invite.rb

association proxy annoyance.rb

# AssociationProxy causes ActiveRecord#reload to re-run the finder-sql based on the association. 
  # Since we clear the invite_id on the Flatmate record when accepting an invite, this can cause difficult bugs
  # to track down -- since flatmate.reload won't work! So we eliminate the issue entirely by ensuring we are always
  # dealing with the actual target object (which reloads based on the primary key of the table) rather than 
  # potentially an AssociationProxy (which reloads based on the foreign key of the association)
  def flatmate_with_proxy_removal(reload = nil)
    r = flatmate_without_proxy_removal(reload); r && r.respond_to?(:target) ? r.target : r
  end
  alias_method_chain :flatmate, :proxy_removal