app/models/folder.rb
# == Schema Information
#
# Table name: folders
#
# id :integer not null, primary key
# member_id :integer default(0), not null
# name :string(255) not null
# created_on :datetime not null
# updated_on :datetime not null
#
class Folder < ActiveRecord::Base
belongs_to :member, optional: true
has_many :subscriptions, dependent: :nullify
has_many :feeds, through: :subscriptions
end