Yii不会加载模型

Question

I am unable to load a model in my NewController . In other controllers I can perfectly call this line:

$vid = Video::model()->findByPk($id);

and it will get me the right model.

However in this controller: NewController.php it doesn't work.

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

    $vid = Video::model()->findByPk($id);

    if(isset($vid)) // Check if it works.
       $this->render('update',array('model'=>$model, 'vid'=>$vid));
}

Does anyone have any suggestions why it doesn't work?

$id is valid and so is $model , I am going insane with this not working when it should.

---

An example that works UserController.php :

public function actionView()
{
    if(isset($_GET['user']))
        $username = $_GET['user'];          
    else 
        $username = Yii::app()->user->name;

    $user = User::model()->find("username=:username",array(':username'=>$username));
    $saveQ = SavedQuery::model()->findAll("FK_userid=:id", array(':id'=>$user->id));

    $vid = Video::model()->findByPk($user->id);
    $this->render('View', array('user'=>$user, 'vid'=>$vid, 'saveQ'=>$saveQ));
}

Answer 1

You don't need make this: $vid = Video::model()->findByPk($id);

The actionUpdate load the data for update, the parameter $id seek the record to update

Answer 2

you are saying "The ID is the foreign key for the video. The integrity of the database is correct too." but $vid is taken using the primary key

$vid = Video::model()->findByPk($id);

So you should probably have

$vid = Video::model()->findAll("FK_XXXX=:id", array(':id'=>$id));

Answer 3

you need comment this:

$model=$this->loadModel($id);

and try it.