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moebooru/db/migrate/038_favorites_add_created_at.rb
2018-03-10 18:15:56 +09:00

11 lines
364 B
Ruby

class FavoritesAddCreatedAt < ActiveRecord::Migration[5.1]
def self.up
execute "alter table favorites add column created_at timestamp not null default now()"
execute "update favorites set created_at = (select created_at from posts where id = favorites.post_id)"
end
def self.down
execute "alter table favorites drop column created_at"
end
end