How can I delete comments in a rails blog app? - ruby-on-rails

Question

I'm new to rails, I have followed the Blogger tutorial from Jumpstart Labs to make a blogging app, and I am trying to implement a feature that will allow users who are logged in to delete comments on articles.
but I keep getting confused by this error message "ActiveRecord::RecordNotFound in CommentsController#destroy
Couldn't find Article with 'id'="
here's what I've managed so far,
this is my app/controllers/comments_controller.rb
class CommentsController < ApplicationController
before_filter :require_login, except: [:create]
def create
#comment = Comment.new(comment_params)
#comment.article_id = params[:article_id]
#comment.save
redirect_to article_path(#comment.article)
end
def destroy
#article = Article.find(params[:article_id])
#comment = #article.comments.find(params[:id])
#comment.destroy
redirect_to article_path(#article)
end
private
def comment_params
params.require(:comment).permit(:author_name, :body)
end
end
and my /views/articles/show.html.erb
<h1><%= #article.title %></h1>
<p>
<b>Posted on <%= #article.created_at.strftime("%B %d %Y") %></b>
</p>
<p>
<% if #article.image.exists? %>
<%= image_tag #article.image.url%>
<% end %>
</p>
<p><%= #article.body %></p>
<%= render partial: 'comments/form' %>
<% if logged_in? %>
<%= link_to "Edit", edit_article_path(#article) %>
<%= link_to "delete", article_path(#article), method: :delete%>
<% end %>
<%= link_to "<< Back to Articles List", articles_path %>
<h3>Comments (<%=#article.comments.size %>) </h3>
<%= render partial: 'articles/comment',
collection: #article.comments %>
<p>
Tags:
<% #article.tags.each do |tag| %>
<%= link_to tag.name, tag_path(tag) %>
<% end %>
</p>
app/views/articles/comment.html.erb
<div>
<p><b>Comment by:</b> <%= comment.author_name %></p>
<p class="comment"><%= comment.body %></p>
<p>Posted <%= distance_of_time_in_words(comment.article.created_at, comment.created_at) %> later</p>
<%= link_to 'Delete Comment', article_comment(article, comment), method: :delete, data: { confirm: 'Are you sure?' } %>
</div>
routes.rb
Blogger::Application.routes.draw do
get 'about', to: 'info#about'
get 'portfolio', to: 'info#portfolio'
get 'contact', to: 'info#contact'
root to: 'articles#index'
resources :articles do
resources :comments
end
resources :tags
resources :authors
resources :author_sessions, only: [ :new, :create, :destroy ]
get 'login' => 'author_sessions#new'
get 'logout' => 'author_sessions#destroy'
end
and my articles_controller
class ArticlesController < ApplicationController
include ArticlesHelper
before_filter :require_login, only: [:new, :create, :edit, :update, :destroy]
def index
#articles = Article.all
end
def new
#article = Article.new
end
def create
#article = Article.new(article_params)
#article.save
flash.notice = "Article '#{#article.title}' Created!"
redirect_to article_path(#article)
end
def show
#article = Article.find(params[:id])
#comment = Comment.new
#comment.article_id = #article.id
end
def edit
#article = Article.find(params[:id])
end
def update
#article = Article.find(params[:id])
#article.update(article_params)
flash.notice = "Article '#{#article.title}' Updated!"
redirect_to article_path(#article)
end
def destroy
#article = Article.find(params[:id])
#article.destroy
flash.notice = "Article '#{#article.title}' Deleted!"
redirect_to articles_path
end
end
Any input or advice greatly appreciated, I've been looking around google and stack overflow for a while but I haven't found a solution yet

Answer 1

The error NameError in Articles#show undefined local variable or method article can be fixed by changing this line in app/views/articles/_comment.html.erb (I believe it has _)
from
<%= link_to 'Delete Comment', article_comment(article, comment), method: :delete, data: { confirm: 'Are you sure?' } %>
to
<%= link_to 'Delete Comment', article_comment_path(comment.article, comment), method: :delete, data: { confirm: 'Are you sure?' } %>
And in views/articles/show.html.erb, try to change collection: #article.comments to collection: #article.comments.all.

Answer 2

To get past that particular error your having you need to permit the :id and :article_id params
Add them like this
params.require(:comment).permit(:author_name, :body, :id, :article_id)