feat: add user registration functionality

- Add User model with validations for name and email
- Implement UsersController with new action for signup
- Create views for user signup and home page
- Update routes to include signup path
- Add bcrypt gem for password security
- Include tests for user model and controller actions

This commit establishes the foundation for user registration in the application, ensuring proper validation and security measures are in place. It also enhances the user experience by providing a dedicated signup page.

Gemfile

@@ -20,6 +20,8 @@ gem "bootstrap-sass", "~> 3.4.1"
 gem "sassc-rails", ">= 2.1.0"
 gem "jquery-rails", "~> 4.6.0"
 
+gem 'bcrypt', '~> 3.1'
+
 # Use Active Model has_secure_password [https://guides.rubyonrails.org/active_model_basics.html#securepassword]
 # gem "bcrypt", "~> 3.1.7"
 

Gemfile.lock

@@ -79,6 +79,7 @@ GEM
     autoprefixer-rails (10.4.19.0)
       execjs (~> 2)
     base64 (0.2.0)
+    bcrypt (3.1.20)
     bcrypt_pbkdf (1.1.1)
     bcrypt_pbkdf (1.1.1-arm64-darwin)
     bcrypt_pbkdf (1.1.1-x86_64-darwin)
@@ -433,6 +434,7 @@ PLATFORMS
   x86_64-linux-musl
 
 DEPENDENCIES
+  bcrypt (~> 3.1)
   bootsnap
   bootstrap-sass (~> 3.4.1)
   brakeman

app/controllers/users_controller.rb

@@ -0,0 +1,4 @@
+class UsersController < ApplicationController
+  def new
+  end
+end

app/helpers/users_helper.rb

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

app/models/user.rb

@@ -0,0 +1,11 @@
+class User < ApplicationRecord
+  # before_save { self.email = email.downcase }
+  before_save { email.downcase! }
+  validates :name, presence: true, length: { maximum: 50 }
+  VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-]+(\.[a-z\d\-]+)*\.[a-z]+\z/i
+  validates :email, presence: true, length: { maximum: 255 },
+            format: { with: VALID_EMAIL_REGEX },
+            uniqueness:  true
+  has_secure_password
+  validates :password, presence: true, length: { minimum: 6 }
+end

app/views/static_pages/home.html.erb

@@ -7,7 +7,7 @@
     Sample application.
   </h2>
 
-  <%= link_to "Sing up now!", '#', class:"btn btn-lg btn-primary" %>
+  <%= link_to "Sing up now!", signup_path, class:"btn btn-lg btn-primary" %>
 </div>
 <%= link_to image_tag("rails.svg", alt:"Rails logo", width: "200"),
   "https://rubyonrails.org/" %>

app/views/users/new.html.erb

@@ -0,0 +1,3 @@
+<% provide(:title, 'Sign up') %>
+<h1>Sign up</h1>
+<p>This will be a signup page for new users.</p>

config/routes.rb

@@ -1,4 +1,5 @@
 Rails.application.routes.draw do
+  get "users/new"
   get "static_pages/home"
   get "static_pages/help"
   get "static_pages/about"
@@ -7,6 +8,7 @@ Rails.application.routes.draw do
   get '/help', to: 'static_pages#help'
   get '/about', to: 'static_pages#about'
   get '/contact', to: 'static_pages#contact'
+  get '/signup', to: 'users#new'
 
   root "static_pages#home"
   # Define your application routes per the DSL in https://guides.rubyonrails.org/routing.html

db/migrate/20241231022507_create_users.rb

@@ -0,0 +1,10 @@
+class CreateUsers < ActiveRecord::Migration[8.0]
+  def change
+    create_table :users do |t|
+      t.string :name
+      t.string :email
+
+      t.timestamps
+    end
+  end
+end

db/migrate/20241231055957_add_index_to_users_email.rb

@@ -0,0 +1,5 @@
+class AddIndexToUsersEmail < ActiveRecord::Migration[8.0]
+  def change
+    add_index :users, :email, unique: true
+  end
+end

db/migrate/20241231060757_add_password_digest_to_users.rb

@@ -0,0 +1,5 @@
+class AddPasswordDigestToUsers < ActiveRecord::Migration[8.0]
+  def change
+    add_column :users, :password_digest, :string
+  end
+end

