Merge pull request #23478 from vipulnsward/23470-pass-api-in-update-generator

Pass api only option to rails rails:update task to update only based on api Apps

railties/lib/rails/tasks/framework.rake

@@ -45,7 +45,7 @@ namespace :rails do
         @app_generator ||= begin
           require 'rails/generators'
           require 'rails/generators/rails/app/app_generator'
-          gen = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true },
+          gen = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true, api: !!Rails.application.config.api_only },
             destination_root: Rails.root
           File.exist?(Rails.root.join("config", "application.rb")) ?
             gen.send(:app_const) : gen.send(:valid_const?)