如何配置 routes.rb 以访问 localhost:3000/admin答案

【问题标题】：How to configure routes.rb for get access to localhost:3000/admin如何配置 routes.rb 以访问 localhost:3000/admin
【发布时间】：2015-06-08 22:08:51
【问题描述】：

我在这个网址关注active_admin的教程：activeadmin

我尝试按照以下不同步骤将其添加到已存在的项目中：

将其添加到我的 Gemfile gem 'activeadmin', github: 'activeadmin'
运行以下命令，因为我已经安装了设计rails g active_admin:install --skip-users
还有rake db:migrate && rails server

我的问题是当我想访问 localhost:3000/admin 时出现此错误Unknown Action AbstractController::ActionNotFound

这是我的路线.rb

Rails.application.routes.draw do  
  config = ActiveAdmin::Devise.config
  config[:controllers][:sessions] = 'sessions'
  config[:controllers][:registrations] = 'registrations'
  config[:as] = 'admin'

  devise_for :users, config

  # Login / Logout routes
  namespace :v1, path: '/' do
    devise_scope :user do
      post '/sessions', to: 'sessions#create'
      post '/registrations', to: 'registrations#create'
      delete '/sessions', to: 'sessions#destroy'
    end

    # User routes
    get '/user', to: 'users#show'
    patch '/user/update', to: 'users#update'
  end
  ActiveAdmin.routes(self)
end

我正在使用 rails 4.2.1 和 ruby 2.2.2

更新 09/06 rake routes

    new_admin_user_session GET        /admin/login(.:format)                    sessions#new
        admin_user_session POST       /admin/login(.:format)                    sessions#create
destroy_admin_user_session DELETE|GET /admin/logout(.:format)                   sessions#destroy
       admin_user_password POST       /admin/password(.:format)                 active_admin/devise/passwords#create
   new_admin_user_password GET        /admin/password/new(.:format)             active_admin/devise/passwords#new
  edit_admin_user_password GET        /admin/password/edit(.:format)            active_admin/devise/passwords#edit
                           PATCH      /admin/password(.:format)                 active_admin/devise/passwords#update
                           PUT        /admin/password(.:format)                 active_admin/devise/passwords#update
cancel_admin_user_registration GET        /admin/cancel(.:format)                   registrations#cancel
   admin_user_registration POST       /admin(.:format)                          registrations#create
   new_admin_user_registration GET        /admin/sign_up(.:format)                  registrations#new
   edit_admin_user_registration GET        /admin/edit(.:format)                     registrations#edit
                           PATCH      /admin(.:format)                          registrations#update
                           PUT        /admin(.:format)                          registrations#update
                           DELETE     /admin(.:format)                          registrations#destroy
               v1_sessions POST       /sessions(.:format)                       v1/sessions#create
          v1_registrations POST       /registrations(.:format)                  v1/registrations#create
                           DELETE     /sessions(.:format)                       v1/sessions#destroy
                   v1_user GET        /user(.:format)                           v1/users#show
            v1_user_update PATCH      /user/update(.:format)                    v1/users#update
                admin_root GET        /admin(.:format)                          admin/dashboard#index
           admin_dashboard GET        /admin/dashboard(.:format)                admin/dashboard#index
batch_action_admin_admin_users POST       /admin/admin_users/batch_action(.:format) admin/admin_users#batch_action
         admin_admin_users GET        /admin/admin_users(.:format)              admin/admin_users#index
                           POST       /admin/admin_users(.:format)              admin/admin_users#create
      new_admin_admin_user GET        /admin/admin_users/new(.:format)          admin/admin_users#new
     edit_admin_admin_user GET        /admin/admin_users/:id/edit(.:format)     admin/admin_users#edit
          admin_admin_user GET        /admin/admin_users/:id(.:format)          admin/admin_users#show
                           PATCH      /admin/admin_users/:id(.:format)          admin/admin_users#update
                           PUT        /admin/admin_users/:id(.:format)          admin/admin_users#update
                           DELETE     /admin/admin_users/:id(.:format)          admin/admin_users#destroy
            admin_comments GET        /admin/comments(.:format)                 admin/comments#index
                           POST       /admin/comments(.:format)                 admin/comments#create
             admin_comment GET        /admin/comments/:id(.:format)             admin/comments#show

和日志

  F, [2015-06-09T10:45:02.609120 #2451] FATAL -- : 
  AbstractController::ActionNotFound (AbstractController::ActionNotFound):
  /home/snoobie/.rvm/gems/ruby-2.2.2/bundler/gems/activeadmin-0b4b22871fd3/lib/active_admin/base_controller.rb:29:in `only_render_implemented_actions'

我希望有人能解释我做错了什么。谢谢！

【问题讨论】：

运行rake routes会得到什么？
我在帖子中添加了更新
可能默认的 activeadmin 链接 (/admin) 与设计冲突。你应该看看这个链接https://gist.github.com/mikeatlas/5628317。
谢谢@juliobetta 我查看了链接并更改了路线，但没有任何改变。如果我创建一个新的 Rails 项目并添加有效的 activeadmin gem，否则对于旧项目我会收到此错误。

标签： ruby-on-rails ruby ruby-on-rails-4 devise activeadmin

【解决方案1】：

我通过使用rails_admin 解决了这个问题，更容易聚合到项目中。如果有人需要有关在 rails 项目中添加 rails_admin 的过程的更多信息。请发表评论，我会详细解释。

【讨论】：