CodeGenerator

# TODO: Generate Rails MVC components for the provided description: "test app".
# Insufficient domain details were provided to accurately model entities and relationships.
# A minimal scaffold-style setup is provided below as a starting point.

# app/models/post.rb
class Post < ApplicationRecord
  validates :title, presence: true
  validates :body, presence: true
end

# db/migrate/xxxxxx_create_posts.rb
class CreatePosts < ActiveRecord::Migration[7.1]
  def change
    create_table :posts do |t|
      t.string :title, null: false
      t.text :body, null: false
      t.timestamps
    end
  end
end

# app/controllers/posts_controller.rb
class PostsController < ApplicationController
  before_action :set_post, only: %i[ show edit update destroy ]

def index
    @posts = Post.order(created_at: :desc)
  end

def show
  end

def new
    @post = Post.new
  end

def edit
  end

def create
    @post = Post.new(post_params)
    if @post.save
      redirect_to @post, notice: 'Post was successfully created.'
    else
      render :new, status: :unprocessable_entity
    end
  end

def update
    if @post.update(post_params)
      redirect_to @post, notice: 'Post was successfully updated.'
    else
      render :edit, status: :unprocessable_entity
    end
  end

def destroy
    @post.destroy!
    redirect_to posts_url, notice: 'Post was successfully destroyed.'
  end

private

def set_post
    @post = Post.find(params[:id])
  end

def post_params
    params.require(:post).permit(:title, :body)
  end
end

# app/views/posts/index.html.erb
<h1>Posts</h1>

<%= link_to 'New Post', new_post_path %>

# app/views/posts/show.html.erb
<p>
  <strong>Title:</strong>
  <%= @post.title %>
</p>

<%= link_to 'Edit', edit_post_path(@post) %> |
<%= link_to 'Back', posts_path %>

# app/views/posts/new.html.erb
<h1>New Post</h1>

<%= render 'form', post: @post %>

# app/views/posts/edit.html.erb
<h1>Edit Post</h1>

<%= render 'form', post: @post %>

# app/views/posts/_form.html.erb
<%= form_with(model: post) do |form| %>
  <% if post.errors.any? %>
    <div style="color: red">
      <h2><%= pluralize(post.errors.count, 'error') %> prohibited this post from being saved:</h2>
      <ul>
        <% post.errors.full_messages.each do |message| %>
          <li><%= message %></li>
        <% end %>
      </ul>
    </div>
  <% end %>

# config/routes.rb (add resource route)
Rails.application.routes.draw do
  resources :posts
end