model=new TestForm();
        $src = 'hello';  
        $model->source($src);
        echo $model->source; // hello
        $this->render('_form',array('model'=>$model));    
                }

The form is then submitted and of course $source is not in the _POST because there is no field to capture $source

However I have set the value of $model->source but this value doesn't seem to persist because it is not saved in the database.

The only way to solve this i have found is to use a hidden field and pass in the value of $source to the form.

Is there a way to set $model->source and for this value to go in the database without going via the form?

If you need to set the value of $source when displaying the form (because e.g. that's when you have the required data in hand) then create a hidden input control. There's nothing wrong about it; you want to persist a non-default value in your model, and a hidden input element is the way to do that.

Well a form has to post somewhere and in Yii it's advised to post back to the same page.

I would do this way:

public function actionUpdate($id)
    {
        $model=$this->loadModel($id);

        // Uncomment the following line if AJAX validation is needed
        // $this->performAjaxValidation($model);

        if(isset($_POST['NotificationLog']))
        {
            $model->attributes=$_POST['NotificationLog'];
            if($model->save())
                $this->redirect(array('admin'));
        } else {
                  // set defaults
                  $model->source = 'hello';
            }

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

Do something like this in your rules function in the model class:

public function rules() {

    return array(
        .
        .
        .
        array('source', 'default', 'value' => 'hello'),
    );
}