NoMethodError in Submissions#show - ruby-on-rails

Question

I'm getting the following error:
NoMethodError in Submissions#show
undefined method `comment_path'
I can login, enter a title and URL, and post a comment. When I hit the "Create Comment button"
this is where it errors out:
<%= link_to 'delete', comment, method: :delete, data: { confirm: 'are you sure?'} %>
Other than the error, I'm trying to ADD a Comment not DELETE one?
_comment.html.erb
<%= div_for(comment) do %>
<div class="comments-wrapper clearfix">
<div class="null-left">
<p><small> <%= comment.user.email %> <strong><%=
time_ago_in_words(comment.created_at) %></strong> ago </small></p>
<p class="lead"><%= comment.body %></p>
</div>
</div>
<% if comment.user == current_user %>
<%= link_to 'delete', comment, method: :delete, data: { confirm:
'are you sure?'} %>
<% end %>
<% end %>
comments_controller.rb
class CommentsController < ApplicationController
before_action :set_comment, only: [:show, :edit, :update, :destroy]
def create
#submission = Submission.find(params[:submission_id])
#comment = #submission.comments.new(comment_params)
#comment.user = current_user
respond_to do |format|
if #comment.save
format.html { redirect_to #submission, notice: 'Comment was successfully created.' }
else
format.html { render :new }
end
end
end
def destroy
#comment.destroy
respond_to do |format|
format.html { redirect_to comments_url, notice: 'Comment was
successfully destroyed.' }
format.json { head :no_content }
end
end
private
def set_comment
#comment = Comment.find(params[:id])
end
def comment_params
params.require(:comment).permit(:submission_id, :body, :user_id)
end
end
submission_controller.rb
class SubmissionsController < ApplicationController
before_action :set_submission, only: [:show, :edit, :update, :destroy]
before_action :authenticate_user!, except: [:index, :show]
def index
#submissions = Submission.all
end
def show
end
def new
#submission = current_user.submissions.build
end
def edit
end
def create
#submission = current_user.submissions.build(submission_params)
respond_to do |format|
if #submission.save
format.html { redirect_to #submission, notice: 'Submission was
successfully created.' }
format.json { render :show, status: :created, location: #submission
}
else
format.html { render :new }
format.json { render json: #submission.errors, status:
:unprocessable_entity }
end
end
end
def update
respond_to do |format|
if #submission.update(submission_params)
format.html { redirect_to #submission, notice: 'Submission was
successfully updated.' }
format.json { render :show, status: :ok, location: #submission }
else
format.html { render :edit }
format.json { render json: #submission.errors, status:
:unprocessable_entity }
end
end
end
def destroy
#submission.destroy
respond_to do |format|
format.html { redirect_to submissions_url, notice: 'Submission was
successfully destroyed.' }
format.json { head :no_content }
end
end
def upvote
#submission = Submisson.find{params[:id]}
#submission.upvote_by current_user
redirect_to :back
end
def downvote
#submission = Submisson.find{params[:id]}
#submission.downvote_by current_user
redirect_to :back
end
private
def set_submission
#submission = Submission.find(params[:id])
end
def submission_params
params.require(:submission).permit(:title, :url)
end
end
routes.rb
Rails.application.routes.draw do
devise_for :users
resources :submissions do
member do
put "Like", to: "submission#upvote"
put "Dislike", to: "submission#downvote"
end
resources :comments
end
root to: "submissions#index"
end

Answer 1

For delete, you need to pass submission id like
Your code
<%= link_to 'delete', comment, method: :delete, data: { confirm: 'are you sure?'} %>
After modified
<%= link_to 'Delete', [comment.submission, comment], method: :delete, data: { confirm: 'Are you sure?' } %>
On the comment form
<%= f.hidden_field :user_id, value: current_user.id %>
Create action on comment controller, remove this two lines
#comment = #submission.comments.new(comment_params)
#comment.user = current_user
After update delete link then test for comment create if not creating comment still then follow the below code.
Now your comment create action look like this
def create
#submission = Submission.find(params[:submission_id])
respond_to do |format|
if #submission.comments.create(comment_params)
format.html { redirect_to #submission, notice: 'Comment was successfully created.' }
else
format.html { render :new }
end
end
end
That code from my project which already working, if not working on your side then if have your public repository then post URL or post full error trace.
Update Based on GitHub Link
If you run the rake routes then you will see the comment delete routes format like
DELETE /submissions/:submission_id/comments/:id(.:format) comments#destroy
You need to pass submission_id plus id for comment delete
Update link_to delete looks like this
<%= link_to 'Delete', [comment.submission, comment], method: :delete, data: { confirm: 'Are you sure?' } %>
And your destroy action looks like this on the comments_controller
def destroy
#submission = Submission.find(params[:submission_id])
#comment = #submission.comments.find(params[:id])
#comment.destroy
redirect_to submission_path(#submission)
end
Hope it helps