db/schema.rb

@@ -0,0 +1,22 @@
+# This file is auto-generated from the current state of the database. Instead
+# of editing this file, please use the migrations feature of Active Record to
+# incrementally modify your database, and then regenerate this schema definition.
+#
+# This file is the source Rails uses to define your schema when running `bin/rails
+# db:schema:load`. When creating a new database, `bin/rails db:schema:load` tends to
+# be faster and is potentially less error prone than running all of your
+# migrations from scratch. Old migrations may fail to apply correctly if those
+# migrations use external dependencies or application code.
+#
+# It's strongly recommended that you check this file into your version control system.
+
+ActiveRecord::Schema[8.0].define(version: 2024_12_31_060757) do
+  create_table "users", force: :cascade do |t|
+    t.string "name"
+    t.string "email"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.string "password_digest"
+    t.index ["email"], name: "index_users_on_email", unique: true
+  end
+end

test/controllers/static_pages_controller_test.rb

@@ -9,25 +9,25 @@ class StaticPagesControllerTest < ActionDispatch::IntegrationTest
   test "should get root" do
     get root_path
     assert_response :success
-    assert_select "title", "Home | #{@base_title}"
+    assert_select "title", full_title("Home")
   end
 
   test "should get help" do
     get help_path
     assert_response :success
-    assert_select "title", "Help | #{@base_title}"
+    assert_select "title", full_title("Help")
   end
 
   test "Should get about" do
     get about_path
     assert_response :success
-    assert_select "title", "About | #{@base_title}"
+    assert_select "title", full_title("About")
   end
 
   test "Should get contact" do
     get contact_path
     assert_response :success
-    assert_select "title", "Contact | #{@base_title}"
+    assert_select "title", full_title("Contact")
   end
 end
 

test/controllers/users_controller_test.rb

@@ -0,0 +1,14 @@
+require "test_helper"
+
+class UsersControllerTest < ActionDispatch::IntegrationTest
+  test "should get new" do
+    get signup_path
+    assert_response :success
+  end
+
+  test "Should get sign up title" do
+    get signup_path
+    assert_response :success
+    assert_select "title", full_title("Sign up")
+  end
+end

test/fixtures/users.yml

@@ -0,0 +1,5 @@
+# Read about fixtures at https://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  name: MyString
+  email: MyString

test/models/user_test.rb

@@ -0,0 +1,76 @@
+require "test_helper"
+
+class UserTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+  def setup
+    @user = User.new(name: "Example User", email: "user@example.com",
+    password: "foobar", password_confirmation: "foobar")
+  end
+
+  test "should be valid" do
+    assert @user.valid?
+  end
+
+  test "name should be present" do
+    @user.name = " " * 6
+    assert_not @user.valid?
+  end
+
+  test "email should be present" do
+    @user.email = " " * 6
+    assert_not @user.valid?
+  end
+
+  test "name should not be too long" do
+    @user.name = "a" * 51
+    assert_not @user.valid?
+  end
+
+  test "email should not be too long" do
+    @user.email = "a" * 244 + "@example.com"
+    assert_not @user.valid?
+  end
+
+  test "email validation should accept valid addresses" do
+    valid_addresses = %w[user@example.com USER@foo.COM A_US-ER@foo.bar.org
+                      first.last@foo.cn alice+bob@baz.cn]
+    valid_addresses.each do |valid_address|
+      @user.email = valid_address
+      assert @user.valid?, "#{valid_address.inspect} should be valid"
+    end
+  end
+
+  test "email validation should reject invalid addresses" do
+    invalid_addresses = %w[user@example,com user_at_foo.org user.name@example.
+                        foo@bar_baz.com foo@bar+baz.com foo@bar...cc]
+    invalid_addresses.each do |invalid_address|
+      @user.email = invalid_address
+      assert_not @user.valid?, "#{invalid_address.inspect} should be invalid"
+    end
+  end
+
+  test "email addresses should be unique" do
+    duplicate_user = @user.dup
+    @user.save
+    assert_not duplicate_user.valid?
+  end
+
+  test "email addresses should be saved as lower-case" do
+    mixed_case_email = "Foo@ExAMPle.CoM"
+    @user.email = mixed_case_email
+    @user.save
+    assert_equal mixed_case_email.downcase, @user.reload.email
+  end
+
+  test "password should be present (non blank)" do
+    @user.password = @user.password_confirmation = " " * 6
+    assert_not @user.valid?
+  end
+
+  test "password should have a minimum length" do
+    @user.password = @user.password_confirmation = " " * 5
+    assert_not @user.valid?
+  end
+end

test/test_helper.rb

@@ -11,6 +11,7 @@ module ActiveSupport
 
     # Setup all fixtures in test/fixtures/*.yml for all tests in alphabetical order.
     fixtures :all
+    include ApplicationHelper
 
     # Add more helper methods to be used by all tests here...
   end