【发布时间】：2014-04-17 11:51:43
【问题描述】：
我想在我的具有 mongodb 数据库的 rails 应用程序中添加 activeadmin。我完全配置了activeadmin，但是当我使用命令添加其他资源时
rails generate active_admin:resource Activity activity_name:string
它在管理端配置活动，但是当点击活动链接时它给出错误
undefined method `column_names' for Activity:Class
Activity:Class 的未定义方法“column_names”
Rails.root: /home/tps/sites/coachup
Application Trace | Framework Trace | Full Trace
/home/tps/.rvm/gems/ruby-2.0.0-p247@couchup/bundler/gems/active_admin-5b7fa25b1e0d/lib/active_admin/resource.rb:99:in `resource_column_names'
/home/tps/.rvm/gems/ruby-2.0.0-p247@couchup/bundler/gems/active_admin-5b7fa25b1e0d/lib/active_admin/order_clause.rb:19:in `to_sql'
/home/tps/.rvm/gems/ruby-2.0.0-p247@couchup/bundler/gems/active_admin-5b7fa25b1e0d/lib/active_admin/resource_controller/data_access.rb:216:in `apply_sorting'
/home/tps/.rvm/gems/ruby-2.0.0-p247@couchup/bundler/gems/active_admin-5b7fa25b1e0d/lib/active_admin/resource_controller/data_access.rb:51:in `find_collection'
/home/tps/.rvm/gems/ruby-2.0.0-p247@couchup/bundler/gems/active_admin-5b7fa25b1e0d/lib/active_admin/resource_controller/data_access.rb:34:in `collection'
inherited_resources (1.4.1) lib/inherited_resources/actions.rb:7:in `index'
actionpack (4.0.3) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
actionpack (4.0.3) lib/abstract_controller/base.rb:189:in `process_action'
actionpack (4.0.3) lib/action_controller/metal/rendering.rb:10:in `process_action'
actionpack (4.0.3) lib/abstract_controller/callbacks.rb:18:in `block in process_action'
activesupport (4.0.3) lib/active_support/callbacks.rb:443:in `_run__778977280__process_action__callbacks'
activesupport (4.0.3) lib/active_support/callbacks.rb:80:in `run_callbacks'
actionpack (4.0.3) lib/abstract_controller/callbacks.rb:17:in `process_action'
actionpack (4.0.3) lib/action_controller/metal/rescue.rb:29:in `process_action'
actionpack (4.0.3) lib/action_controller/metal/instrumentation.rb:31:in `block in process_action'
activesupport (4.0.3) lib/active_support/notifications.rb:159:in `block in instrument'
activesupport (4.0.3) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (4.0.3) lib/active_support/notifications.rb:159:in `instrument'
actionpack (4.0.3) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
actionpack (4.0.3) lib/action_controller/metal/params_wrapper.rb:245:in `process_action'
actionpack (4.0.3) lib/abstract_controller/base.rb:136:in `process'
actionpack (4.0.3) lib/abstract_controller/rendering.rb:44:in `process'
actionpack (4.0.3) lib/action_controller/metal.rb:195:in `dispatch'
actionpack (4.0.3) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
actionpack (4.0.3) lib/action_controller/metal.rb:231:in `block in action'
actionpack (4.0.3) lib/action_dispatch/routing/route_set.rb:80:in `call'
actionpack (4.0.3) lib/action_dispatch/routing/route_set.rb:80:in `dispatch'
actionpack (4.0.3) lib/action_dispatch/routing/route_set.rb:48:in `call'
actionpack (4.0.3) lib/action_dispatch/journey/router.rb:71:in `block in call'
actionpack (4.0.3) lib/action_dispatch/journey/router.rb:59:in `each'
actionpack (4.0.3) lib/action_dispatch/journey/router.rb:59:in `call'
actionpack (4.0.3) lib/action_dispatch/routing/route_set.rb:680:in `call'
warden (1.2.3) lib/warden/manager.rb:35:in `block in call'
warden (1.2.3) lib/warden/manager.rb:34:in `catch'
warden (1.2.3) lib/warden/manager.rb:34:in `call'
rack (1.5.2) lib/rack/etag.rb:23:in `call'
rack (1.5.2) lib/rack/conditionalget.rb:25:in `call'
rack (1.5.2) lib/rack/head.rb:11:in `call'
actionpack (4.0.3) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
actionpack (4.0.3) lib/action_dispatch/middleware/flash.rb:241:in `call'
rack (1.5.2) lib/rack/session/abstract/id.rb:225:in `context'
rack (1.5.2) lib/rack/session/abstract/id.rb:220:in `call'
actionpack (4.0.3) lib/action_dispatch/middleware/cookies.rb:486:in `call'
actionpack (4.0.3) lib/action_dispatch/middleware/callbacks.rb:29:in `block
提前致谢。
【问题讨论】：
标签： mongodb ruby-on-rails-4 activeadmin