messages GET /messages(.:format) messages#index
POST /messages(.:format) messages#create
new_message GET /messages/new(.:format) messages#new
edit_message GET /messages/:id/edit(.:format) messages#edit
message GET /messages/:id(.:format) messages#show
PUT /messages/:id(.:format) messages#update
DELETE /messages/:id(.:format) messages#destroy
GET /messages/archive/:id(.:format) messages#archive
notes GET /notes(.:format) notes#index
POST /notes(.:format) notes#create
new_note GET /notes/new(.:format) notes#new
edit_note GET /notes/:id/edit(.:format) notes#edit
note GET /notes/:id(.:format) notes#show
PUT /notes/:id(.:format) notes#update
DELETE /notes/:id(.:format) notes#destroy
GET /notes/archive/:id(.:format) notes#archive
root / home#main
/:controller(/:action(/:id))(.:format) :controller#:action
但是访问http://localhost:3000/messages/10
出错 No route matches {:action=>"edit", :controller=>"notes", :id=>nil}
你确定你的message#show相关部分没有重定向逻辑或调用edit_note_path什么的？还有你要先查看日志，确定请求是直接访问的messages#show还是直接报错。
如果没有你可以去给 rails 提 issue 了。。
<%= link_to 'Edit', edit_note_path(@note) %> |
<%= link_to 'Back', notes_path %>
后面这点删除就好了，但是这个应该不影响啊
Started GET "/messages/1" for 127.0.0.1 at 2012-07-28 16:06:57 +0800
Processing by MessagesController#show as HTML
Parameters: {"id"=>"1"}
[1m[36mUser Load (0.3ms)[0m [1mSELECT "users".* FROM "users" WHERE "users"."id" = 1 LIMIT 1[0m
[1m[35mActsAsMessageable::Message Load (0.4ms)[0m SELECT "messages".* FROM "messages" WHERE "messages"."id" = 1 AND ((sent_messageable_type = 'User' and
sent_messageable_id = 1 and
sender_delete = 'f' and sender_permanent_delete = 'f') or
(received_messageable_type = 'User' and
received_messageable_id = 1 and
recipient_delete = 'f' and recipient_permanent_delete = 'f')) ORDER BY created_at desc LIMIT 1
[1m[36mActsAsMessageable::Message Load (0.4ms)[0m [1mSELECT "messages".* FROM "messages" WHERE (messages.id = 1 or messages.ancestry like '1/%' or messages.ancestry = '1') ORDER BY created_at desc[0m
Rendered messages/show.html.erb (2.7ms)
Completed 500 Internal Server Error in 10ms
ActionController::RoutingError (No route matches {:action=>"edit", :controller=>"notes", :id=>nil}):
app/views/messages/show.html.erb:18:in `_app_views_messages_show_html_erb__799486363__610448278'
Rendered /var/lib/gems/1.9.1/gems/actionpack-3.2.7/lib/action_dispatch/middleware/templates/rescues/routing_error.erb within rescues/layout (0.8ms)
Started GET "/messages/1" for 127.0.0.1 at 2012-07-28 16:06:57 +0800
Processing by MessagesController#show as HTML
Parameters: {"id"=>"1"}
然后，看具体错误：
ActionController::RoutingError (No route matches {:action=>"edit", :controller=>"notes", :id=>nil}):
app/views/messages/show.html.erb:18:in `_app_views_messages_show_html_erb__799486363__610448278'
是在 app/views/messages/show.html.erb:18 这个文件的第 18 行，可以贴一下代码么
<%= link_to 'Edit', edit_note_path(@note) %> |
<%= link_to 'Back', notes_path %>
应该就是这两句
