An introduction to Laravel 4

A basic introduction talk to Laravel 4 which I gave on May 8, 2013.

1. An introduction to Laravel 4 by Dries Vints / @DriesVints An introduction to Laravel 4 By Dries Vints
2. An introduction to Laravel 4 by Dries Vints / @DriesVints About me • Web developer at Volta Web (3 years) • Volta Web is a small web agency in Antwerp • Weekly Laravel blog post series at driesvints.com
3. An introduction to Laravel 4 by Dries Vints / @DriesVints About Laravel • Created in 2011 by Taylor Otwell • For developer productivity and happiness • Clean and readable code • Rapidly growing and helpful community • Thoroughly documented and readable core
4. An introduction to Laravel 4 by Dries Vints / @DriesVints Core concepts • PHP 5 >= 5.3.0 • Composer • RESTful • Testable
5. An introduction to Laravel 4 by Dries Vints / @DriesVints getcomposer.org
6. An introduction to Laravel 4 by Dries Vints / @DriesVints Composer • packagist.org • Re-usable packages • Easily manage dependencies for each application • Very simple to use
7. An introduction to Laravel 4 by Dries Vints / @DriesVints { "require": { "laravel/framework": "4.0.*" }, ... } Laravel’s composer.json
8. An introduction to Laravel 4 by Dries Vints / @DriesVints Some Laravel features • Easy routing • Authentication • Blade syntax • Migrations • Eloquent ORM
9. An introduction to Laravel 4 by Dries Vints / @DriesVints Routing • Closures • Controller actions • RESTful controllers • Resourceful controllers
10. An introduction to Laravel 4 by Dries Vints / @DriesVints // http://example.com/users Route::get('users', function() { // Get all users from DB. $users = User::all(); // Create the user list view. return View::make('users') ->with('users', $users); }); Route to closure
11. An introduction to Laravel 4 by Dries Vints / @DriesVints // http://example.com/users Route::get('users', 'UsersController@index'); // http://example.com/users/1 Route::get('users/{id}', 'UsersController@show'); // http://example.com/users Route::post('users', 'UsersController@create'); Route to controller action
12. An introduction to Laravel 4 by Dries Vints / @DriesVints Route::controller('users', 'UsersController'); class UsersController extends BaseController { // http://example.com/users/profile/1 function getProfile($id) { return 'A user with ID: ' . $id; } } Route to RESTful controller
13. An introduction to Laravel 4 by Dries Vints / @DriesVints Route::resource('users', 'UsersController'); class UsersController extends BaseController { // http://example.com/users function index() { return 'All blog posts!'; } } Route to resource controller
14. An introduction to Laravel 4 by Dries Vints / @DriesVints Route::group(array('prefix' => 'admin'), function() { // http://example.com/admin/users Route::get('users', function() { // }); }); Route groups
15. An introduction to Laravel 4 by Dries Vints / @DriesVints Route::filter('old', function() { if (Input::get('age') < 200) { return Redirect::to('home'); } }); Route::get('user', array('before' => 'old', function() { return 'You are over 200 years old!'; })); Route filters
16. An introduction to Laravel 4 by Dries Vints / @DriesVints // Bind parameter to model. Route::model('user', 'User'); // http://example.com/profile/1 Route::get('profile/{user}', function(User $user) { // Do something with this user. }); Route Model Binding
17. An introduction to Laravel 4 by Dries Vints / @DriesVints Route::bind('user', function($value, $route) { return User::where('name', $value)->first(); }); Custom Route binding
18. An introduction to Laravel 4 by Dries Vints / @DriesVints Route::get('user', function() { return 'Everyone can access this route.'; }); Route::get('user', array('before' => 'auth', function() { return 'Only logged in users can access this route'; })); Securing routes
19. An introduction to Laravel 4 by Dries Vints / @DriesVints Route::group(array('before' => 'auth'), function() { Route::get('users', 'UsersController@index'); Route::get('roles', 'RolesController@index'); }); Secure route groups
20. An introduction to Laravel 4 by Dries Vints / @DriesVints $credentials = array( 'email' => $email, 'password' => $password ); if (Auth::attempt($credentials)) { // The user's credentials are valid... } Authentication
21. An introduction to Laravel 4 by Dries Vints / @DriesVints @if (count($users)) @foreach ($users as $user) <h2>{{ $user->name }}</h2> <p>{{ $user->bio }}</p> @endforeach @endif Views Blade syntax!
