Could not find devise mapping for path "/sessions/user" devise 登录错误

Question

最近几天很郁闷。

我有一个安装了 Devise 的 Rails 应用程序，我在其中生成了一个新用户 model 并且还生成了 Devise 视图。

当我在填写 email 和密码字段后单击“登录”时尝试以现有用户身份登录时，会发生这种情况：

AbstractController::ActionNotFound - Could not find devise mapping for path "/sessions/user".
This may happen for two reasons:

1) You forgot to wrap your route inside the scope block. For example:

  devise_scope :user do
    get "/some/route" => "some_devise_controller"
  end

2) You are testing a Devise controller bypassing the router.
   If so, you can explicitly tell Devise which mapping to use:

   @request.env["devise.mapping"] = Devise.mappings[:user]

:
  devise (3.2.4) app/controllers/devise_controller.rb:84:in `unknown_action!'
  devise (3.2.4) app/controllers/devise_controller.rb:59:in `assert_is_devise_resource!'
  devise (3.2.4) app/controllers/devise_controller.rb:97:in `require_no_authentication'
  activesupport (4.0.4) lib/active_support/callbacks.rb:397:in `_run__1955514966561508052__process_action__callbacks'
  activesupport (4.0.4) lib/active_support/callbacks.rb:80:in `run_callbacks'
  actionpack (4.0.4) lib/abstract_controller/callbacks.rb:17:in `process_action'
  actionpack (4.0.4) lib/action_controller/metal/rescue.rb:29:in `process_action'
  actionpack (4.0.4) lib/action_controller/metal/instrumentation.rb:31:in `block in process_action'
  activesupport (4.0.4) lib/active_support/notifications.rb:159:in `block in instrument'
  activesupport (4.0.4) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
  activesupport (4.0.4) lib/active_support/notifications.rb:159:in `instrument'
  actionpack (4.0.4) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
  actionpack (4.0.4) lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
  activerecord (4.0.4) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
  actionpack (4.0.4) lib/abstract_controller/base.rb:136:in `process'
  actionpack (4.0.4) lib/abstract_controller/rendering.rb:44:in `process'
  actionpack (4.0.4) lib/action_controller/metal.rb:195:in `dispatch'
  actionpack (4.0.4) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
  actionpack (4.0.4) lib/action_controller/metal.rb:231:in `block in action'
  actionpack (4.0.4) lib/action_dispatch/routing/route_set.rb:80:in `dispatch'
  actionpack (4.0.4) lib/action_dispatch/routing/route_set.rb:48:in `call'
  actionpack (4.0.4) lib/action_dispatch/journey/router.rb:71:in `block in call'
  actionpack (4.0.4) lib/action_dispatch/journey/router.rb:59:in `call'
  actionpack (4.0.4) lib/action_dispatch/routing/route_set.rb:674:in `call'
  warden (1.2.3) lib/warden/manager.rb:35:in `block in call'
  warden (1.2.3) lib/warden/manager.rb:34:in `call'
  rack (1.5.2) lib/rack/etag.rb:23:in `call'
  rack (1.5.2) lib/rack/conditionalget.rb:35:in `call'
  rack (1.5.2) lib/rack/head.rb:11:in `call'
  actionpack (4.0.4) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
  actionpack (4.0.4) lib/action_dispatch/middleware/flash.rb:241:in `call'
  rack (1.5.2) lib/rack/session/abstract/id.rb:225:in `context'
  rack (1.5.2) lib/rack/session/abstract/id.rb:220:in `call'
  actionpack (4.0.4) lib/action_dispatch/middleware/cookies.rb:486:in `call'
  activerecord (4.0.4) lib/active_record/query_cache.rb:36:in `call'
  activerecord (4.0.4) lib/active_record/connection_adapters/abstract/connection_pool.rb:626:in `call'
  activerecord (4.0.4) lib/active_record/migration.rb:373:in `call'
  actionpack (4.0.4) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
  activesupport (4.0.4) lib/active_support/callbacks.rb:373:in `_run__2142997860843545523__call__callbacks'
  activesupport (4.0.4) lib/active_support/callbacks.rb:80:in `run_callbacks'
  actionpack (4.0.4) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
  actionpack (4.0.4) lib/action_dispatch/middleware/reloader.rb:64:in `call'
  actionpack (4.0.4) lib/action_dispatch/middleware/remote_ip.rb:76:in `call'
  better_errors (1.1.0) lib/better_errors/middleware.rb:84:in `protected_app_call'
  better_errors (1.1.0) lib/better_errors/middleware.rb:79:in `better_errors_call'
  better_errors (1.1.0) lib/better_errors/middleware.rb:56:in `call'
  actionpack (4.0.4) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
  actionpack (4.0.4) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
  railties (4.0.4) lib/rails/rack/logger.rb:38:in `call_app'
  railties (4.0.4) lib/rails/rack/logger.rb:20:in `block in call'
  activesupport (4.0.4) lib/active_support/tagged_logging.rb:68:in `block in tagged'
  activesupport (4.0.4) lib/active_support/tagged_logging.rb:26:in `tagged'
  activesupport (4.0.4) lib/active_support/tagged_logging.rb:68:in `tagged'
  railties (4.0.4) lib/rails/rack/logger.rb:20:in `call'
  quiet_assets (1.0.2) lib/quiet_assets.rb:18:in `call_with_quiet_assets'
  actionpack (4.0.4) lib/action_dispatch/middleware/request_id.rb:21:in `call'
  rack (1.5.2) lib/rack/methodoverride.rb:21:in `call'
  rack (1.5.2) lib/rack/runtime.rb:17:in `call'
  activesupport (4.0.4) lib/active_support/cache/strategy/local_cache.rb:83:in `call'
  rack (1.5.2) lib/rack/lock.rb:17:in `call'
  actionpack (4.0.4) lib/action_dispatch/middleware/static.rb:64:in `call'
  rack (1.5.2) lib/rack/sendfile.rb:112:in `call'
  railties (4.0.4) lib/rails/engine.rb:511:in `call'
  railties (4.0.4) lib/rails/application.rb:97:in `call'
  rack (1.5.2) lib/rack/lock.rb:17:in `call'
  rack (1.5.2) lib/rack/content_length.rb:14:in `call'
  rack (1.5.2) lib/rack/handler/webrick.rb:60:in `service'
  /Users/AaronWilliamson/.rubies/ruby-2.1.0/lib/ruby/2.1.0/webrick/httpserver.rb:138:in `service'
  /Users/AaronWilliamson/.rubies/ruby-2.1.0/lib/ruby/2.1.0/webrick/httpserver.rb:94:in `run'
  /Users/AaronWilliamson/.rubies/ruby-2.1.0/lib/ruby/2.1.0/webrick/server.rb:295:in `block in start_thread'

