class MigrateAlreadyImportedProjects < ActiveRecord::Migration def up Project.where(imported: true).update_all(import_status: "finished") Project.where(imported: false).update_all(import_status: "none") remove_column :projects, :imported end def down add_column :projects, :imported, :boolean, default: false Project.where(import_status: 'finished').update_all(imported: true) end end