如何在行为配置中使用模型属性值Yii

Question

I want create ImageBehavior for uploading and saving images. My behavior have two fields: imagePath and imageField. In my model i'm wrote:

public function behaviors(){
    return array(
        'imageBehavior' => array(
            'class' => 'ImageBehavior',
            'imagePath' => 'images/avatar-pics/'.$this->user->username,
            'imageField' => 'avatar',
),
);
}

but this doesn't worked - i receive path -

images/avatar-pics//image.png

What a solution? Create in behavior field imageFolder and add to config 'imageFolder' => 'user->username'? Thanks.

Answer 1

Sorry for answering own question, but almost two years later build correct vision to this issue:

1) don't use line

'images/avatar-pics/'.$this->user->username

in your behavoir - it throws a notice "Trying to get property of non-object" - good application doesn't thows notices and warnings.

2) all you need is use

'images/avatar-pics/' . CHtml::value($this, 'user.username') 

instead. If $this->user is null, value method returns null, so be sure that you have related user to your model.