Scaffold todo model

app/controllers/todos_controller.rb

@@ -0,0 +1,70 @@
+class TodosController < ApplicationController
+  before_action :set_todo, only: %i[ show edit update destroy ]
+
+  # GET /todos or /todos.json
+  def index
+    @todos = Todo.all
+  end
+
+  # GET /todos/1 or /todos/1.json
+  def show
+  end
+
+  # GET /todos/new
+  def new
+    @todo = Todo.new
+  end
+
+  # GET /todos/1/edit
+  def edit
+  end
+
+  # POST /todos or /todos.json
+  def create
+    @todo = Todo.new(todo_params)
+
+    respond_to do |format|
+      if @todo.save
+        format.html { redirect_to todo_url(@todo), notice: "Todo was successfully created." }
+        format.json { render :show, status: :created, location: @todo }
+      else
+        format.html { render :new, status: :unprocessable_entity }
+        format.json { render json: @todo.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # PATCH/PUT /todos/1 or /todos/1.json
+  def update
+    respond_to do |format|
+      if @todo.update(todo_params)
+        format.html { redirect_to todo_url(@todo), notice: "Todo was successfully updated." }
+        format.json { render :show, status: :ok, location: @todo }
+      else
+        format.html { render :edit, status: :unprocessable_entity }
+        format.json { render json: @todo.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # DELETE /todos/1 or /todos/1.json
+  def destroy
+    @todo.destroy!
+
+    respond_to do |format|
+      format.html { redirect_to todos_url, notice: "Todo was successfully destroyed." }
+      format.json { head :no_content }
+    end
+  end
+
+  private
+    # Use callbacks to share common setup or constraints between actions.
+    def set_todo
+      @todo = Todo.find(params[:id])
+    end
+
+    # Only allow a list of trusted parameters through.
+    def todo_params
+      params.require(:todo).permit(:title, :status)
+    end
+end

app/helpers/todos_helper.rb

@@ -0,0 +1,2 @@
+module TodosHelper
+end

app/models/todo.rb

@@ -0,0 +1,2 @@
+class Todo < ApplicationRecord
+end

app/views/todos/_form.html.erb

@@ -0,0 +1,27 @@
+<%= form_with(model: todo, class: "contents") do |form| %>
+  <% if todo.errors.any? %>
+    <div id="error_explanation" class="bg-red-50 text-red-500 px-3 py-2 font-medium rounded-lg mt-3">
+      <h2><%= pluralize(todo.errors.count, "error") %> prohibited this todo from being saved:</h2>
+
+      <ul>
+        <% todo.errors.each do |error| %>
+          <li><%= error.full_message %></li>
+        <% end %>
+      </ul>
+    </div>
+  <% end %>
+
+  <div class="my-5">
+    <%= form.label :title %>
+    <%= form.text_field :title, class: "block shadow rounded-md border border-gray-400 outline-none px-3 py-2 mt-2 w-full" %>
+  </div>
+
+  <div class="my-5">
+    <%= form.label :status %>
+    <%= form.number_field :status, class: "block shadow rounded-md border border-gray-400 outline-none px-3 py-2 mt-2 w-full" %>
+  </div>
+
+  <div class="inline">
+    <%= form.submit class: "rounded-lg py-3 px-5 bg-blue-600 text-white inline-block font-medium cursor-pointer" %>
+  </div>
+<% end %>

app/views/todos/_todo.html.erb

@@ -0,0 +1,12 @@
+<div id="<%= dom_id todo %>">
+  <p class="my-5">
+    <strong class="block font-medium mb-1">Title:</strong>
+    <%= todo.title %>
+  </p>
+
+  <p class="my-5">
+    <strong class="block font-medium mb-1">Status:</strong>
+    <%= todo.status %>
+  </p>
+
+</div>

app/views/todos/_todo.json.jbuilder

@@ -0,0 +1,2 @@
+json.extract! todo, :id, :title, :status, :created_at, :updated_at
+json.url todo_url(todo, format: :json)

app/views/todos/edit.html.erb

@@ -0,0 +1,8 @@
+<div class="mx-auto md:w-2/3 w-full">
+  <h1 class="font-bold text-4xl">Editing todo</h1>
+
+  <%= render "form", todo: @todo %>
+
+  <%= link_to "Show this todo", @todo, class: "ml-2 rounded-lg py-3 px-5 bg-gray-100 inline-block font-medium" %>
+  <%= link_to "Back to todos", todos_path, class: "ml-2 rounded-lg py-3 px-5 bg-gray-100 inline-block font-medium" %>
+</div>

app/views/todos/index.html.erb

@@ -0,0 +1,21 @@
+<div class="w-full">
+  <% if notice.present? %>
+    <p class="py-2 px-3 bg-green-50 mb-5 text-green-500 font-medium rounded-lg inline-block" id="notice"><%= notice %></p>
+  <% end %>
+
+  <% content_for :title, "Todos" %>
+
+  <div class="flex justify-between items-center">
+    <h1 class="font-bold text-4xl">Todos</h1>
+    <%= link_to "New todo", new_todo_path, class: "rounded-lg py-3 px-5 bg-blue-600 text-white block font-medium" %>
+  </div>
+
+  <div id="todos" class="min-w-full">
+    <% @todos.each do |todo| %>
+      <%= render todo %>
+      <p>
+        <%= link_to "Show this todo", todo, class: "ml-2 rounded-lg py-3 px-5 bg-gray-100 inline-block font-medium" %>
+      </p>
+    <% end %>
+  </div>
+</div>

app/views/todos/index.json.jbuilder

@@ -0,0 +1 @@
+json.array! @todos, partial: "todos/todo", as: :todo

app/views/todos/new.html.erb

@@ -0,0 +1,7 @@
+<div class="mx-auto md:w-2/3 w-full">
+  <h1 class="font-bold text-4xl">New todo</h1>
+
+  <%= render "form", todo: @todo %>
+
+  <%= link_to "Back to todos", todos_path, class: "ml-2 rounded-lg py-3 px-5 bg-gray-100 inline-block font-medium" %>
+</div>

app/views/todos/show.html.erb

@@ -0,0 +1,15 @@
+<div class="mx-auto md:w-2/3 w-full flex">
+  <div class="mx-auto">
+    <% if notice.present? %>
+      <p class="py-2 px-3 bg-green-50 mb-5 text-green-500 font-medium rounded-lg inline-block" id="notice"><%= notice %></p>
+    <% end %>
+
+    <%= render @todo %>
+
+    <%= link_to "Edit this todo", edit_todo_path(@todo), class: "mt-2 rounded-lg py-3 px-5 bg-gray-100 inline-block font-medium" %>
+    <%= link_to "Back to todos", todos_path, class: "ml-2 rounded-lg py-3 px-5 bg-gray-100 inline-block font-medium" %>
+    <div class="inline-block ml-2">
+      <%= button_to "Destroy this todo", @todo, method: :delete, class: "mt-2 rounded-lg py-3 px-5 bg-gray-100 font-medium" %>
+    </div>
+  </div>
+</div>

app/views/todos/show.json.jbuilder

@@ -0,0 +1 @@
+json.partial! "todos/todo", todo: @todo