ActiveAdmin中的此命名空間配置有什么問題？

Question

我在ActiveAdmin中的命名空間有問題。 如果將配置設置添加到初始化程序中的名稱空間，則在嘗試啟動Webrick時會捕獲到很長的異常列表。

我有以下結構：

▾ app/
  ▾ admin/
      agents.rb
      dashboards.rb
  ▾ agency/
      agents.rb
      dashboards.rb

我看不到在儀表盤內設置名稱空間的方法，因此目前它們基本上都是：

ActiveAdmin::Dashboards.build do
end

代理具有以下聲明：

ActiveAdmin.register Agent, :namespace=>:agency_admin do

和

ActiveAdmin.register Agent, :namespace=>:admin do

使用默認配置，一切都可以正常工作。 我可以拉起/ agency_admin / agents或/ admin / agents就好了。 但是，一旦我在初始值設定項中添加一個配置（例如注釋掉的示例），就可以：

   config.namespace :admin do |admin|
     admin.site_title = "Custom Admin Title"
   end

啟動服務器時，我得到了附加的異常流。 我對此表示感謝。

順便說一句，我這樣做的原因是為每個命名空間提供不同的設計方法。 從我在源代碼中可以看到的信息來看，有可能做到這一點（至少是當前主機上的內容），因為base_controller從名稱空間獲取了該信息。 我意識到很多人建議使用CanCan，但目前我還不想這樣做。

