在我的Rails 3.1应用程序中,我有一个名为“Child”的模型
resources :children
这是整个routes.rb文本:
root :to => "pages#home" resources :children
以下是完整的rake路由结果(请注意,大多数路由与ActiveAdmin相关):
children GET /children(.:format) {:action=>"index",:controller=>"children"} POST /children(.:format) {:action=>"create",:controller=>"children"} new_child GET /children/new(.:format) {:action=>"new",:controller=>"children"} edit_child GET /children/:id/edit(.:format) {:action=>"edit",:controller=>"children"} child GET /children/:id(.:format) {:action=>"show",:controller=>"children"} PUT /children/:id(.:format) {:action=>"update",:controller=>"children"} DELETE /children/:id(.:format) {:action=>"destroy",:controller=>"children"}
当我运行“rake routes”时,我在结果中看到这一行:
children GET /children(.:format) {:action=>"index",:controller=>"children"}
这是我的ChildrenController中的代码:
def index @children = Child.all @base_class = "children-index" @title = "Your Children" respond_to do |format| format.html # children/index.html.erb format.json { render :json => @children } end end def show @child = Child.find(params[:id]) @base_class = "child-show" @title = child_name(@child) respond_to do |format| format.html # children/show.html.erb format.json { render :json => @child } end end
当我访问网址“/ children”时,我收到此错误:
No route matches {:action=>"show",:controller=>"children"}
这是完整的痕迹:
Started GET "/children" for 127.0.0.1 at 2011-11-07 13:06:24 -0600 Processing by ChildrenController#index as HTML Child Load (0.8ms) SELECT `children`.* FROM `children` Rendered children/index.html.erb within layouts/application (65.0ms) Completed 500 Internal Server Error in 166ms ActionView::Template::Error (No route matches {:action=>"show",:controller=>"children"}): 1: <h1><%= title %></h1> 2: <ul> 3: <%= @children.each do |child| %> 4: <li><%= link_to child.child_name(child),child_path(@child) %></li> 5: <% end %> 6: </ul> app/views/children/index.html.erb:4:in `block in _app_views_children_index_html_erb__674498165009231817_70298485459960' app/views/children/index.html.erb:3:in `each' app/views/children/index.html.erb:3:in `_app_views_children_index_html_erb__674498165009231817_70298485459960' app/controllers/children_controller.rb:9:in `index' Rendered /.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.1.0/lib/action_dispatch/middleware/templates/rescues/routing_error.erb within rescues/layout (0.5ms)
为什么“/ children”试图执行“show”动作,为什么show动作就像路线那样?到目前为止,我所有的其他模型都使用“资源:模型”指令工作得很好.
解决方法
在服务器输出中我们有这个:
由ChildrenController处理#index为HTML
确认路线是正确的.
由ChildrenController处理#index为HTML
确认路线是正确的.
但是在模板中,您使用的是服务器找不到的路径.
ActionView :: Template :: Error(没有路由匹配{:action =>“show”,:controller =>“children”}):
1: <h1><%= title %></h1> 2: <ul> 3: <%= @children.each do |child| %> 4: <li><%= link_to child.child_name(child),child_path(@child) %></li> 5: <% end %> 6: </ul>
更确切地说,在第4行你遇到了一个问题,可能在这里:child_path(@child)
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