未定义的方法使用ActiveAdmin为＃“重新排序”
我使用Ruby ruby 1.9.2p290和Ruby on Rails 3.2.1时遇到ActiveAdmin的问题。
我使用此Wiki页面为完美运行的AdminUsers设置资源： 您的第一个管理资源：AdminUser
之后我想为我的项目模型创建资源。 迁移的内容如下所示：
class CreateProjects < ActiveRecord::Migration def change create_table :projects do |t| t.string :name t.text :description t.boolean :isactive t.timestamps end end end class AddSlugToProjects < ActiveRecord::Migration def change add_column :projects, :slug, :string add_index :projects, :slug end end 我的项目模型：
class Project ["isactive = ?",true] extend FriendlyId friendly_id :name, use: [:slugged, :history] attr_accessible :name, :description, :isactive end
这就是project_controller：
class ProjectsController 'LOWER(name) asc') # end def show @project = Project.isactive.find(params[:id]) if request.path != project_path(@project) redirect_to @project, :status => :moved_permanently end end end
admin / projects.rb目前是“空的”
ActiveAdmin.register Project do end
毕竟，我得到的是以下错误：
Started GET "/admin/projects" for 192.168.0.2 at 2012-02-21 20:58:49 +0100 Processing by Admin::ProjectsController#index as HTML Project Load (0.1ms) SELECT "projects".* FROM "projects" WHERE (isactive = 't') ORDER BY LOWER(name) asc AdminUser Load (0.1ms) SELECT "admin_users".* FROM "admin_users" WHERE "admin_users"."id" = 2 LIMIT 1 Rendered /home/eins11/.rbenv/versions/1.9.2-p290/lib/ruby/gems/1.9.1/gems/activeadmin-0.4.1/app/views/active_admin/resource/index.html.arb (11.7ms) Completed 500 Internal Server Error in 54ms ActionView::Template::Error (undefined method `reorder' for #): 1: render renderer_for(:index) activeadmin (0.4.1) lib/active_admin/views/pages/index.rb:41:in `items_in_collection?' activeadmin (0.4.1) lib/active_admin/views/pages/index.rb:20:in `main_content' activeadmin (0.4.1) lib/active_admin/views/pages/base.rb:116:in `block (2 levels) in build_main_content_wrapper' activeadmin (0.4.1) lib/active_admin/arbre/builder.rb:68:in `block in build_tag' activeadmin (0.4.1) lib/active_admin/arbre/builder.rb:96:in `with_current_dom_context' activeadmin (0.4.1) lib/active_admin/arbre/builder.rb:67:in `build_tag' activeadmin (0.4.1) lib/active_admin/arbre/builder.rb:77:in `insert_tag' activeadmin (0.4.1) lib/active_admin/arbre/html/element.rb:17:in `div' activeadmin (0.4.1) lib/active_admin/views/pages/base.rb:115:in `block in build_main_content_wrapper' activeadmin (0.4.1) lib/active_admin/arbre/builder.rb:68:in `block in build_tag' activeadmin (0.4.1) lib/active_admin/arbre/builder.rb:96:in `with_current_dom_context' activeadmin (0.4.1) lib/active_admin/arbre/builder.rb:67:in `build_tag' activeadmin (0.4.1) lib/active_admin/arbre/builder.rb:77:in `insert_tag' activeadmin (0.4.1) lib/active_admin/arbre/html/element.rb:17:in `div' activeadmin (0.4.1) lib/active_admin/views/pages/base.rb:114:in `build_main_content_wrapper' activeadmin (0.4.1) lib/active_admin/views/pages/base.rb:98:in `block in build_page_content' activeadmin (0.4.1) lib/active_admin/arbre/builder.rb:68:in `block in build_tag' activeadmin (0.4.1) lib/active_admin/arbre/builder.rb:96:in `with_current_dom_context' activeadmin (0.4.1) lib/active_admin/arbre/builder.rb:67:in `build_tag' activeadmin (0.4.1) lib/active_admin/arbre/builder.rb:77:in `insert_tag' activeadmin (0.4.1) lib/active_admin/arbre/html/element.rb:17:in `div' activeadmin (0.4.1) lib/active_admin/views/pages/base.rb:97:in `build_page_content' activeadmin (0.4.1) lib/active_admin/views/pages/base.rb:41:in `block (2 levels) in build_page' activeadmin (0.4.1) lib/active_admin/arbre/builder.rb:68:in `block in build_tag' activeadmin (0.4.1) lib/active_admin/arbre/builder.rb:96:in `with_current_dom_context' activeadmin (0.4.1) lib/active_admin/arbre/builder.rb:67:in `build_tag' activeadmin (0.4.1) lib/active_admin/arbre/builder.rb:77:in `insert_tag' activeadmin (0.4.1) lib/active_admin/arbre/html/element.rb:17:in `div' activeadmin (0.4.1) lib/active_admin/views/pages/base.rb:38:in `block in build_page' activeadmin (0.4.1) lib/active_admin/arbre/builder.rb:96:in `with_current_dom_context' activeadmin (0.4.1) lib/active_admin/views/pages/base.rb:37:in `build_page' activeadmin (0.4.1) lib/active_admin/views/pages/base.rb:10:in `build' activeadmin (0.4.1) lib/active_admin/arbre/builder.rb:63:in `build_tag' activeadmin (0.4.1) lib/active_admin/arbre/builder.rb:77:in `insert_tag' activeadmin (0.4.1) lib/active_admin/arbre/builder.rb:41:in `method_missing' activeadmin (0.4.1) lib/active_admin/view_helpers/renderer_helper.rb:21:in `render' activeadmin (0.4.1) app/views/active_admin/resource/index.html.arb:1:in `__home_eins____rbenv_versions_______p____lib_ruby_gems_______gems_activeadmin_______app_views_active_admin_resource_index_html_arb___523541447_100786690' actionpack (3.2.1) lib/action_view/template.rb:143:in `block in render' activesupport (3.2.1) lib/active_support/notifications.rb:125:in `instrument' actionpack (3.2.1) lib/action_view/template.rb:141:in `render' actionpack (3.2.1) lib/action_view/renderer/template_renderer.rb:41:in `block (2 levels) in render_template' actionpack (3.2.1) lib/action_view/renderer/abstract_renderer.rb:38:in `block in instrument' activesupport (3.2.1) lib/active_support/notifications.rb:123:in `block in instrument' activesupport (3.2.1) lib/active_support/notifications/instrumenter.rb:20:in `instrument' activesupport (3.2.1) lib/active_support/notifications.rb:123:in `instrument' actionpack (3.2.1) lib/action_view/renderer/abstract_renderer.rb:38:in `instrument' actionpack (3.2.1) lib/action_view/renderer/template_renderer.rb:40:in `block in render_template' actionpack (3.2.1) lib/action_view/renderer/template_renderer.rb:48:in `render_with_layout' actionpack (3.2.1) lib/action_view/renderer/template_renderer.rb:39:in `render_template' actionpack (3.2.1) lib/action_view/renderer/template_renderer.rb:12:in `render' actionpack (3.2.1) lib/action_view/renderer/renderer.rb:36:in `render_template' actionpack (3.2.1) lib/action_view/renderer/renderer.rb:17:in `render' actionpack (3.2.1) lib/abstract_controller/rendering.rb:109:in `_render_template' actionpack (3.2.1) lib/action_controller/metal/streaming.rb:225:in `_render_template' actionpack (3.2.1) lib/abstract_controller/rendering.rb:103:in `render_to_body' actionpack (3.2.1) lib/action_controller/metal/renderers.rb:28:in `render_to_body' actionpack (3.2.1) lib/action_controller/metal/compatibility.rb:50:in `render_to_body' actionpack (3.2.1) lib/abstract_controller/rendering.rb:88:in `render' actionpack (3.2.1) lib/action_controller/metal/rendering.rb:16:in `render' actionpack (3.2.1) lib/action_controller/metal/instrumentation.rb:40:in `block (2 levels) in render' activesupport (3.2.1) lib/active_support/core_ext/benchmark.rb:5:in `block in ms' /home/eins11/.rbenv/versions/1.9.2-p290/lib/ruby/1.9.1/benchmark.rb:310:in `realtime' activesupport (3.2.1) lib/active_support/core_ext/benchmark.rb:5:in `ms' actionpack (3.2.1) lib/action_controller/metal/instrumentation.rb:40:in `block in render' actionpack (3.2.1) lib/action_controller/metal/instrumentation.rb:83:in `cleanup_view_runtime' activerecord (3.2.1) lib/active_record/railties/controller_runtime.rb:24:in `cleanup_view_runtime' actionpack (3.2.1) lib/action_controller/metal/instrumentation.rb:39:in `render' activeadmin (0.4.1) lib/active_admin/resource_controller/actions.rb:13:in `block (2 levels) in