22. An introduction to Laravel 4 by Dries Vints / @DriesVints <html> <body> @section('sidebar') This is the master sidebar. @show <div class="container"> @yield('content') </div> </body> </html> Defining Blade layouts
23. An introduction to Laravel 4 by Dries Vints / @DriesVints @extends('layouts.master') @section('sidebar') @parent <p>This is appended to the master sidebar.</p> @stop @section('content') <p>This is my body content.</p> @stop Using Blade layouts
24. An introduction to Laravel 4 by Dries Vints / @DriesVints $environments = array( 'local' => array('MacBook-of-Dries', '*.dev'), 'staging' => array('dev.mywebsite.com'), 'production' => array('*.mywebsite.com'), ); Environments
25. An introduction to Laravel 4 by Dries Vints / @DriesVints app - config - database.php - cache.php - staging - database.php - production - database.php - cache.php Environments
26. An introduction to Laravel 4 by Dries Vints / @DriesVints Artisan • CLI for Laravel • Driven by the Symfony/Console component • Used for common tasks like migrations • Provides helpers for code generating • Can be extended
27. An introduction to Laravel 4 by Dries Vints / @DriesVints # Starts up a PHP dev server (PHP 5.4). php artisan serve # Interact with your application. php artisan tinker # Generate a controller class. php artisan controller:make UsersController Some Artisan commands
28. An introduction to Laravel 4 by Dries Vints / @DriesVints # Put application in maintenance mode. php artisan down # Put application back live. php artisan up Maintenance mode
29. An introduction to Laravel 4 by Dries Vints / @DriesVints Migrations • Version control for your database scheme • Unique by timestamp • Build and edit your database scheme • Reverse to previous iterations
30. An introduction to Laravel 4 by Dries Vints / @DriesVints class CreateUsersTable extends Migration { // Execute changes. public function up() {} // Reverse changes. public function down() {} } Migrations
31. An introduction to Laravel 4 by Dries Vints / @DriesVints // Migrate up. Schema::create('users', function($table) { $table->increments('id'); $table->string('name'); $table->timestamps(); }); // Migrate down. Schema::drop('users'); Schema builder
32. An introduction to Laravel 4 by Dries Vints / @DriesVints # Run migrations. php artisan migrate # Reverse previous migration. php artisan migrate:rollback # Fresh install. php artisan migrate:refresh Executing migrations
33. An introduction to Laravel 4 by Dries Vints / @DriesVints // Get multiple records. $users = DB::table('users')->get(); // Get a single record. $user = DB::table('users')->where('name', 'Dries') ->first(); // Get records as a key/value array. $users = DB::table('users')->lists('name', 'id'); Query builder
34. An introduction to Laravel 4 by Dries Vints / @DriesVints // Insert records. DB::table('users')->insert(array('name' => 'Paul')); // Update a record. DB::table('users')->where('id', 1) ->update(array('name' => 'Kerim')); // Delete records. DB::table('users')->where('id', '<=', 5)->delete(); Query builder
35. An introduction to Laravel 4 by Dries Vints / @DriesVints Eloquent ORM • Based on Rail’s ActiveRecord • Query scoping • Makes defining relationships super easy • Model events • Much more...
