安装Active Admin并获取ArgumentError
我正在尝试第一次使用ActiveAdmin w / Rails 4.安装所有相关gem后，我尝试运行安装程序，即：
rails generate active_admin:install 这样做会给我以下错误：
in `add_route': Invalid route name, already in use: 'admin_root' (ArgumentError)
但是，我在routes.rb中没有任何’admin_root’路由，所以我有点困惑。 这是运行’rake routes’的输出：
Prefix Verb URI Pattern Controller#Action exams GET /exams(.:format) exams#index POST /exams(.:format) exams#create new_exam GET /exams/new(.:format) exams#new edit_exam GET /exams/:id/edit(.:format) exams#edit exam GET /exams/:id(.:format) exams#show PATCH /exams/:id(.:format) exams#update PUT /exams/:id(.:format) exams#update DELETE /exams/:id(.:format) exams#destroy new_user_session GET /users/sign_in(.:format) devise/sessions#new user_session POST /users/sign_in(.:format) devise/sessions#create destroy_user_session GET /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 root GET / composer#index home GET /home(.:format) home#index GET /exam_db/:exam_name/:chapter_name/:topic_name/:item_name(.:format) exam_db#gateway exam_db_gateway GET /exam_db/gateway(.:format) exam_db#gateway
这是完整的错误：
gems/actionpack-4.0.0/lib/action_dispatch/routing/route_set.rb:409:in `add_route': Invalid route name, already in use: 'admin_root' (ArgumentError) You may have defined two routes with the same name using the `:as` option, or you may be overriding a route already defined by a resource with the same naming. For the latter, you can restrict the routes created with `resources` as explained here:
另外值得注意的是，如果我决定完全跳过Devise用户类，它可以工作：
rails generate active_admin:install --skip-users
唯一的问题是，如果我跳过Devise用户类，我不知道如何配置’config / initializers / active_admin.rb’？
有关为什么会发生这种情况的任何想法？
使用ActiveAdmin升级到rails 4时出现了同样的错误，结果发现这条线在我的routes中重复了两次.rb： ActiveAdmin.routes(self)我删除了第二个实例，错误就消失了。
除了安德烈的回答 – 由于错误导致资产安装不正确。 您必须运行rails g active_admin:assets以获取管道中安装的js / css资产。