路由错误未初始化常量用户

Posted 2023-03-16

【中文标题】路由错误未初始化常量用户

【英文标题】：Routing Error uninitialized constant Users

【发布时间】：2012-11-24 00:47:51

【问题描述】：

我是 Rails 新手...我正在尝试设置 Sign in with facebook 以获取演示应用程序。我正在使用 OmniAuth 并遵循本教程

https://github.com/plataformatec/devise/wiki/OmniAuth:-Overview

重定向到 fB 时出现此错误：

   Routing Error:

    uninitialized constant Users

    Try running rake routes for more information on available routes. 

环境

Windows 7
Rails version :3.2.9.rc2
omniauth-1.1.1
devise-2.1.2

我的 routes.rb 看起来像这样：

  root :to => 'static_pages#home'
  resources :users
  get "static_pages/home"
  match '/auth/facebook' => 'omniauth#passthru'
  match '/users/auth/facebook' => 'users/omniauth_callbacks#passthru'
  devise_for :users, :controllers =>  :omniauth_callbacks => "users/omniauth_callbacks"  , :strategy_class => OmniAuth::Strategies::Facebook

devise.rb 包含：

require 'devise/orm/active_record'
require 'omniauth-facebook'

config.omniauth_path_prefix = "/users/auth"
  config.omniauth :facebook, "ABC", "XYZ",:client_options =>  :ssl =>  :verify => false   

而 OmniAuthController 包含： 即 app/controllers/omniauth_callbacks_controller.rb

class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController

  def facebook
    # You need to implement the method below in your model (e.g. app/models/user.rb)
    @user = User.find_for_facebook_oauth(request.env["omniauth.auth"], current_user)

    if @user.persisted?
      sign_in_and_redirect @user, :event => :authentication #this will throw if @user is not activated
      set_flash_message(:notice, :success, :kind => "Facebook") if is_navigational_format?
    else
      session["devise.facebook_data"] = request.env["omniauth.auth"]
      #redirect_to new_user_registration_url
      redirect_to "static_pages_home"
    end
  end 

  def passthru
    render :file => "#Rails.root/public/404.html", :status => 404, :layout => false
    # Or alternatively,
    # raise ActionController::RoutingError.new('Not Found')
  end


end

User.rb 包含的模型：

class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :token_authenticatable, :confirmable,
  # :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable 

  # Setup accessible (or protected) attributes for your model
  attr_accessible :email, :password, :password_confirmation, :remember_me
  attr_accessible :date_of_birth, :firstName, :lastName, :mailId, :phone, :provider, :uid
  devise :omniauthable

 protected


 def self.find_for_facebook_oauth(auth, signed_in_resource=nil)
    user = User.find(:provider => auth.provider, :uid => auth.uid).first
    unless user
      user = User.create(name:auth.extra.raw_info.name,
                           provider:auth.provider,
                           uid:auth.uid,
                           email:auth.info.email,
                           password:Devise.friendly_token[0,20]
                           )
    end
    user
  end  

 def self.new_with_session(params, session)
    super.tap do |user|
      if data = session["devise.facebook_data"] && session["devise.facebook_data"]["extra"]["raw_info"]
        user.email = data["email"] if user.email.blank?
      end
    end
  end

end

追踪：

于 2012-11-23 22:39:32 -0800 开始为 127.0.0.1 获取“/users/auth/facebook” (facebook) 回调阶段已启动。

开始 GET "/users/auth/facebook/callback?

