Nested routes with polymorphic association - ruby-on-rails

Question

I'm trying to implement the act_as_votable gem in my rails application. I got it to work on the blogs model, but the comments model is where I'm stuck. I get undefined methodlike_comment_path'` when I try to run it, and it's because there are no routes being generated like there are for the blog.
Here is the routes file:
resources :blogs do
member do
put 'like', to: 'blogs#upvote'
put 'dislike', to: 'blogs#downvote'
end
resources :comments
member do
put 'like', to: 'comments#upvote'
put 'dislike', to: 'comments#downvote'
end
end
On the blog index, I am able to call the blog like path just fine.
<div class="btn-group">
<%= link_to like_blog_path(blog), method: :put, class: "btn btn-default btn-sm" do %>
<span class="glyphicon glyphicon-chevron-up"></span>
Upvote
<%= blog.get_upvotes.size %>
<% end %>
<%= link_to dislike_blog_path(blog), method: :put, class: "btn btn-default btn-sm" do %>
<span class="glyphicon glyphicon-chevron-down"></span>
Downvote
<%= blog.get_downvotes.size %>
<% end %>
</div>
I run into trouble, though, with the comment part.
<div class="btn-group">
<%= link_to like_comment_path(#commentable, comment), method: :put, class: "btn btn-default btn-sm" do %>
<span class="glyphicon glyphicon-chevron-up"></span>
Upvote
<%= comment.get_upvotes.size %>
<% end %>
<%= link_to dislike_comment_path(#commentable, comment), method: :put, class: "btn btn-default btn-sm" do %>
<span class="glyphicon glyphicon-chevron-down"></span>
Downvote
<%= comment.get_downvotes.size %>
<% end %>
</div>
When I run rake routes, nothing for the comments comes up.
Prefix Verb URI Pattern Controller#Action
root GET / glips#index
pages_home GET /pages/home(.:format) pages#home
pages_about GET /pages/about(.:format) pages#about
pages_contact GET /pages/contact(.:format) pages#contact
tag GET /tags/:tag(.:format) glips#index
new_user_session GET /login(.:format) devise/sessions#new
user_session POST /login(.:format) devise/sessions#create
destroy_user_session DELETE /logout(.:format) devise/sessions#destroy
new_user_password GET /password/new(.:format) devise/passwords#new
edit_user_password GET /password/edit(.:format) devise/passwords#edit
user_password PATCH /password(.:format) devise/passwords#update
PUT /password(.:format) devise/passwords#update
POST /password(.:format) devise/passwords#create
cancel_user_registration GET /cancel(.:format) devise/registrations#cancel
new_user_registration GET /register(.:format) devise/registrations#new
edit_user_registration GET /edit(.:format) devise/registrations#edit
user_registration PATCH / devise/registrations#update
PUT / devise/registrations#update
DELETE / devise/registrations#destroy
POST / devise/registrations#create
like_blog PUT /blogs/:id/like(.:format) blogs#upvote
dislike_blog PUT /blogs/:id/dislike(.:format) blogs#downvote
blog_comments GET /blogs/:blog_id/comments(.:format) comments#index
POST /blogs/:blog_id/comments(.:format) comments#create
new_blog_comment GET /blogs/:blog_id/comments/new(.:format) comments#new
edit_blog_comment GET /blogs/:blog_id/comments/:id/edit(.:format) comments#edit
blog_comment GET /blogs/:blog_id/comments/:id(.:format) comments#show
PATCH /blogs/:blog_id/comments/:id(.:format) comments#update
PUT /blogs/:blog_id/comments/:id(.:format) comments#update
DELETE /blogs/:blog_id/comments/:id(.:format) comments#destroy
PUT /blogs/:id/like(.:format) comments#upvote
PUT /blogs/:id/dislike(.:format) comments#downvote
blogs GET /blogs(.:format) blogs#index
POST /blogs(.:format) blogs#create
new_blog GET /blogs/new(.:format) blogs#new
edit_blog GET /blogs/:id/edit(.:format) blogs#edit
blog GET /blogs/:id(.:format) blogs#show
PATCH /blogs/:id(.:format) blogs#update
PUT /blogs/:id(.:format) blogs#update
DELETE /blogs/:id(.:format) blogs#destroy
users GET /users(.:format) users#index
GET /users/:id(.:format) users#show
user GET /users/:id(.:format) users#show
I cannot figure out how to make the comment path work with the routes. What am I doing wrong?

Answer 1

Are you looking for nesting the :comments resource inside :blogs? Otherwise your routes should look like:
resources :blogs do
member do
put 'like', to: 'blogs#upvote'
put 'dislike', to: 'blogs#downvote'
end
end
resources :comments do
member do
put 'like', to: 'comments#upvote'
put 'dislike', to: 'comments#downvote'
end
end
(note you had a missing do at beginning of the :comments block which resulted in a weird block ending/nesting)