Creating my first blog with ruby on rails

rubyonrails-talk
1

I am trying to create my first ever program Using Ruby programming language on Ruby on Rails and it is a blog! I am following a tutorial and have created a comments box which does NOT print the comment on the page so far when written in the comments box, that's the problem. I will explain step by step I have:

1. Called out on routes.rb:

resources :posts do resources :comments end

2. Called out using Cmder: rails g controller comments create destroy

3. This is my comments_controller.rb class:

class CommentsController < ApplicationController   def create     @post = Post.find(params[:post_id])     @comment = @post.comments.build(params[:comment]) #around here is the error     @comment.save

    redirect_to @post   end

  def destroy   end end

can anybody please help?

2

The routes don’t matter here.

Firstly, it should be @comment = @post.comments.create instead of build, no point in building something and saving it afterwards.

Secondly, the comment won’t be created because the parameters for the comment are not being sanitized. If rails allowed you to do what you are wanting to do here it would be a terrible security issue.

See ActionController::StrongParameters

3

If you change it to @comment.save! does the response work equally as well or do you get an error.

Try putting a debugger (see pry for Ruby < 2 or byebug for Ruby 2) line on the line before @comment.save, run the code (actually run the test!) and on the debugger line type "@comment.save" and see what it says.

4

Thank you for your help guys I have managed to solve the problem. Great advice I really appreciate it.