问题是，当我注册为新用户时，一切正常。 我可以填写相应的字段，单击“注册”，它会通知我我已成功登录并将我重定向到根目录 URL，显示用户已登录。该错误仅在我尝试登录时发生。

这是我的路线：

Ripelist::Application.routes.draw do
  devise_for :users, path_names: { sign_in: 'login', sign_out: 'logout', sign_up: 'signup' }
  root to: 'listings#index'
  match '/sessions/user', to: 'devise/sessions#create', via: :post

  resources :users
  resources :listings
  resources :categories
  resources :sessions
end

有人可以帮忙吗？

Answer 1

如果您使用命名空间路由来声明devise_scope有点不同，请小心：

namespace :api, defaults: {format: 'json'} do 
  namespace :v1 do 
    devise_scope :api_v1_user do
      ...
    end
  end
end

Answer 2

在您的routes.rb文件中，尝试将您的路由包装在范围块内，如错误消息所示。 这是一个例子：

devise_scope :user do
   get "signup", to: "devise/registrations#new"
   get "login", to: "devise/sessions#new"
   get "logout", to: "devise/sessions#destroy"
end

这将为您提供精美的路线。

顺便说一句，如果你使用Rails 4，摆脱匹配方法。 你需要指定HTTP动词。

---

OBSOLETE老回答：

（下面是旧的过时版本的代码，显示供参考。使用上面的代码。）

devise_for :users, path_names: { sign_in: 'login', sign_out: 'logout', sign_up: 'signup' }

和

match '/sessions/user', to: 'devise/sessions#create', via: :post

Answer 3

如果devise_scope传递的是多个范围而不是单个范围，则会出现此错误（ AbstractController::ActionNotFound - Could not find devise mapping for path ）。

devise_for方法采用复数形式的模型范围（即：用户），而devise_scope采用单数形式（即:user ）。

从设计文件（ http://www.rubydoc.info/github/plataformatec/devise/ActionDispatch%2FRouting%2FMapper%3Adevise_scope ）：

还要注意'devise_scope'和'as'使用名词的单数形式，其他设计路线命令期望复数形式。 这将是一个很好的工作实例。

 devise_scope :user do get "/some/route" => "some_devise_controller" end devise_for :users 

Answer 4

错误告诉你：

devise_scope :user do
  match '/sessions/user', to: 'devise/sessions#create', via: :post
end

你试过吗？

Answer 5

devise_scope :user do
  # add any route which is giving above error message
end 

Answer 6

  devise_scope :user do
    get '/users/confirmation/phone/:token', to: 'users/confirmations#phone', as: :confirmation_phone
  end