require "rails/generators" require "rails/generators/rails/app/app_generator" module Rails class AppUpdater # :nodoc: class << self def invoke_from_app_generator(method) app_generator.send(method) end def app_generator @app_generator ||= begin gen = Rails::Generators::AppGenerator.new ["rails"], generator_options, destination_root: Rails.root File.exist?(Rails.root.join("config", "application.rb")) ? gen.send(:app_const) : gen.send(:valid_const?) gen end end private def generator_options options = { api: !!Rails.application.config.api_only, update: true } options[:skip_active_record] = !defined?(ActiveRecord::Railtie) options[:skip_action_mailer] = !defined?(ActionMailer::Railtie) options[:skip_action_cable] = !defined?(ActionCable::Engine) options[:skip_sprockets] = !defined?(Sprockets::Railtie) options[:skip_puma] = !defined?(Puma) options end end end end