Guide Targets:

• How to interpret the code in config/routes.rb?
  • http-verb + url to match specified controller and action.
• How to construct routes using resourceful or match way?
  • use resourceful style routes is recommend in Rails.
  • resources, single resource, nested resources, namespace, etc.
• How to declare routes parameters which passed onto controller action?
  • params are from url, post body and routing.
• How to auto create path and urls using route helpers?
  • auto generate _path and _url helpers.
• Advanced Techniques: constrains and mounting Rack endpoints.

My Notes

Helpers

• play in console with app
• app.magazine_ad_path(magazine, ad)
• app.magazine_ad_url(magazine, ad)
• app.url_for [magazine, ad] # call _url
• app.root_path

Resourceful Routes

• resources :photos
• resource :profile
• resources :photos, :books

Options

• as specify routes name
• path specify routes url path
• module specify controller module
• namespace both change in name, path and module
• shallow for nested resource, only nested index, new, create