VitorRibeiroCustodio

import React from 'react';
import {Editor, EditorState} from 'draft-js';
import 'draft-js/dist/Draft.css';

class App extends React.Component {
  constructor(props) {
    super(props);
    this.state = {editorState: EditorState.createEmpty()};
    this.onChange = editorState => this.setState({editorState});
  }

VitorRibeiroCustodio

    before_action :set_post
    def create 
        @post.comments.create! comments_params
        redirect_to @post
    end
    def set_post 
        @post = Post.find(params[:post_id])
    end
    def comments_params
        params.required(:comment).permit(:body)

VitorRibeiroCustodio

<%= form_for([@post, Comment.new], remote: true) do |form| %>
    Your comment: <br>
    <%= form.text_area :body, size: '50x20' %><br>
    <%= form.submit %>
<% end %> 

VitorRibeiroCustodio

<p><%= comment.body %> -- <%= comment.created_at.to_s(:long) %> </p>

VitorRibeiroCustodio

<br><br>

<h3>Comments</h3>


  <div>
    <%= render @post.comments %>
  </div>

  <%= render 'comments/new', post: @post %>

VitorRibeiroCustodio

Rails.application.routes.draw do
  resources :posts do 
    resources :comments
  end
  # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
end

VitorRibeiroCustodio

class Post < ApplicationRecord 
  has_many :comments
 
  validates_presence_of :title

end

VitorRibeiroCustodio

class Post < ApplicationRecord
 
  validates_presence_of :title

end