index' actionpack (3.2.1) lib/action_controller/metal/responder.rb:229:in `call' actionpack (3.2.1) lib/action_controller/metal/responder.rb:229:in `default_render' actionpack (3.2.1) lib/action_controller/metal/responder.rb:160:in `to_html' responders (0.6.5) lib/responders/flash_responder.rb:93:in `to_html' actionpack (3.2.1) lib/action_controller/metal/responder.rb:153:in `respond' actionpack (3.2.1) lib/action_controller/metal/responder.rb:146:in `call' actionpack (3.2.1) lib/action_controller/metal/mime_responds.rb:238:in `respond_with' inherited_resources (1.3.0) lib/inherited_resources/actions.rb:7:in `index' activeadmin (0.4.1) lib/active_admin/resource_controller/actions.rb:11:in `index' actionpack (3.2.1) lib/action_controller/metal/implicit_render.rb:4:in `send_action' actionpack (3.2.1) lib/abstract_controller/base.rb:167:in `process_action' actionpack (3.2.1) lib/action_controller/metal/rendering.rb:10:in `process_action' actionpack (3.2.1) lib/abstract_controller/callbacks.rb:18:in `block in process_action' activesupport (3.2.1) lib/active_support/callbacks.rb:469:in `_run__639476650__process_action__1068992826__callbacks' activesupport (3.2.1) lib/active_support/callbacks.rb:405:in `__run_callback' activesupport (3.2.1) lib/active_support/callbacks.rb:385:in `_run_process_action_callbacks' activesupport (3.2.1) lib/active_support/callbacks.rb:81:in `run_callbacks' actionpack (3.2.1) lib/abstract_controller/callbacks.rb:17:in `process_action' actionpack (3.2.1) lib/action_controller/metal/rescue.rb:29:in `process_action' actionpack (3.2.1) lib/action_controller/metal/instrumentation.rb:30:in `block in process_action' activesupport (3.2.1) lib/active_support/notifications.rb:123:in `block in instrument' activesupport (3.2.1) lib/active_support/notifications/instrumenter.rb:20:in `instrument' activesupport (3.2.1) lib/active_support/notifications.rb:123:in `instrument' actionpack (3.2.1) lib/action_controller/metal/instrumentation.rb:29:in `process_action' actionpack (3.2.1) lib/action_controller/metal/params_wrapper.rb:205:in `process_action' activerecord (3.2.1) lib/active_record/railties/controller_runtime.rb:18:in `process_action' actionpack (3.2.1) lib/abstract_controller/base.rb:121:in `process' actionpack (3.2.1) lib/abstract_controller/rendering.rb:45:in `process' actionpack (3.2.1) lib/action_controller/metal.rb:203:in `dispatch' actionpack (3.2.1) lib/action_controller/metal/rack_delegation.rb:14:in `dispatch' actionpack (3.2.1) lib/action_controller/metal.rb:246:in `block in action' actionpack (3.2.1) lib/action_dispatch/routing/route_set.rb:66:in `call' actionpack (3.2.1) lib/action_dispatch/routing/route_set.rb:66:in `dispatch' actionpack (3.2.1) lib/action_dispatch/routing/route_set.rb:30:in `call' journey (1.0.1) lib/journey/router.rb:68:in `block in call' journey (1.0.1) lib/journey/router.rb:56:in `each' journey (1.0.1) lib/journey/router.rb:56:in `call' actionpack (3.2.1) lib/action_dispatch/routing/route_set.rb:589:in `call' sass (3.1.15) lib/sass/plugin/rack.rb:54:in `call' warden (1.1.1) lib/warden/manager.rb:35:in `block in call' warden (1.1.1) lib/warden/manager.rb:34:in `catch' warden (1.1.1) lib/warden/manager.rb:34:in `call' actionpack (3.2.1) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call' rack (1.4.1) lib/rack/etag.rb:23:in `call' rack (1.4.1) lib/rack/conditionalget.rb:25:in `call' actionpack (3.2.1) lib/action_dispatch/middleware/head.rb:14:in `call' actionpack (3.2.1) lib/action_dispatch/middleware/params_parser.rb:21:in `call' actionpack (3.2.1) lib/action_dispatch/middleware/flash.rb:242:in `call' rack (1.4.1) lib/rack/session/abstract/id.rb:205:in `context' rack (1.4.1) lib/rack/session/abstract/id.rb:200:in `call' actionpack (3.2.1) lib/action_dispatch/middleware/cookies.rb:338:in `call' activerecord (3.2.1) lib/active_record/query_cache.rb:64:in `call' activerecord (3.2.