set the username and id according to the facebook

Yii 1.1 General Discussion
1

I ve been developing a facebook application and after the authentication i want to set the username and id according to the facebook username and id. As i am new to Yii I dont’t have much idea about how to do it. Though when i tried to set the user id in my UserIdentity class, it gave an error saying that

[font="Courier New"][size="4"]Property "UserIdentity.id" is read only.[/size][/font]

is there any other way to do it?