Plugin not reloading in development mode

Question

I am having a weird problem with a plugin I wrote. What is weird is that I have one other plugin that opens various ActiveRecord classes and it has no problems auto-reloading.

In the plugins init.rb file I have

User.class_eval do
  has_one :reputation
  include Karma 
  alias :rep :reputation
end

If I run it in production mode or in rails console there are no issues. When I run it in development it does load it once, but never again unless I restart the server.

I couldn't find anything special in the other plugin I am using(acts_as_readable) and it opens User in the same manner.

---

Edit:

I did:

ActiveRecord::Base.class_eval do
  class << self
    def has_karma_values
      has_one :reputation
      alias :rep :reputation
    end
  end
end

in the plugiin's init.rb file and did

class User < ActiveRecord::Base
...
has_karma_values
...
end

And get the same error about has_karma_values not existing. The plugin hasn't been loaded at this point.

What is confusing is that acts-as-readable has no issues at all with

User.class_eval do
  has_many :readings
end

ActiveRecord::Base.send :include, ActiveRecord::Acts::Readable

but yet mine does.

Here is my complete init.rb file

require 'reputation'
require 'karma_name'
require 'karma_tag'
require 'karma_title'
require 'acts_as_karmable'
require 'karma'
require File.expand_path('../lib/generators/karma_generator', __FILE__)

KarmaTitle.setup 'Default'

ActiveRecord::Base.class_eval do
  class << self
    def has_karma_values
      has_one :reputation
      alias :rep :reputation
    end
  end
end

ActiveRecord::Base.send :include, ActiveRecord::Acts::Karmable

Here is the error /home/david/apps/ruby/lib/ruby/gems/1.9.1/gems/activerecord-3.0.9/lib/active_record/base.rb:1014:inmethod_missing': undefined local variable or method has_karma_values' for #<Class:0x9ad1b24> (NameError)

Answer 1

This should work:

# plugin init.rb
Rails.configuration.to_prepare do
  User.class_eval do
    has_one :reputation
    include Karma 
    alias :rep :reputation
  end
end