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Add post scaffold and fix the failure of the installation script :(
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lines changed

‎app/assets/stylesheets/application.tailwind.css

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@import "@afomera/richer-text/dist/css/richer-text.css";
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@import "highlight.js/styles/github-dark.css";
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@import "richer-text.css";
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/* @import "@afomera/richer-text/dist/css/richer-text.css"; */
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/* @import "highlight.js/styles/github-dark"; */
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@tailwind base;
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@tailwind components;
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@tailwind utilities;
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.richer-text table {
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border-collapse: collapse;
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margin: 0;
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overflow: hidden;
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table-layout: fixed;
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width: 100%;
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}
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.richer-text table td,
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.richer-text table th {
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border: 2px solid #ced4da;
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box-sizing: border-box;
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min-width: 1em;
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padding: 3px 5px;
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position: relative;
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vertical-align: top;
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}
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.richer-text table td>*,
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.richer-text table th>* {
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margin-top: 0;
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margin-bottom: 0;
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}
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.richer-text table th {
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background-color: #f1f3f5;
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font-weight: bold;
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text-align: left;
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}
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.richer-text p {
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margin: 0;
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}
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.richer-text img {
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width: auto;
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}
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.richer-text blockquote {
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border-left: 2px solid #ced4da;
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margin: 1rem 0.5rem;
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padding: 0 0 0 10px;
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}
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/*
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@layer components {

‎app/controllers/posts_controller.rb

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class PostsController < ApplicationController
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before_action :set_post, only: %i[ show edit update destroy ]
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# GET /posts or /posts.json
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def index
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@posts = Post.all
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end
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# GET /posts/1 or /posts/1.json
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def show
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end
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# GET /posts/new
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def new
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@post = Post.new
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end
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# GET /posts/1/edit
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def edit
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end
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# POST /posts or /posts.json
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def create
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@post = Post.new(post_params)
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respond_to do |format|
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if @post.save
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format.html { redirect_to @post, notice: "Post was successfully created." }
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format.json { render :show, status: :created, location: @post }
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else
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format.html { render :new, status: :unprocessable_entity }
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format.json { render json: @post.errors, status: :unprocessable_entity }
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end
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end
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end
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# PATCH/PUT /posts/1 or /posts/1.json
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def update
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respond_to do |format|
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if @post.update(post_params)
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format.html { redirect_to @post, notice: "Post was successfully updated." }
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format.json { render :show, status: :ok, location: @post }
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else
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format.html { render :edit, status: :unprocessable_entity }
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format.json { render json: @post.errors, status: :unprocessable_entity }
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end
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end
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end
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# DELETE /posts/1 or /posts/1.json
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def destroy
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@post.destroy!
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respond_to do |format|
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format.html { redirect_to posts_path, status: :see_other, notice: "Post was successfully destroyed." }
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format.json { head :no_content }
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end
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end
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private
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# Use callbacks to share common setup or constraints between actions.
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def set_post
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@post = Post.find(params.expect(:id))
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end
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# Only allow a list of trusted parameters through.
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def post_params
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params.expect(post: [ :content ])
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end
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end

‎app/helpers/posts_helper.rb

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module PostsHelper
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end

‎app/models/post.rb

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class Post < ApplicationRecord
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has_richer_text :content, store_as: :json
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end

‎app/views/posts/_form.html.erb

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<%= form_with(model: post, class: "contents") do |form| %>
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<% if post.errors.any? %>
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<div id="error_explanation" class="bg-red-50 text-red-500 px-3 py-2 font-medium rounded-lg mt-3">
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<h2><%= pluralize(post.errors.count, "error") %> prohibited this post from being saved:</h2>
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<ul>
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<% post.errors.each do |error| %>
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<li><%= error.full_message %></li>
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<% end %>
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</ul>
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</div>
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<% end %>
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<div class="my-5 w-[500px]">
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<%= form.label :content %>
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<%= form.richer_text_area :content, class: "w-full" %>
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</div>
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<div class="inline">
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<%= form.submit class: "rounded-lg py-3 px-5 bg-blue-600 text-white inline-block font-medium cursor-pointer" %>
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</div>
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<% end %>

‎app/views/posts/_post.html.erb

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<div id="<%= dom_id post %>">
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<p class="my-5">
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<strong class="block font-medium mb-1">Content:</strong>
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<%= post.content %>
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</p>
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</div>

‎app/views/posts/_post.json.jbuilder

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json.extract! post, :id, :content, :created_at, :updated_at
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json.url post_url(post, format: :json)
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json.content post.content.to_s

‎app/views/posts/edit.html.erb

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<div class="mx-auto md:w-2/3 w-full">
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<h1 class="font-bold text-4xl">Editing post</h1>
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<%= render "form", post: @post %>
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<%= link_to "Show this post", @post, class: "ml-2 rounded-lg py-3 px-5 bg-gray-100 inline-block font-medium" %>
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<%= link_to "Back to posts", posts_path, class: "ml-2 rounded-lg py-3 px-5 bg-gray-100 inline-block font-medium" %>
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</div>

