Question

I’m getting a routing error: No route matches [POST] “/students/1” that I can’t figure out. Here are the details.

view code:

<% @students.each do |student| %>
.
.
    <td><%= link_to 'Show', student %></td>
    <td><%= link_to 'Edit', edit_student_path(student) %></td>
    <td><%= link_to 'Select Subjects', select_path(student) %></td>  # error occurs here

In my students controller:

def select
  .
  .
end

routes.rb:
HomeSchool::Application.routes.draw do

  resources :notes

  resources :assignments

  resources :subjects do
    resources :assignments, :only => [:create, :index, :new]
  end

  resources :students

  resources :resources

  match "students/:id/select" => "students#select", :as => :select

  root :to => 'students#index'

end

The output from rake routes is:

                       GET    /students/:id/select(.:format)                  students/:id#select
                 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
           assignments GET    /assignments(.:format)                          assignments#index
                       POST   /assignments(.:format)                          assignments#create
        new_assignment GET    /assignments/new(.:format)                      assignments#new
       edit_assignment GET    /assignments/:id/edit(.:format)                 assignments#edit
            assignment GET    /assignments/:id(.:format)                      assignments#show
                       PUT    /assignments/:id(.:format)                      assignments#update
                       DELETE /assignments/:id(.:format)                      assignments#destroy
   subject_assignments GET    /subjects/:subject_id/assignments(.:format)     assignments#index
                       POST   /subjects/:subject_id/assignments(.:format)     assignments#create
new_subject_assignment GET    /subjects/:subject_id/assignments/new(.:format) assignments#new
              subjects GET    /subjects(.:format)                             subjects#index
                       POST   /subjects(.:format)                             subjects#create
           new_subject GET    /subjects/new(.:format)                         subjects#new
          edit_subject GET    /subjects/:id/edit(.:format)                    subjects#edit
               subject GET    /subjects/:id(.:format)                         subjects#show
                       PUT    /subjects/:id(.:format)                         subjects#update
                       DELETE /subjects/:id(.:format)                         subjects#destroy
              students GET    /students(.:format)                             students#index
                       POST   /students(.:format)                             students#create
           new_student GET    /students/new(.:format)                         students#new
          edit_student GET    /students/:id/edit(.:format)                    students#edit
               student GET    /students/:id(.:format)                         students#show
                       PUT    /students/:id(.:format)                         students#update
                       DELETE /students/:id(.:format)                         students#destroy
             resources GET    /resources(.:format)                            resources#index
                       POST   /resources(.:format)                            resources#create
          new_resource GET    /resources/new(.:format)                        resources#new
         edit_resource GET    /resources/:id/edit(.:format)                   resources#edit
              resource GET    /resources/:id(.:format)                        resources#show
                       PUT    /resources/:id(.:format)                        resources#update
                       DELETE /resources/:id(.:format)                        resources#destroy
                select        /students/:id/select(.:format)                  students#select
                  root        /                                               students#index

Any suggestions? I’m having a really hard time grasping exactly how routing in rails is supposed to work and I have yet to find any kind of treatise on it but I’m pretty sure that having no method listed for my select route is at least part of my problem.

Thanks,

Lon

Answer 1

Try removing the match in your routes.rb file and change your students resource to this:

resources :students do
  member do
    get 'select'
  end
end

Also update your view to call select_student_path(student).