Return to Answer

Since rails 4.1, if you want to rename your application, the only two files you need to modify are config/application.rb:

require File.expand_path('../boot', __FILE__) require 'rails/all' # Require the gems listed in Gemfile, including any gems # you've limited to :test, :development, or :production. Bundler.require(*Rails.groups) module YourApplicationName # <-- rename it here class Application < Rails::Application ... end end 

and config/initializers/session_store.rb (optional):

# Be sure to restart your server when you modify this file. Rails.application.config.session_store :cookie_store, key: '_your_application_name_session' # <-- rename the key 

For Rails 4.0.x you can use the rename gem and execute the following command:

rails g rename:app_to New-Name 

Since rails 4.1.x, if you want to rename your application, the only two files you need to modify are config/application.rb:

require File.expand_path('../boot', __FILE__) require 'rails/all' # Require the gems listed in Gemfile, including any gems # you've limited to :test, :development, or :production. Bundler.require(*Rails.groups) module YourApplicationName # <-- rename it here class Application < Rails::Application ... end end 

and config/initializers/session_store.rb (optional):

# Be sure to restart your server when you modify this file. Rails.application.config.session_store :cookie_store, key: '_your_application_name_session' # <-- rename the key 

For Rails 4.0.x you can use the rename gem and execute the following command:

rails g rename:app_to New-Name 

This will update the necessary files for you:

old/ (master) › rails g rename:app_to new Search and replace module in to... gsub config.ru gsub Gemfile gsub Gemfile.lock gsub Rakefile gsub README.md gsub config/application.rb gsub config/boot.rb gsub config/environment.rb gsub config/environments/development.rb gsub config/environments/production.rb gsub config/environments/test.rb gsub config/initializers/backtrace_silencers.rb gsub config/initializers/filter_parameter_logging.rb gsub config/initializers/inflections.rb gsub config/initializers/load_class_extensions.rb gsub config/initializers/mime_types.rb gsub config/initializers/secret_token.rb gsub config/initializers/session_store.rb gsub config/initializers/update.rb gsub config/initializers/wrap_parameters.rb gsub config/routes.rb gsub config/initializers/session_store.rb Renaming references... Renaming directory...Done! New application path is '/Users/username/code/new' 

Update: This change was introduced in Rails 4.1, not Rails 4.0!

Since rails 4.1, if you want to rename your application, the only two files you need to modify are config/application.rb:

require File.expand_path('../boot', __FILE__) require 'rails/all' # Require the gems listed in Gemfile, including any gems # you've limited to :test, :development, or :production. Bundler.require(*Rails.groups) module YourApplicationName # <-- rename it here class Application < Rails::Application ... end end 

and config/initializers/session_store.rb (optional):

# Be sure to restart your server when you modify this file. Rails.application.config.session_store :cookie_store, key: '_your_application_name_session' # <-- rename the key 

Since rails 4.1, if you want to rename your application, the only two files you need to modify are config/application.rb:

require File.expand_path('../boot', __FILE__) require 'rails/all' # Require the gems listed in Gemfile, including any gems # you've limited to :test, :development, or :production. Bundler.require(*Rails.groups) module YourApplicationName # <-- rename it here class Application < Rails::Application ... end end 

and config/initializers/session_store.rb (optional):

# Be sure to restart your server when you modify this file. Rails.application.config.session_store :cookie_store, key: '_your_application_name_session' # <-- rename the key 

For Rails 4.0.x you can use the rename gem and execute the following command:

rails g rename:app_to New-Name 

Since rails 4, if you want to rename your application, the only two files you need to modify are config/application.rb:

require File.expand_path('../boot', __FILE__) require 'rails/all' # Require the gems listed in Gemfile, including any gems # you've limited to :test, :development, or :production. Bundler.require(*Rails.groups) module YourApplicationName # <-- rename it here class Application < Rails::Application ... end end 

and config/initializers/session_store.rb (optional):

# Be sure to restart your server when you modify this file. Rails.application.config.session_store :cookie_store, key: '_your_application_name_session' # <-- rename the key 

Update: This change was introduced in Rails 4.1, not Rails 4.0!

Since rails 4.1, if you want to rename your application, the only two files you need to modify are config/application.rb:

require File.expand_path('../boot', __FILE__) require 'rails/all' # Require the gems listed in Gemfile, including any gems # you've limited to :test, :development, or :production. Bundler.require(*Rails.groups) module YourApplicationName # <-- rename it here class Application < Rails::Application ... end end 

and config/initializers/session_store.rb (optional):

# Be sure to restart your server when you modify this file. Rails.application.config.session_store :cookie_store, key: '_your_application_name_session' # <-- rename the key