‎app/views/posts/index.html.erb

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<div class="w-full">
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<% if notice.present? %>
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<p class="py-2 px-3 bg-green-50 mb-5 text-green-500 font-medium rounded-lg inline-block" id="notice"><%= notice %></p>
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<% end %>
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<% content_for :title, "Posts" %>
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<div class="flex justify-between items-center">
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<h1 class="font-bold text-4xl">Posts</h1>
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<%= link_to "New post", new_post_path, class: "rounded-lg py-3 px-5 bg-blue-600 text-white block font-medium" %>
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</div>
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<div id="posts" class="min-w-full">
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<% @posts.each do |post| %>
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<%= render post %>
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<p>
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<%= link_to "Show this post", post, class: "ml-2 rounded-lg py-3 px-5 bg-gray-100 inline-block font-medium" %>
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</p>
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<% end %>
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</div>
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</div>

‎app/views/posts/index.json.jbuilder

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json.array! @posts, partial: "posts/post", as: :post

‎app/views/posts/new.html.erb

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<div class="mx-auto md:w-2/3 w-full">
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<h1 class="font-bold text-4xl">New post</h1>
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<%= render "form", post: @post %>
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<%= link_to "Back to posts", posts_path, class: "ml-2 rounded-lg py-3 px-5 bg-gray-100 inline-block font-medium" %>
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</div>

‎app/views/posts/show.html.erb

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<div class="mx-auto md:w-2/3 w-full flex">
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<div class="mx-auto">
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<% if notice.present? %>
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<p class="py-2 px-3 bg-green-50 mb-5 text-green-500 font-medium rounded-lg inline-block" id="notice"><%= notice %></p>
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<% end %>
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<%= render @post %>
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<%= link_to "Edit this post", edit_post_path(@post), class: "mt-2 rounded-lg py-3 px-5 bg-gray-100 inline-block font-medium" %>
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<%= link_to "Back to posts", posts_path, class: "ml-2 rounded-lg py-3 px-5 bg-gray-100 inline-block font-medium" %>
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<div class="inline-block ml-2">
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<%= button_to "Destroy this post", @post, method: :delete, class: "mt-2 rounded-lg py-3 px-5 bg-gray-100 font-medium" %>
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</div>
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</div>
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</div>

‎app/views/posts/show.json.jbuilder

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json.partial! "posts/post", post: @post

‎config/initializers/assets.rb

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# Add additional assets to the asset load path.
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# Rails.application.config.assets.paths << Emoji.images_path
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# Rails.application.config.assets.paths << ""

‎config/routes.rb

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Rails.application.routes.draw do
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resources :posts
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# Define your application routes per the DSL in https://guides.rubyonrails.org/routing.html
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# Reveal health status on /up that returns 200 if the app boots with no exceptions, otherwise 500.

‎db/migrate/20241128192705_create_posts.rb

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class CreatePosts < ActiveRecord::Migration[8.0]
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def change
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create_table :posts do |t|
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t.timestamps
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end
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end
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end

‎db/schema.rb

+6-1
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‎test/controllers/posts_controller_test.rb

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require "test_helper"
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class PostsControllerTest < ActionDispatch::IntegrationTest
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setup do
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@post = posts(:one)
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end
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test "should get index" do
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get posts_url
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assert_response :success
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end
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test "should get new" do
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get new_post_url
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assert_response :success
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end
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test "should create post" do
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assert_difference("Post.count") do
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post posts_url, params: { post: {} }
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end
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assert_redirected_to post_url(Post.last)
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end
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test "should show post" do
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get post_url(@post)
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assert_response :success
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end
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test "should get edit" do
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get edit_post_url(@post)
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assert_response :success
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end
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test "should update post" do
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patch post_url(@post), params: { post: {} }
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assert_redirected_to post_url(@post)
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end
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test "should destroy post" do
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assert_difference("Post.count", -1) do
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delete post_url(@post)
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end
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assert_redirected_to posts_url
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end
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end

‎test/fixtures/posts.yml

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# Read about fixtures at https://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
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one:
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two:

‎test/models/post_test.rb

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require "test_helper"
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class PostTest < ActiveSupport::TestCase
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# test "the truth" do
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# assert true
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# end
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end

‎test/system/posts_test.rb

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require "application_system_test_case"
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class PostsTest < ApplicationSystemTestCase
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setup do
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@post = posts(:one)
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end
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test "visiting the index" do
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visit posts_url
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assert_selector "h1", text: "Posts"
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end
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test "should create post" do
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visit posts_url
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click_on "New post"
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click_on "Create Post"
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assert_text "Post was successfully created"
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click_on "Back"
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end
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test "should update Post" do
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visit post_url(@post)
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click_on "Edit this post", match: :first
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click_on "Update Post"
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assert_text "Post was successfully updated"
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click_on "Back"
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end
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test "should destroy Post" do
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visit post_url(@post)
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click_on "Destroy this post", match: :first
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assert_text "Post was successfully destroyed"
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end
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end

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