Cannot Edit or View Post with Comments App - ruby-on-rails

Question

I have built a simple Rails app that has posts with one/many comments.
I want to create a simple post view that allows me to view the post and associated comments. I want each comment to have links to - view, edit, delete.
However whenever I try amending the code below I get routing errors. Help?
routes.rb
resources :posts do
resources :comments
end
rake routes
post_comments GET /posts/:post_id/comments(.:format) comments#index
POST /posts/:post_id/comments(.:format) comments#create
new_post_comment GET /posts/:post_id/comments/new(.:format) comments#new
edit_post_comment GET /posts/:post_id/comments/:id/edit(.:format) comments#edit
post_comment GET /posts/:post_id/comments/:id(.:format) comments#show
PUT /posts/:post_id/comments/:id(.:format) comments#update
DELETE /posts/:post_id/comments/:id(.:format) comments#destroy
comments_controller.rb
def show
#comment = Comment.find(params[:id])
respond_to do |format|
format.html
format.json { render :json => #post }
end
end
def edit
#comment = Comment.find(params[:id])
end
comments\show.html.erb
<p>
<b>Commenter:</b>
<%= #comment.user_id %>
</p>
<p>
<b>Comment:</b>
<%= #comment.text %>
</p>
<%= link_to 'View Comment', comment_path(?) %> |
<%= link_to 'Edit Comment', edit_comment_path(?) %> |
<%= link_to 'Delete Comment', [#post, comment],
:confirm => 'Are you sure?',
:method => :delete %></p>

Answer 1

Are you seeing:
Routing Error
No route matches {:action=>"show", :controller=>"comments"}
Try running rake routes for more information on available routes.
I duplicated your project with the code you provided and only received that routing error because there wasn't an id being passed to the route helper methods. Because these are restful routes, the format for View Comment should be /comments/:id(.:format).
I was able to resolve this error by passing an id or comment object to the comment_path and edit_comment_path helper methods like so:
<%= link_to 'View Comment', comment_path(2) %> |
<%= link_to 'Edit Comment', edit_comment_path(3) %> |
<%= link_to 'Delete Comment', [#post, comment],
:confirm => 'Are you sure?',
:method => :delete %></p>
Obviously you would want to populate them with the correct ids or comment objects rather than just some random id.
Hope this helps.
Cheers!