How do I create a named_route_path for a scoped/nested resource in rails 3.1?

问题

This is my route:

scope ":username" do
  resources :feedbacks
end

When I do rake routes, I get this:

    feedbacks GET    /:username/feedbacks(.:format)          {:action=>"index", :controller=>"feedbacks"}
              POST   /:username/feedbacks(.:format)          {:action=>"create", :controller=>"feedbacks"}
 new_feedback GET    /:username/feedbacks/new(.:format)      {:action=>"new", :controller=>"feedbacks"}
edit_feedback GET    /:username/feedbacks/:id/edit(.:format) {:action=>"edit", :controller=>"feedbacks"}
     feedback GET    /:username/feedbacks/:id(.:format)      {:action=>"show", :controller=>"feedbacks"}
              PUT    /:username/feedbacks/:id(.:format)      {:action=>"update", :controller=>"feedbacks"}
              DELETE /:username/feedbacks/:id(.:format)      {:action=>"destroy", :controller=>"feedbacks"}

But when I do feedbacks_url or feedbacks_path I get an routing error like this:

No route matches {:controller=>"feedbacks", :format=>nil}

From the log file:

Rendered users/show.html.erb within layouts/application (18.3ms)
Completed 500 Internal Server Error in 142ms

ActionView::Template::Error (No route matches {:controller=>"feedbacks", :format=>nil}):
    1: <%= form_for(@feedback) do |f| %>
    2:   <% if @feedback.errors.any? %>
    3:     <div id="error_explanation">
    4:       <h2><%= pluralize(@feedback.errors.count, "error") %> prohibited this feedback from being saved:</h2>
  app/views/feedbacks/_form.html.erb:1:in `_app_views_feedbacks__form_html_erb__2195884682603870163_2484875900'
  app/views/users/show.html.erb:11:in `_app_views_users_show_html_erb__3889159515317937411_2159438040'
  app/controllers/vanities_controller.rb:14:in `show'

This is the form partial feedbacks/_form.html.erb:

<%= form_for(@feedback) do |f| %>
  <% if @feedback.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@feedback.errors.count, "error") %> prohibited this feedback from being saved:</h2>

      <ul>
      <% @feedback.errors.full_messages.each do |msg| %>
        <li><%= msg %></li>
      <% end %>
      </ul>
    </div>
  <% end %>

  <% if current_user %>

       <div class="poster_id">
        <%= f.hidden_field "poster_id", :value => current_user.id %><br />
       </div>
       <div class="receiver_id">
         <%= f.hidden_field "receiver_id", :value => @user.id %><br />
       </div>
       <div class="field">
         <%= f.text_field :content %>
       </div>
       <div class="actions">
         <%= f.submit %>
       </div>

   <% end %>


<% end %>

Thoughts?

回答1:

Well,

scope ":username" do

means that your routes need some info about :username to work properly.

You should then add this info in all your links:

user_path(user, :username => "joe")
edit_user_path(user, :username => "joe")
...

Or you could tell your app the username isn't mandatory which seems logic if user isn't created yet. So change your route to:

scope "(:username)" do
  resources :feedbacks
end

来源：https://stackoverflow.com/questions/7843370/how-do-i-create-a-named-route-path-for-a-scoped-nested-resource-in-rails-3-1

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ruby-on-rails

ruby-on-rails-3

ruby-on-rails-3.1