state=XYZ&code=ABC" for 127.0.0.1 at 2012-11-23 22:39:33 -0800

ActionController::RoutingError (uninitialized constant Users):
  activesupport (3.2.9.rc2) lib/active_support/inflector/methods.rb:230:in `block in constantize'
  activesupport (3.2.9.rc2) lib/active_support/inflector/methods.rb:229:in `each'
  activesupport (3.2.9.rc2) lib/active_support/inflector/methods.rb:229:in `constantize'
  actionpack (3.2.9.rc2) lib/action_dispatch/routing/route_set.rb:69:in `controller_reference'
  actionpack (3.2.9.rc2) lib/action_dispatch/routing/route_set.rb:54:in `controller'
  actionpack (3.2.9.rc2) lib/action_dispatch/routing/route_set.rb:32:in `call'
  actionpack (3.2.9.rc2) lib/action_dispatch/routing/mapper.rb:42:in `call'
  journey (1.0.4) lib/journey/router.rb:68:in `block in call'
  journey (1.0.4) lib/journey/router.rb:56:in `each'
  journey (1.0.4) lib/journey/router.rb:56:in `call'
  actionpack (3.2.9.rc2) lib/action_dispatch/routing/route_set.rb:600:in `call'
  omniauth (1.1.1) lib/omniauth/strategy.rb:394:in `call_app!'
  omniauth (1.1.1) lib/omniauth/strategy.rb:356:in `callback_phase'
  omniauth-oauth2 (1.1.1) lib/omniauth/strategies/oauth2.rb:77:in `callback_phase'
  omniauth (1.1.1) lib/omniauth/strategy.rb:219:in `callback_call'
  omniauth (1.1.1) lib/omniauth/strategy.rb:175:in `call!'
  omniauth (1.1.1) lib/omniauth/strategy.rb:157:in `call'
  warden (1.2.1) lib/warden/manager.rb:35:in `block in call'
  warden (1.2.1) lib/warden/manager.rb:34:in `catch'
  warden (1.2.1) lib/warden/manager.rb:34:in `call'
  actionpack (3.2.9.rc2) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
  rack (1.4.1) lib/rack/etag.rb:23:in `call'
  rack (1.4.1) lib/rack/conditionalget.rb:25:in `call'
  actionpack (3.2.9.rc2) lib/action_dispatch/middleware/head.rb:14:in `call'
  actionpack (3.2.9.rc2) lib/action_dispatch/middleware/params_parser.rb:21:in `call'
  actionpack (3.2.9.rc2) lib/action_dispatch/middleware/flash.rb:242:in `call'
  rack (1.4.1) lib/rack/session/abstract/id.rb:205:in `context'
  rack (1.4.1) lib/rack/session/abstract/id.rb:200:in `call'
  actionpack (3.2.9.rc2) lib/action_dispatch/middleware/cookies.rb:341:in `call'
  activerecord (3.2.9.rc2) lib/active_record/query_cache.rb:64:in `call'
  activerecord (3.2.9.rc2) lib/active_record/connection_adapters/abstract/connection_pool.rb:479:in `call'
  actionpack (3.2.9.rc2) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
  activesupport (3.2.9.rc2) lib/active_support/callbacks.rb:405:in `_run__959081092__call__942932381__callbacks'
  activesupport (3.2.9.rc2) lib/active_support/callbacks.rb:405:in `__run_callback'
  activesupport (3.2.9.rc2) lib/active_support/callbacks.rb:385:in `_run_call_callbacks'
  activesupport (3.2.9.rc2) lib/active_support/callbacks.rb:81:in `run_callbacks'
  actionpack (3.2.9.rc2) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
  actionpack (3.2.9.rc2) lib/action_dispatch/middleware/reloader.rb:65:in `call'
  actionpack (3.2.9.rc2) lib/action_dispatch/middleware/remote_ip.rb:31:in `call'
  actionpack (3.2.9.rc2) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call'
  actionpack (3.2.9.rc2) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
  railties (3.2.9.rc2) lib/rails/rack/logger.rb:32:in `call_app'
  railties (3.2.9.rc2) lib/rails/rack/logger.rb:16:in `block in call'
  activesupport (3.2.9.rc2) lib/active_support/tagged_logging.rb:22:in `tagged'
  railties (3.2.9.rc2) lib/rails/rack/logger.rb:16:in `call'
  actionpack (3.2.9.rc2) lib/action_dispatch/middleware/request_id.rb:22:in `call'
  rack (1.4.1) lib/rack/methodoverride.rb:21:in `call'
  rack (1.4.1) lib/rack/runtime.rb:17:in `call'
  activesupport (3.2.9.rc2) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
  rack (1.4.1) lib/rack/lock.rb:15:in `call'
  actionpack (3.2.9.rc2) lib/action_dispatch/middleware/static.rb:62:in `call'
  railties (3.2.9.rc2) lib/rails/engine.rb:479:in `call'
  railties (3.2.9.rc2) lib/rails/application.rb:223:in `call'
  rack (1.4.1) lib/rack/content_length.rb:14:in `call'
  railties (3.2.9.rc2) lib/rails/rack/log_tailer.rb:17:in `call'
  rack (1.4.1) lib/rack/handler/webrick.rb:59:in `service'
  c:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
  c:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
  c:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'


  Rendered c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/actionpack-3.2.9.rc2/lib/action_dispatch/middleware/templates/rescues/
ing_error.erb within rescues/layout (0.0ms)

【问题讨论】：

这是this question 的完全相同的副本。下次尝试搜索您的错误 :) 如果您希望控制器命名为 Users::OmniauthCallbacksController，那么它需要在 app/controllers/users/omniauth_callbacks_controller.rb 中。如果您不希望控制器嵌套文件夹，则只需将控制器命名为 class OmniauthCallbacksController < Devise::OmniauthCallbacksController

@uDaY：我已经添加了踪迹...

@Ashitaka：感谢您的快速回复。我已经尝试更改名称，但没有成功:)

我打赌你改了​​名字，留下的路线仍然指向users/omniauth_callbacks。要么删除 users 部分，要么必须将控制器放在 users 文件夹中。

【参考方案1】：

mv

app/controllers/omniauth_callbacks_controller.rb

到

app/controllers/users/omniauth_callbacks_controller.rb

或改变

class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController

到

class OmniauthCallbacksController < Devise::OmniauthCallbacksController

【讨论】：

这是一个更好的答案，它直接指出了问题所在。而且还干净！谢谢

routes.rb 中第三种可能的错误配置，如果您决定命名控制器，请确保您有 devise_for :users, controllers: omniauth_callbacks: 'omniauth_callbacks' 或 omniauth_callbacks: 'users/omniauth_callbacks'

【参考方案2】：

我认为那部分搞砸了：

match '/users/auth/facebook' => 'users/omniauth_callbacks#passthru'

小测试，给你：

放在你的视野中：

<%= link_to users_auth_facebook_path, users_auth_facebook_path  %>

然后点击它，它也会给出同样的错误......

我相信您应该使用类似（您在上面链接的 wiki 中提到的内容）：

devise_scope :user do
  get '/users/auth/:provider' => 'users/omniauth_callbacks#passthru'
end

并根据 params[:provider] 值包装 passthru 方法以将操作委托给适当的私有/受保护方法

class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
  def passthru
    send(params[:provider]) if providers.include?(params[:provider])
  end

  protected

  def facebook
    raise "Implement me for facebook"
  end

  def twitter
    raise "Implement me for twitter"
  end

  private

  def providers
    ["facebook", "twitter"]
  end
end