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:443:in `call' actionpack (3.2.1) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call' activesupport (3.2.1) lib/active_support/callbacks.rb:405:in `_run__471556791__call__937320005__callbacks' activesupport (3.2.1) lib/active_support/callbacks.rb:405:in `__run_callback' activesupport (3.2.1) lib/active_support/callbacks.rb:385:in `_run_call_callbacks' activesupport (3.2.1) lib/active_support/callbacks.rb:81:in `run_callbacks' actionpack (3.2.1) lib/action_dispatch/middleware/callbacks.rb:27:in `call' actionpack (3.2.1) lib/action_dispatch/middleware/reloader.rb:65:in `call' actionpack (3.2.1) lib/action_dispatch/middleware/remote_ip.rb:31:in `call' actionpack (3.2.1) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call' actionpack (3.2.1) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call' railties (3.2.1) lib/rails/rack/logger.rb:26:in `call_app' railties (3.2.1) lib/rails/rack/logger.rb:16:in `call' actionpack (3.2.1) lib/action_dispatch/middleware/request_id.rb:22:in `call' rack (1.4.1) lib/rack/methodoverride.rb:21:in `call' rack (1.4.1) lib/rack/runtime.rb:17:in `call' activesupport (3.2.1) lib/active_support/cache/strategy/local_cache.rb:72:in `call' rack (1.4.1) lib/rack/lock.rb:15:in `call' actionpack (3.2.1) lib/action_dispatch/middleware/static.rb:53:in `call' railties (3.2.1) lib/rails/engine.rb:479:in `call' railties (3.2.1) lib/rails/application.rb:220:in `call' rack (1.4.1) lib/rack/content_length.rb:14:in `call' railties (3.2.1) lib/rails/rack/log_tailer.rb:14:in `call' rack (1.4.1) lib/rack/handler/webrick.rb:59:in `service' /home/eins11/.rbenv/versions/1.9.2-p290/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service' /home/eins11/.rbenv/versions/1.9.2-p290/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run' /home/eins11/.rbenv/versions/1.9.2-p290/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread' Rendered /home/eins11/.rbenv/versions/1.9.2-p290/lib/ruby/gems/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/templates/rescues/_trace.erb (5.1ms) Rendered /home/eins11/.rbenv/versions/1.9.2-p290/lib/ruby/gems/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (1.1ms) Rendered /home/eins11/.rbenv/versions/1.9.2-p290/lib/ruby/gems/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/templates/rescues/template_error.erb within rescues/layout (9.8ms)
我不知道问题是什么……
啊，我找到了解决方案。 我不确切地知道错误发生的原因，但我不得不改变我的application_controller。
在application_controller中，我将所有项目提取到@projects：
before_filter :getActiveProjects protected def getActiveProjects @projects = Project.isactive.find(:all, :order => 'LOWER(name) asc') end
这让ActiveAdmin感到困惑。 在我改变之后
before_filter :getActiveProjects protected def getActiveProjects @projects_all = Project.isactive.find(:all, :order => 'LOWER(name) asc') end
和projects_controller索引动作
def index @projects = @projects_all end
一切正常;）
更简单的解决方案是跳过特定活动管理控制器中的filter：
ActiveAdmin.register Project do controller do skip_before_filter :getActiveProjects end end
活动管理员对@resource变量进行特殊处理。 resource是相应的类名传递给register方法。 所以代码：
ActiveAdmin.register Project do end
变量名称是
`@project`
我们不能为具有这样名称的变量赋值。 此类变量也可能是ActiveRecord :: Relation类的对象。 @Oliver如何写出像@projects_all这样的名字是个不错的选择。 skip_before_filter的使用也解决了这个问题。
一件狡猾的事情需要检查。 资源控制器可能没有任何filter。 资源的控制器可能根本不存在。 要放入skip_before_filter的filter名称是什么？ 这样的filter在哪里？ 无论如何都使用默认的应用程序控制器。 filter可以安装在主应用控制器上。 此问题的错误消息根本没有提供信息。 因此，需要检查应用程序控制器是否已安装filter