["groups", "groups_users", "members", "questions", "users", "votes", "schema_migrations"]

Groups_Users
Groups_User
GroupsUsers
GroupsUser

class Group < ActiveRecord::Base
  has_and_belongs_to_many :users
end

class User < ActiveRecord::Base
  has_and_belongs_to_many :groups
end

class GroupUser < ActiveRecord::Base
  self.table_name = "groups_users"
  belongs_to :user
  belongs_to :group
end

class Group < ActiveRecord::Base
  has_many :group_users
  has_many :users, :through => :group_users
end


class User< ActiveRecord::Base
  has_many :group_users
  has_many :groups, :through => :group_users
end

class GroupsUsers < ActiveRecord::Base
end