Combie domain with active record

I use yii2 and find that it's active record is very convenient.

But sometimes I find that we always put logic functions in active record which I think should belongs to domain.

And I have looked up some books, most of them suggest using data mapper to mapping database record to domain.

Although it is a good way to split domain and data, I don't want to waste active record feature from yii2.

I think we can make a domain extend from active record so that the database operations will in domain's parent class active record, and business logic operations will in domain:

class UserModel extends ActiveRecord{
      // do database operations
}

class UserDomain extends UserModel{
    // do domain's logic
}

I don't know is this design great? Please tell me your suggests.