How do I delete a comment associated with a post?

Question

I'm currently following along the basic Rails guide for creating a blog and I'm having trouble with deleting my comments associated with the post.

Here is my comments controller:

class CommentsController < ApplicationController
 def create
  @post = Post.find(params[:post_id])
  @comment = @post.comments.create(params[:comment].permit(:commenter, :body))
  redirect_to post_path(@post)
 end

 def destroy
  @post = Post.find params[:post_id]
  @comment = @post.comments.find params[:id]
  @comment.destroy
  redirect_to post_path(@post)
 end
end

In my views, the destroy action isn't firing at all. So I can't even use the console as a tool to solve the problem.

Here is the views partial for comments:

 h2 Comments
 - @post.comments.each do |comment|
  p
   strong Commenter:
   = comment.commenter
  p
   strong Comment:
   = comment.body
  p = link_to "Delete Comment", [comment.post, comment],
  method: :delete,
  data: { confirm: 'Are you sure?' }

Generated html for the delete link:

<a data-confirm="Are you sure?" data-method="delete" href="/posts/9/comments/2"
rel="nofollow">Delete Comment</a>

Even my destroy action for posts is not making any requests, which makes me think the problem mightve been when I moved to partials.

Inside the console I can still delete a comment by finding the post by its post_id, then finding the comment associated with the post and destroying it. For some reason I can't figure out why the views link won't do anything.

Answer 1

Please, first of all be sure to place the correct indentation in your template, this may mess up things. Te last paragraph with the anchor link seems to be mistyped:

h2 Comments
- @post.comments.each do |comment|
  p
    strong Commenter:
    = comment.commenter
  p
    strong Comment:
    = comment.body
  p 
    = link_to "Delete Comment", [comment.post, comment], method: :delete, data: { confirm: 'Are you sure?' }

Then, you should look at the rails server logs to see what happens when you click on the link. If the HTML link looks fine, a call to the server must be there, with all the information you need to debug the call.

Answer 2

1. first, you use Post.find(params[:id]) to retrieve the post you want to delete.
2. second you use @comment = @post.comments.where(post_id: @post.id) to retrieve all the comments that related to the post you deleted, where statment retrieve all results not only the first occurrence.

3. finally, you loop on these comments and destroy them.

   @post = Post.find(params[:id])
   @comment = @post.comments.where(post_id: @post.id) 
   @comment.each do |comment|
       comment.destroy
   end