再次感謝！

/Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/bundler/gems/active_admin-bbdbadafe5d7/lib/active_admin/namespace.rb:191:in `eval': undefined method `devise' for #<Class:0x000001063e9188> (NoMethodError)
  from /Users/chance/code/rails/nokr/app/models/user.rb:36:in `<class:User>'
  from /Users/chance/code/rails/nokr/app/models/user.rb:1:in `<top (required)>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:456:in `load'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:456:in `block in load_file'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:640:in `new_constants_in'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:455:in `load_file'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:342:in `require_or_load'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:489:in `load_missing_constant'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:181:in `block in const_missing'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:179:in `each'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:179:in `const_missing'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/ext/module.rb:36:in `const_missing'
  from /Users/chance/code/rails/nokr/app/helpers/user/addresses_helper.rb:1:in `<top (required)>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:456:in `load'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:456:in `block in load_file'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:640:in `new_constants_in'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:455:in `load_file'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:342:in `require_or_load'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:302:in `depend_on'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:214:in `require_dependency'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/actionpack-3.1.1/lib/abstract_controller/helpers.rb:135:in `block in modules_for_helpers'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/actionpack-3.1.1/lib/abstract_controller/helpers.rb:131:in `map!'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/actionpack-3.1.1/lib/abstract_controller/helpers.rb:131:in `modules_for_helpers'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/actionpack-3.1.1/lib/action_controller/metal/helpers.rb:89:in `modules_for_helpers'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/actionpack-3.1.1/lib/abstract_controller/helpers.rb:95:in `helper'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/actionpack-3.1.1/lib/action_controller/railties/paths.rb:17:in `block (2 levels) in with'
  from /Users/chance/code/rails/nokr/app/controllers/application_controller.rb:1:in `<top (required)>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:456:in `load'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:456:in `block in load_file'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:640:in `new_constants_in'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:455:in `load_file'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:342:in `require_or_load'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:489:in `load_missing_constant'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:181:in `block in const_missing'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:179:in `each'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:179:in `const_missing'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/ext/module.rb:36:in `const_missing'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/inherited_resources-1.2.2/lib/inherited_resources/base.rb:14:in `<module:InheritedResources>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/inherited_resources-1.2.2/lib/inherited_resources/base.rb:4:in `<top (required)>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/bundler/gems/active_admin-bbdbadafe5d7/lib/active_admin/base_controller/menu.rb:2:in `<module:ActiveAdmin>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/bundler/gems/active_admin-bbdbadafe5d7/lib/active_admin/base_controller/menu.rb:1:in `<top (required)>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:240:in `require'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:240:in `block in require'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:223:in `block in load_dependency'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:640:in `new_constants_in'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:223:in `load_dependency'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:240:in `require'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/bundler/gems/active_admin-bbdbadafe5d7/lib/active_admin/base_controller.rb:2:in `<top (required)>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/bundler/gems/active_admin-bbdbadafe5d7/lib/active_admin/resource_controller/actions.rb:2:in `<module:ActiveAdmin>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/bundler/gems/active_admin-bbdbadafe5d7/lib/active_admin/resource_controller/actions.rb:1:in `<top (required)>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:240:in `require'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:240:in `block in require'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:223:in `block in load_dependency'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:640:in `new_constants_in'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:223:in `load_dependency'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:240:in `require'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/bundler/gems/active_admin-bbdbadafe5d7/lib/active_admin/resource_controller.rb:2:in `<top (required)>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/bundler/gems/active_admin-bbdbadafe5d7/lib/active_admin/dashboards/dashboard_controller.rb:3:in `<module:Dashboards>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/bundler/gems/active_admin-bbdbadafe5d7/lib/active_admin/dashboards/dashboard_controller.rb:2:in `<module:ActiveAdmin>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/bundler/gems/active_admin-bbdbadafe5d7/lib/active_admin/dashboards/dashboard_controller.rb:1:in `<top (required)>'
  from (eval):1:in `generate_dashboard_controller'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/bundler/gems/active_admin-bbdbadafe5d7/lib/active_admin/namespace.rb:191:in `eval'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/bundler/gems/active_admin-bbdbadafe5d7/lib/active_admin/namespace.rb:191:in `generate_dashboard_controller'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/bundler/gems/active_admin-bbdbadafe5d7/lib/active_admin/namespace.rb:43:in `initialize'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/bundler/gems/active_admin-bbdbadafe5d7/lib/active_admin/application.rb:110:in `new'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/bundler/gems/active_admin-bbdbadafe5d7/lib/active_admin/application.rb:110:in `find_or_create_namespace'
  from /Users/chance/code/rails/nokr/config/initializers/active_admin.rb:39:in `block in <top (required)>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/bundler/gems/active_admin-bbdbadafe5d7/lib/active_admin.rb:70:in `setup'
  from /Users/chance/code/rails/nokr/config/initializers/active_admin.rb:1:in `<top (required)>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:234:in `load'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:234:in `block in load'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:223:in `block in load_dependency'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:640:in `new_constants_in'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:223:in `load_dependency'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:234:in `load'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/railties-3.1.1/lib/rails/engine.rb:556:in `block (2 levels) in <class:Engine>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/railties-3.1.1/lib/rails/engine.rb:555:in `each'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/railties-3.1.1/lib/rails/engine.rb:555:in `block in <class:Engine>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/railties-3.1.1/lib/rails/initializable.rb:30:in `instance_exec'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/railties-3.1.1/lib/rails/initializable.rb:30:in `run'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/railties-3.1.1/lib/rails/initializable.rb:55:in `block in run_initializers'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/railties-3.1.1/lib/rails/initializable.rb:54:in `each'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/railties-3.1.1/lib/rails/initializable.rb:54:in `run_initializers'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/railties-3.1.1/lib/rails/application.rb:96:in `initialize!'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/railties-3.1.1/lib/rails/railtie/configurable.rb:30:in `method_missing'
  from /Users/chance/code/rails/nokr/config/environment.rb:5:in `<top (required)>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:240:in `require'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:240:in `block in require'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:223:in `block in load_dependency'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:640:in `new_constants_in'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:223:in `load_dependency'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:240:in `require'
  from /Users/chance/code/rails/nokr/config.ru:4:in `block in <main>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/rack-1.3.3/lib/rack/builder.rb:51:in `instance_eval'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/rack-1.3.3/lib/rack/builder.rb:51:in `initialize'
  from /Users/chance/code/rails/nokr/config.ru:1:in `new'
  from /Users/chance/code/rails/nokr/config.ru:1:in `<main>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/rack-1.3.3/lib/rack/builder.rb:40:in `eval'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/rack-1.3.3/lib/rack/builder.rb:40:in `parse_file'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/rack-1.3.3/lib/rack/server.rb:200:in `app'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/railties-3.1.1/lib/rails/commands/server.rb:46:in `app'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/rack-1.3.3/lib/rack/server.rb:301:in `wrapped_app'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/rack-1.3.3/lib/rack/server.rb:252:in `start'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/railties-3.1.1/lib/rails/commands/server.rb:70:in `start'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/railties-3.1.1/lib/rails/commands.rb:54:in `block in <top (required)>'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/railties-3.1.1/lib/rails/commands.rb:49:in `tap'
  from /Users/chance/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/gems/1.9.1/gems/railties-3.1.1/lib/rails/commands.rb:49:in `<top (required)>'
  from script/rails:6:in `require'

Answer 1

事實證明，這是初始化程序上的操作問題。 Rails會根據字母順序而不是gem decleration（這是我最初的想法）加載初始化程序。

無論出於什么原因，一旦我引入了配置選項，它就會嘗試加載/解析User對象（不是admin_user的devise模型）並由於尚未初始化Devise而將其炸毀。

將初始化程序/active_admin.rb更改為初始化程序/x_active_admin.rb可解決此問題。