如何在不更改原始类的情况下替换belongs_to关联

Question

I have a class that looks like this:

class Refinery::Blog::Post < ActiveRecord::Base
  belongs_to :author, class_name: '::Refinery::User', foreign_key: :user_id

  # SNIP very long class body
end

I don't want to override the whole class if I can help it, as there's a ton of behavior there that should remain intact, and many other parts of the engine reference the class by name so I can't subclass it. Is there any way using class_eval to remove or replace an existing association? I tried just redefining it like this:

Refinery::Base::Post.class_eval do
  belongs_to :author, class_name: 'MyUser', foreign_key: :user_id
end

but it doesn't seem to work.

Answer 1

Look in the initializer file, which I think is in config/initializers/refinery/blog.rb

Refinery::Blog.configure do |config|


  # If you're grafting onto an existing app, change this to your User class
   Refinery::Blog.user_class = 'MyUser'
end