Lecture on Implementing Authentication in Laravel (Login, Logout, Register)

Introduction

• Discussion on creating login, logout, and register functions in Laravel.

Setting up Controller

• Open terminal and generate a new controller: php artisan make:controller SessionController
• Confirmation: a new file SessionController.php created in app/Http/Controllers.

Creating Functions in Controller

1. index Function
   • Displays form for email and password input.
   • Generates a blade file for the form (index.blade.php) in resources/views/sesi
2. login Function
   • Authenticates email and password input from the index form.
   • Validate the email and password.
   • If valid, redirect to a success page; if not, return error messages.

Blade File Creation for index

• Create a Blade file index.blade.php in resources/views/sesi.
• Extend layout and create a form with the following fields:
  • Email
  • Password
  • Submit Button

Routing Setup

• Define routes in routes/web.php:

  Route::get('/sesi', 'SessionController@index');
  Route::post('/sesi/login', 'SessionController@login');
  

Handling CSRF

• Implement CSRF in the form using @csrf directive for security.

Authentication Logic in login Function

• Capture the request using Request object.
• Validate inputs:
  • required for email and password.
• Authentication using Auth::attempt.
• Redirection on success or failure:

  if (Auth::attempt(['email' => $request->email, 'password' => $request->password])) {
      return redirect()->intended('dashboard');
  } else {
      return back()->withErrors(['email' => 'Invalid credentials']);
  }
  

Creating User Model Seeder

• Generate and configure a seeder: php artisan make:seeder UsersTableSeeder
• Insert mock data (with hashed passwords) in the run method.
  • Use Hash::make for password hashing.

Refreshing Database

• Run the seeder to populate users table: php artisan db:seed --class=UsersTableSeeder

Validating Register Form

1. Creating register Function
   • Displays the registration form.
   • Generate register.blade.php in resources/views/sesi.
2. Creating create Function
   • Handles registration submission.
   • Validates inputs (name, email, password).
   • Check for unique email.
   • Insert validated data into users table.

Abstracting Logic into Blade Components

• Create a new Blade component for the header.
• Display header based on user login status.

Additional Functions

1. logout Function
   • Logs out the user and redirects to login page with a message.
   • Route definition: Route::get('/sesi/logout', 'SessionController@logout');

Summary

• Implemented login, logout, and register functionalities in Laravel.
• Used Blade for form rendering and validation.
• Handled authentication and session management using Laravel's built-in features.