Routing error for no route matches when action is clearly in controller

Question

I think it is a routing issue where the controller is not matched properly. I am confused because there is clearly a new action in my ComicTitlesController.

Here is the error I receive when I load the home page, which has the new_user_comic_title_path in the navbar:

Routing Error

No route matches {:action=>"new", :controller=>"comic_titles"}
Try running rake routes for more information on available routes.

In my views:

<li><%= link_to 'Publish' , new_user_comic_title_path %></li>

The ComicTitles controller:

  def new
    @user = current_user
    @comic_title = @user.comic_titles.new
  end

Note that ComicTitle is nested under User. Here is the route file:

  resources :users, shallow: true do
    resources :comic_titles
  end

When I run rake routes:

 user_comic_titles GET    /users/:user_id/comic_titles(.:format)             comic_titles#index
                     POST   /users/:user_id/comic_titles(.:format)             comic_titles#create
new_user_comic_title GET    /users/:user_id/comic_titles/new(.:format)         comic_titles#new
    edit_comic_title GET    /comic_titles/:id/edit(.:format)                   comic_titles#edit
         comic_title GET    /comic_titles/:id(.:format)                        comic_titles#show
                     PUT    /comic_titles/:id(.:format)                        comic_titles#update
                     DELETE /comic_titles/:id(.:format)                        comic_titles#destroy

Answer 1

Since you have a nested route, I believe the route is expecting a user_id parameter.

In your link_to helper try adding the following:

<li><%= link_to 'Publish' , new_user_comic_title_path(user_id: current_user.id) %></li>

Answer 2

As you can see the route requires parameter :user_id and your link_to is missing that parameter.

Try updating your link_to definition to following:

<li><%= link_to 'Publish' , new_user_comic_title_path(@user) %></li>