class Draft < ActiveRecord::Base NEW_TOPIC = 'new_topic' NEW_PRIVATE_MESSAGE = 'new_private_message' EXISTING_TOPIC = 'topic_' def self.set(user, key, sequence, data) d = find_draft(user,key) if d return if d.sequence > sequence d.update_columns(data: data, sequence: sequence) else Draft.create!(user_id: user.id, draft_key: key, data: data, sequence: sequence) end end def self.get(user, key, sequence) d = find_draft(user,key) if d && d.sequence == sequence d.data end end def self.clear(user, key, sequence) d = find_draft(user,key) if d && d.sequence <= sequence d.destroy end end protected def self.find_draft(user, key) if user.is_a?(User) find_by(user_id: user.id, draft_key: key) else find_by(user_id: user, draft_key: key) end end end # == Schema Information # # Table name: drafts # # id :integer not null, primary key # user_id :integer not null # draft_key :string(255) not null # data :text not null # created_at :datetime not null # updated_at :datetime not null # sequence :integer default(0), not null # # Indexes # # index_drafts_on_user_id_and_draft_key (user_id,draft_key) #