devise里的devise_for方法

routes.rb 里有

<!-- lang: ruby -->
  devise_for :users, path: '',
path_names:   { sign_in: :login, sign_out: :logout, sign_up: :sign_up },
controllers:  { omniauth_callbacks: :omniauth_callbacks, passwords: :passwords }

一行routes.rb里的代码

<!-- lang: ruby -->
devise_for :users

意味着，你能够有如下连接

<!-- lang: ruby -->
# Session routes for Authenticatable (default)
 new_user_session GET    /users/sign_in                    {:controller=>"devise/sessions", :action=>"new"}
     user_session POST   /users/sign_in                    {:controller=>"devise/sessions", :action=>"create"}
 destroy_user_session DELETE /users/sign_out                   {:controller=>"devise/sessions", :action=>"destroy"}

# Password routes for Recoverable, if User model has :recoverable configured
  new_user_password GET    /users/password/new(.:format)     {:controller=>"devise/passwords", :action=>"new"}
  edit_user_password GET    /users/password/edit(.:format)    {:controller=>"devise/passwords", :action=>"edit"}
    user_password PUT    /users/password(.:format)         {:controller=>"devise/passwords", :action=>"update"}
                  POST   /users/password(.:format)         {:controller=>"devise/passwords", :action=>"create"}

# Confirmation routes for Confirmable, if User model has :confirmable configured
  new_user_confirmation GET    /users/confirmation/new(.:format) {:controller=>"devise/confirmations", :action=>"new"}
  user_confirmation GET    /users/confirmation(.:format)     {:controller=>"devise/confirmations", :action=>"show"}
                  POST   /users/confirmation(.:format)     {:controller=>"devise/confirmations", :action=>"create"}

其中 devise 做用为 namespace, 而controller有 sessions, passwords, confirmations, 后面天然就是各个 actions 了...

相比默认的 devise_for 说说咱们用到的参数：

• :path => allows you to setup path name that will be used, as rails routes does. The following route configuration would setup your route as /accounts instead of /users:

devise_for :users, :path => 'accounts'

咱们的 :path => '' 说明 /sign_in, /password/new, /confirmation/new 等都升了一级，原来二级连接变为一级，原来三级连接变为二级。

• :path_names => configure different path names to overwrite defaults :sign_in, :sign_out, :sign_up, :password, :confirmation, :unlock.

devise_for :users, path_names: {
  sign_in: 'login', sign_out: 'logout',
  password: 'secret', confirmation: 'verification',
  registration: 'register', edit: 'edit/profile'
}

给 sign_in, sign_out 等换名字，这就至关于更换(alise) action 的名字，但内容是不变的。

• :controllers => the controller which should be used. All routes by default points to Devise controllers. However, if you want them to point to custom controller, you should do:

devise_for :users, :controllers => { :sessions => "users/sessions" }

原来咱们的 controller 是由 devise namespace和sessions, passwords, confirmations controller构成；若是咱们想要从新实现，通常都不会再使用这些构成方式，而是用本身便于理解的来作。

扩展一下： 使用 devise 后 /users/* 用到3个controller，它们是：sessions, passwords, registrations

new_user_session GET      /users/sign_in(.:format)               devise/sessions#new
        user_session POST     /users/sign_in(.:format)               devise/sessions#create
destroy_user_session DELETE   /users/sign_out(.:format)              devise/sessions#destroy
       user_password POST     /users/password(.:format)              devise/passwords#create
   new_user_password GET      /users/password/new(.:format)          devise/passwords#new
  edit_user_password GET      /users/password/edit(.:format)         devise/passwords#edit
                     PATCH    /users/password(.:format)              devise/passwords#update
                     PUT      /users/password(.:format)              devise/passwords#update

cancel_user_registration GET /users/cancel(.:format) devise/registrations#cancel user_registration POST /users(.:format) devise/registrations#create new_user_registration GET /users/sign_up(.:format) devise/registrations#new edit_user_registration GET /users/edit(.:format) devise/registrations#edit PATCH /users(.:format) devise/registrations#update PUT /users(.:format) devise/registrations#update DELETE /users(.:format) devise/registrations#destroy （下面两行是前面已经提到过的，不算） users GET /users(.:format) users#index user GET /users/:id(.:format) users#show

registrations: "users" 改造后

cancel_user_registration GET /users/cancel(.:format) users#cancel user_registration POST /users(.:format) users#create new_user_registration GET /users/sign_up(.:format) users#new edit_user_registration GET /users/edit(.:format) users#edit PATCH /users(.:format) users#update PUT /users(.:format) users#update DELETE /users(.:format) users#destroy （下面两行是前面已经提到过的，不算） users GET /users(.:format) users#index user GET /users/:id(.:format) users#show 咱们并非想彻底重写这里的全部 action 而是部分。那么最好的办法，就是：继承！ 继承 devise 提供的类，而后重写咱们想要的 action.... 有哪些 action ? 以咱们实际遇到的项目中，是： https://github.com/plataformatec/devise/blob/master/app/controllers/devise/registrations_controller.rb

在实践中，registrations: "users"改造后，本来 /users/* 下的请求都到 UsersController 下处理了，若是还 < ApplicationController 那么 users/sign_up 就不能用。 但咱们 < Devise::RegistrationsController 它又可用了！

因此，验证了上面说法。1，咱们指定本身的 Controller 来处理；2，继承 devise；3. 只重写咱们想定制的部分action