安装rails_admin，一切都停止工作(Installed rails_admin and ev

所以我想创建一个应用程序，人们可以在那里欣赏艺术。 问题是，只有管理员应该能够创建，编辑和删除数据。 所以我想添加一个管理界面。 我去与rails_admin宝石。

我已经安装了一切，因为它的git的文档上说，但是当我安装了它的一切停止工作。 我无法生成支架，模型或控制器和I不能启动我的服务器。 每当我试一下它给了我这个消息。

/Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.2.3/lib/active_support/inflector/methods.rb:229:in `block in constantize': uninitialized constant Admin (NameError)
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.2.3/lib/active_support/inflector/methods.rb:228:in `each'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.2.3/lib/active_support/inflector/methods.rb:228:in `constantize'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/devise-2.1.2/lib/devise.rb:256:in `get'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/devise-2.1.2/lib/devise/mapping.rb:77:in `to'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/devise-2.1.2/lib/devise/mapping.rb:72:in `modules'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/devise-2.1.2/lib/devise/mapping.rb:89:in `routes'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/devise-2.1.2/lib/devise/mapping.rb:156:in `default_used_route'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/devise-2.1.2/lib/devise/mapping.rb:66:in `initialize'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/devise-2.1.2/lib/devise.rb:290:in `new'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/devise-2.1.2/lib/devise.rb:290:in `add_mapping'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/devise-2.1.2/lib/devise/rails/routes.rb:208:in `block in devise_for'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/devise-2.1.2/lib/devise/rails/routes.rb:207:in `each'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/devise-2.1.2/lib/devise/rails/routes.rb:207:in `devise_for'
from /Users/Max/Desktop/walls/config/routes.rb:18:in `block in <top (required)>'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.3/lib/action_dispatch/routing/route_set.rb:282:in `instance_exec'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.3/lib/action_dispatch/routing/route_set.rb:282:in `eval_block'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.3/lib/action_dispatch/routing/route_set.rb:260:in `draw'
from /Users/Max/Desktop/walls/config/routes.rb:1:in `<top (required)>'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/application/routes_reloader.rb:40:in `block in load_paths'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/application/routes_reloader.rb:40:in `each'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/application/routes_reloader.rb:40:in `load_paths'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/application/routes_reloader.rb:16:in `reload!'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/application/routes_reloader.rb:26:in `block in updater'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.2.3/lib/active_support/file_update_checker.rb:78:in `call'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.2.3/lib/active_support/file_update_checker.rb:78:in `execute'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/application/routes_reloader.rb:27:in `updater'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/application/routes_reloader.rb:7:in `execute_if_updated'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/application/finisher.rb:66:in `block in <module:Finisher>'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/initializable.rb:30:in `instance_exec'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/initializable.rb:30:in `run'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/initializable.rb:55:in `block in run_initializers'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/initializable.rb:54:in `each'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/initializable.rb:54:in `run_initializers'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/application.rb:136:in `initialize!'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/railtie/configurable.rb:30:in `method_missing'
from /Users/Max/Desktop/walls/config/environment.rb:5:in `<top (required)>'
from /Users/Max/Desktop/walls/config.ru:4:in `block in <main>'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/rack-1.4.1/lib/rack/builder.rb:51:in `instance_eval'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/rack-1.4.1/lib/rack/builder.rb:51:in `initialize'
from /Users/Max/Desktop/walls/config.ru:1:in `new'
from /Users/Max/Desktop/walls/config.ru:1:in `<main>'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/rack-1.4.1/lib/rack/builder.rb:40:in `eval'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/rack-1.4.1/lib/rack/builder.rb:40:in `parse_file'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/rack-1.4.1/lib/rack/server.rb:200:in `app'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/commands/server.rb:46:in `app'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/rack-1.4.1/lib/rack/server.rb:301:in `wrapped_app'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/rack-1.4.1/lib/rack/server.rb:252:in `start'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/commands/server.rb:70:in `start'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/commands.rb:55:in `block in <top (required)>'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/commands.rb:50:in `tap'
from /Users/Max/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.3/lib/rails/commands.rb:50:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'

我已经有我的所有数据建立之前，我安装rails_admin，所以如果我不得不重新开始这将是非常糟糕的。

如果有人需要更多的信息，我会很高兴给它，但我不知道，现在发布的东西。

Answer 1:

看看你的routes.rb，必须有我的一些代码，这样devise_for：admin_users，ActiveAdmin :: Devise.config

删除或删除它。 您已经删除管理员，但可以在路线没有改变。

Answer 2:

要返回到工作状态的项目再次，从您的Gemfile取出宝石“rails_admin”声明，你的配置/初始化目录中删除rails_admin.rb文件，然后删除rails_admin产生从配置/ routes.rb中路线：

devise_for :admins
mount RailsAdmin::Engine => '/rails_admin', :as => 'rails_admin'

这是什么原因造成设计寻找一个管理模型。 去除，去除与创业板和初始化文件应该从项目中删除整个事情一起。

文章来源: Installed rails_admin and everything stops working