require_dependency "discourse_diff" class PostRevision < ActiveRecord::Base belongs_to :post belongs_to :user serialize :modifications, Hash after_create :create_notification def self.ensure_consistency! # 1 - fix the numbers DB.exec <<-SQL UPDATE post_revisions SET number = pr.rank FROM (SELECT id, 1 + ROW_NUMBER() OVER (PARTITION BY post_id ORDER BY number, created_at, updated_at) AS rank FROM post_revisions) AS pr WHERE post_revisions.id = pr.id AND post_revisions.number <> pr.rank SQL # 2 - fix the versions on the posts DB.exec <<-SQL UPDATE posts SET version = 1 + (SELECT COUNT(*) FROM post_revisions WHERE post_id = posts.id), public_version = 1 + (SELECT COUNT(*) FROM post_revisions pr WHERE post_id = posts.id AND pr.hidden = 'f') WHERE version <> 1 + (SELECT COUNT(*) FROM post_revisions WHERE post_id = posts.id) OR public_version <> 1 + (SELECT COUNT(*) FROM post_revisions pr WHERE post_id = posts.id AND pr.hidden = 'f') SQL end def hide! update_column(:hidden, true) end def show! update_column(:hidden, false) end def create_notification PostActionNotifier.after_create_post_revision(self) end end # == Schema Information # # Table name: post_revisions # # id :integer not null, primary key # user_id :integer # post_id :integer # modifications :text # number :integer # created_at :datetime not null # updated_at :datetime not null # hidden :boolean default(FALSE), not null # # Indexes # # index_post_revisions_on_post_id (post_id) # index_post_revisions_on_post_id_and_number (post_id,number) #