app/controllers/users_controller.rb

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

app/helpers/users_helper.rb

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

app/models/user.rb

@@ -0,0 +1,3 @@
+class User < ApplicationRecord
+  has_secure_password
+end

app/views/users/_form.html.erb

@@ -0,0 +1,32 @@
+<%= form_with(model: user, class: "contents") do |form| %>
+  <% if user.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(user.errors.count, "error") %> prohibited this user from being saved:</h2>
+
+      <ul>
+        <% user.errors.each do |error| %>
+          <li><%= error.full_message %></li>
+        <% end %>
+      </ul>
+    </div>
+  <% end %>
+
+  <div class="my-5">
+    <%= form.label :email %>
+    <%= form.text_field :email, 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 :password %>
+    <%= form.password_field :password, 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 :password_confirmation %>
+    <%= form.password_field :password_confirmation, 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/users/_user.html.erb

@@ -0,0 +1,7 @@
+<div id="<%= dom_id user %>">
+  <p class="my-5">
+    <strong class="block font-medium mb-1">Email:</strong>
+    <%= user.email %>
+  </p>
+
+</div>

app/views/users/_user.json.jbuilder

@@ -0,0 +1,2 @@
+json.extract! user, :id, :email, :created_at, :updated_at
+json.url user_url(user, format: :json)

app/views/users/edit.html.erb

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

app/views/users/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, "Users" %>
+
+  <div class="flex justify-between items-center">
+    <h1 class="font-bold text-4xl">Users</h1>
+    <%= link_to "New user", new_user_path, class: "rounded-lg py-3 px-5 bg-blue-600 text-white block font-medium" %>
+  </div>
+
+  <div id="users" class="min-w-full">
+    <% @users.each do |user| %>
+      <%= render user %>
+      <p>
+        <%= link_to "Show this user", user, class: "ml-2 rounded-lg py-3 px-5 bg-gray-100 inline-block font-medium" %>
+      </p>
+    <% end %>
+  </div>
+</div>

app/views/users/index.json.jbuilder

@@ -0,0 +1 @@
+json.array! @users, partial: "users/user", as: :user

app/views/users/new.html.erb

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

app/views/users/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 @user %>
+
+    <%= link_to "Edit this user", edit_user_path(@user), class: "mt-2 rounded-lg py-3 px-5 bg-gray-100 inline-block font-medium" %>
+    <%= link_to "Back to users", users_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 user", @user, method: :delete, class: "mt-2 rounded-lg py-3 px-5 bg-gray-100 font-medium" %>
+    </div>
+  </div>
+</div>

app/views/users/show.json.jbuilder

@@ -0,0 +1 @@
+json.partial! "users/user", user: @user

config/routes.rb

@@ -1,4 +1,5 @@
 Rails.application.routes.draw do
+  resources :users
   resources :credit_card_bills
   resource :dashboard, only: :show
   resources :incomes

db/migrate/20240727022931_create_users.rb

@@ -0,0 +1,11 @@
+class CreateUsers < ActiveRecord::Migration[8.0]
+  def change
+    create_table :users do |t|
+      t.string :email
+      t.string :password_digest
+
+      t.timestamps
+    end
+    add_index :users, :email, unique: true
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[8.0].define(version: 2024_07_27_002531) do
+ActiveRecord::Schema[8.0].define(version: 2024_07_27_022931) do
   create_table "credit_card_bills", force: :cascade do |t|
     t.string "description"
     t.decimal "amount"
@@ -148,6 +148,14 @@ ActiveRecord::Schema[8.0].define(version: 2024_07_27_002531) do
     t.index ["key"], name: "index_solid_queue_semaphores_on_key", unique: true
   end
 
+  create_table "users", force: :cascade do |t|
+    t.string "email"
+    t.string "password_digest"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["email"], name: "index_users_on_email", unique: true
+  end
+
   add_foreign_key "incomes", "members"
   add_foreign_key "solid_queue_blocked_executions", "solid_queue_jobs", column: "job_id", on_delete: :cascade
   add_foreign_key "solid_queue_claimed_executions", "solid_queue_jobs", column: "job_id", on_delete: :cascade

test/controllers/users_controller_test.rb

@@ -0,0 +1,55 @@
+require "test_helper"
+
+class UsersControllerTest < ActionDispatch::IntegrationTest
+  setup do
+    @user = users(:one)
+  end
+
+  test "should get index" do
+    get users_url
+    assert_response :success
+  end
+
+  test "should get new" do
+    get new_user_url
+    assert_response :success
+  end
+
+  test "should create user" do
+    assert_difference("User.count") do
+      params = {
+        user: {
+          email: "userthree@example.local",
+          password: "secret",
+          password_confirmation: "secret"
+        }
+      }
+      post users_url, params: params
+    end
+
+    assert_redirected_to user_url(User.last)
+  end
+
+  test "should show user" do
+    get user_url(@user)
+    assert_response :success
+  end
+
+  test "should get edit" do
+    get edit_user_url(@user)
+    assert_response :success
+  end
+
+  test "should update user" do
+    patch user_url(@user), params: { user: { email: @user.email, password: "secret", password_confirmation: "secret" } }
+    assert_redirected_to user_url(@user)
+  end
+
+  test "should destroy user" do
+    assert_difference("User.count", -1) do
+      delete user_url(@user)
+    end
+
+    assert_redirected_to users_url
+  end
+end

test/fixtures/users.yml

@@ -0,0 +1,9 @@
+# Read about fixtures at https://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  email: userone@example.local
+  password_digest: <%= BCrypt::Password.create("secret") %>
+
+two:
+  email: usertwo@example.local
+  password_digest: <%= BCrypt::Password.create("secret") %>

test/models/user_test.rb

@@ -0,0 +1,7 @@
+require "test_helper"
+
+class UserTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end

test/system/users_test.rb

@@ -0,0 +1,45 @@
+require "application_system_test_case"
+
+class UsersTest < ApplicationSystemTestCase
+  setup do
+    @user = users(:one)
+  end
+
+  test "visiting the index" do
+    visit users_url
+    assert_selector "h1", text: "Users"
+  end
+
+  test "should create user" do
+    visit users_url
+    click_on "New user"
+
+    fill_in "Email", with: "userthree@example.local"
+    fill_in "Password", with: "secret"
+    fill_in "Password confirmation", with: "secret"
+    click_on "Create User"
+
+    assert_text "User was successfully created"
+    click_on "Back"
+  end
+
+  test "should update User" do
+    visit user_url(@user)
+    click_on "Edit this user", match: :first
+
+    fill_in "Email", with: "newemail@example.local"
+    fill_in "Password", with: "newpassword"
+    fill_in "Password confirmation", with: "newpassword"
+    click_on "Update User"
+
+    assert_text "User was successfully updated"
+    click_on "Back"
+  end
+
+  test "should destroy User" do
+    visit user_url(@user)
+    click_on "Destroy this user", match: :first
+
+    assert_text "User was successfully destroyed"
+  end
+end