socialforge/app/models/invite_list.rb

class InviteList < ActiveRecord::Base
  attr_accessible :project_id, :user_id, :mail
  belongs_to :user
  belongs_to :project

  # 用户拒绝邀请后，删除记录
  def self.delete_inviter(userid, projectid)
    @inviters = AppliedProject.where("user_id = ? and project_id = ?", userid, projectid)
    @inviters.each do |inviter|
      inviter.destroy
    end
  end
end