anton effendi wrote:
> Thank you..
> Your ide must use 3 model.. 1 model -> User, 1 model -> for admin, 1 
> model -> for user
> is true?
> But I want use 1 model for admin and user..
>  so if I call "user = User.create" in admin and in user, photo will 
> upload.. with different size thumbnail.
> 
> Can u explain with code?? thank you very much

class User < ActiveRecord::Base
   # Database table "users", having string field "type"
   # Put methods common to all users here
end

class OrdinaryUser < User
   has_attachment :thumbnails => ...
end

class Admin < User
   has_attachment :thumbnails => ...
end

user = OrdinaryUser.create!
admin = Admin.create!

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