mastodon/db/migrate/20170507000211_add_conversation_id_to_statuses.rb

class AddConversationIdToStatuses < ActiveRecord::Migration[5.0]
  def change
    add_column :statuses, :conversation_id, :bigint, null: true, default: nil
    add_index :statuses, :conversation_id
  end
end
Add conversation model, <ostatus:conversation /> (#3016) * Add <ostatus:conversation /> tag to Atom input/output Only uses ref attribute (not href) because href would be the alternate link that's always included also. Creates new conversation for every non-reply status. Carries over conversation for every reply. Keeps remote URIs verbatim, generates local URIs on the fly like the rest of them. * Fix conversation migration * More spec coverage for status before_create * Prevent n+1 query when generating Atom with the new conversations * Improve code style * Remove redundant local variable 2017-05-12 17:09:21 +00:00			`class AddConversationIdToStatuses < ActiveRecord::Migration[5.0]`
			`def change`
			`add_column :statuses, :conversation_id, :bigint, null: true, default: nil`
			`add_index :statuses, :conversation_id`
			`end`
			`end`