discourse/db/migrate/20141020153415_add_public_version_to_posts.rb

class AddPublicVersionToPosts < ActiveRecord::Migration[4.2]
  def up
    add_column :posts, :public_version, :integer, null: false, default: 1

    execute <<-SQL
      UPDATE posts
         SET public_version = 1 + (SELECT COUNT(*) FROM post_revisions pr WHERE post_id = posts.id AND pr.hidden = 'f')
       WHERE public_version <> 1 + (SELECT COUNT(*) FROM post_revisions pr WHERE post_id = posts.id AND pr.hidden = 'f')
    SQL
  end

  def down
    remove_column :posts, :public_version
  end
end
Fix all the errors to get our tests green on Rails 5.1. 2017-08-31 12:06:56 +08:00			`class AddPublicVersionToPosts < ActiveRecord::Migration[4.2]`
LOTS of changes to properly handle post/topic revisions FIX: history revision can now properly be hidden FIX: PostRevision serializer is now entirely dynamic to properly handle hidden revisions FIX: default history modal to "side by side" view on mobile FIX: properly hiden which revision has been hidden UX: inline category/user/wiki/post_type changes with the revision details FEATURE: new '/posts/:post_id/revisions/latest' endpoint to retrieve latest revision UX: do not show the hide/show revision button on mobile (no room for them) UX: remove CSS transitions on the buttons in the history modal FIX: PostRevisor now handles all the changes that might create new revisions FIX: PostRevision.ensure_consistency! was wrong due to off by 1 mistake... refactored topic's callbacks for better readability extracted 'PostRevisionGuardian' 2014-10-27 22:06:43 +01:00			`def up`
			`add_column :posts, :public_version, :integer, null: false, default: 1`

			`execute <<-SQL`
			`UPDATE posts`
			`SET public_version = 1 + (SELECT COUNT(*) FROM post_revisions pr WHERE post_id = posts.id AND pr.hidden = 'f')`
			`WHERE public_version <> 1 + (SELECT COUNT(*) FROM post_revisions pr WHERE post_id = posts.id AND pr.hidden = 'f')`
			`SQL`
			`end`

			`def down`
			`remove_column :posts, :public_version`
			`end`
			`end`