Hi all, 
is it possible to use scope in model relationships?

example

> class Post < ActiveRecord::Base

  scope :published, where(:published, true) 

end

 

> class User < ActiveRecord::Base 

  has_many :posts 

  has_many :published_posts, class_name: 'Post' ..... here I would like to 
> use the same conditions of scope published without rewrite them


I know that I can write a method in User class instead of the has_many 
relationship, something like

> def published_post 

  return self.posts.published  

end


but in this way I can't use the include: in the to_json method

> @user.to_json(include: :published_posts)


and I can't use method: instead beacuse I have to use also the only: 
attribute to filter the attributes in the json output

Thanks to all

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