Association Collection Create Method Failing

I was unable to duplicate this issue on edge Rails:

➜  rails_bugs  ruby ../rails/bin/rails has_many_create --dev
...
➜  rails_bugs  cd has_many_create 
➜  has_many_create  ruby ../../rails/bin/rails g model post title:string
...
➜  has_many_create  ruby ../../rails/bin/rails g model vote positive:boolean post_id:integer
...
➜  has_many_create  rake db:migrate
(in /Users/dtrasbo/code/rails_bugs/has_many_create)
...
➜  has_many_create  ruby ../../rails/bin/rails c
Loading development environment (Rails 3.0.0.beta3)
ruby-1.8.7-p249 > p = Post.create(:title => 'Foo')
 => #<Post id: 1, title: "Foo", created_at: "2010-04-15 11:08:41", updated_at: "2010-04-15 11:08:41"> 
ruby-1.8.7-p249 > p.vote(:positive => false)
 => #<Vote id: 1, positive: false, post_id: 1, created_at: "2010-04-15 11:08:48", updated_at: "2010-04-15 11:08:48">

class Post < ActiveRecord::Base
  has_many :votes

  def vote(attributes)
    vote = votes.create(attributes)
    vote if vote.valid?
  end
end

class Vote < ActiveRecord::Base
  belongs_to :post
end

My guess is that this issue is caused by missing associations or foreign keys, e.g. Though I haven't tested to see if this issue exists in 2.3.5 I think this ticket can be marked as invalid - I've never had issues similar to the one described.

Do not have a method for creating this, use the built-in helpers:

post.votes.create(attrs)

Not a Rails bug.