CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-4
Christian Cruz
Christian Cruz

Reputation: 3

Rails: Redirecting to post after comment submission

I have a form to submit comments on posts.
After submitting comments, the user should be redirected to the post.

I am getting the following error when I hit the "submit" button:

NameError in CommentsController#create undefined local variable or method `post' for CommentsController...

The error points to the following line in my comments controller:

redirect_to post_path(@post)

Here's my comments_controller.rb:

class CommentsController < ApplicationController

before_action :authenticate_user!

def create
  @topic = Topic.find(params[:topic_id])
  @post = @topic.posts.find(params[:post_id])

  @comment = Comment.new(comment_params)
  @comment.post = @post

  redirect_to post_path(@post)
end

private

def comment_params
    params.require(:comment).permit(:title, :body)
  end
end

And here's my route file:

Rclone::Application.routes.draw do
  get "comments/create"
  devise_for :users
  resources :users, only: [:update]

  resources :topics do
    resources :posts, except: [:index] do
      resources :comments, only: [:create]
    end
  end

  get '/posts/:id/comments', to: 'posts#show'

  get 'about' => 'welcome#about'

  root to: 'welcome#index'
end

What am I doing wrong on the routes file?

Upvotes: 0

Views: 100

Answers (1)

Aditya Shedge
Aditya Shedge

Reputation: 386

Comment.new will not presist or create the post. You need to do @comment.save. Also use pry and pry-nav gem to debug such errors. pry will halt the execution of you program where it finds binding.pry. From that point onwards you can execute your program line by line. Just insert binding.pry one line before where you want to halt execution.

example 

def create
  binding.pry
  @topic = Topic.find(params[:topic_id])

Check you params hash and you will find your bug. My guess is you are going wrong with topic_id or post_id

Links:
http://pryrepl.org/
https://github.com/pry/pry

Upvotes: 1

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