36. An introduction to Laravel 4 by Dries Vints / @DriesVints // Just one simple rule. class User extends Eloquent {} // Get all users. $users = User::all(); // Find a specific user. $user = User::find(1); Basic Eloquent model
37. An introduction to Laravel 4 by Dries Vints / @DriesVints // Create a new user. $user = new User; $user->name = 'Jan'; $user->save(); // Or... $user = User::create(array('name' => 'Paul')); // Delete a record. User::destroy(1); CRUD with Eloquent
38. An introduction to Laravel 4 by Dries Vints / @DriesVints // Query builder. $user = DB::table('users')->where('name', 'Dries') ->first(); // Eloquent. $user = User::where('name', 'Dries')->first(); Query builder extended
39. An introduction to Laravel 4 by Dries Vints / @DriesVints class User extends Eloquent { public function scopePopular($query, $votes = 100) { return $query->where('votes', '>', $votes); } } $users = User::popular(50)->get(); Query scopes
40. An introduction to Laravel 4 by Dries Vints / @DriesVints Eloquent relationships • One to one • One to many • Many to many • Polymorphic
41. An introduction to Laravel 4 by Dries Vints / @DriesVints // The 'phones' table has a 'user_id' foreign key. class User extends Eloquent { public function phone() { return $this->hasOne('Phone'); } } // Get the user’s phone number. $phoneNumber = User::find(1)->phone->number; One to One
42. An introduction to Laravel 4 by Dries Vints / @DriesVints // The 'phones' table has a 'user_id' column. class User extends Eloquent { public function phones() { return $this->hasMany('Phone'); } } // Itterate over the user’s phones. foreach ($user->phones as $phone) {} One to Many
43. An introduction to Laravel 4 by Dries Vints / @DriesVints class Phone extends Eloquent { public function user() { return $this->belongsTo('User'); } } // Get the user to which this phone belongs to. $user = Phone::find(1)->user; Inverse relation
44. An introduction to Laravel 4 by Dries Vints / @DriesVints class User extends Eloquent { public function roles() { return $this->belongsToMany('Role'); } } foreach ($user->roles as $role) {} foreach ($role->users as $user) {} Many to Many
45. An introduction to Laravel 4 by Dries Vints / @DriesVints class Photo extends Eloquent { public function imageable() { return $this->morphTo(); } } class User extends Eloquent { public function photos() { return $this->morphMany('Photo', 'imageable'); } } Polymorphic
46. An introduction to Laravel 4 by Dries Vints / @DriesVints users id - integer galleries id - integer photos id - integer imageable_id - integer imageable_type - string Polymorphic
47. An introduction to Laravel 4 by Dries Vints / @DriesVints // Retrieve a user’s or a gallery’s photos. foreach ($user->photos as $photo) {} foreach ($gallery->photos as $photo) {} // Retrieving the owner. $imageable = Photo::find(1)->imageable; // $imageable can be User or Gallery. Polymorphic
48. An introduction to Laravel 4 by Dries Vints / @DriesVints Route::get('users', function() { return User::all(); }); JSON Great for building APIs!
49. An introduction to Laravel 4 by Dries Vints / @DriesVints [ { "id":1, "name":"Dries Vints", "bio":"Lorum ipsum.", "created_at":"2013-04-06 20:10:15", "updated_at":"2013-04-06 20:15:17" }, ... ] JSON
50. An introduction to Laravel 4 by Dries Vints / @DriesVints There’s more! • Events • Caching • Queues • Localization • Unit testing • Validation • Mailer • Pagination • Forms & HTML generator • Session handler • Logging • And tons of other stuff...
51. An introduction to Laravel 4 by Dries Vints / @DriesVints Symfony & Laravel • Match made in heaven • Symfony provides solid components • Pre-set release cycle
52. An introduction to Laravel 4 by Dries Vints / @DriesVints Symfony in Laravel 3 symfony/console & symfony/http-foundation
53. An introduction to Laravel 4 by Dries Vints / @DriesVints Symfony in Laravel 4 • symfony/browser-kit • symfony/console • symfony/css-selector • symfony/debug • symfony/dom-crawler • symfony/event-dispatcher • symfony/finder • symfony/http-foundation • symfony/http-kernel • symfony/process • symfony/routing • symfony/translation
54. An introduction to Laravel 4 by Dries Vints / @DriesVints Other packages • classpreloader/classpreloader • doctrine/dbal • ircmaxell/password-compat • filp/whoops • monolog/monolog • nesbot/carbon • patchwork/utf8 • predis/predis • swiftmailer/swiftmailer
55. An introduction to Laravel 4 by Dries Vints / @DriesVints Illuminate components Auth, Cache, Config, Console, Container, Cookie, Database, Encryption, Events, Exception, Filesystem, Foundation, Hashing, HTML, Http, Log, Mail, Pagination, Queue, Redis, Routing, Session, Support, Translation, Validation, View, Workbench
56. An introduction to Laravel 4 by Dries Vints / @DriesVints Laravel’s release schedule Mapped to Symfony's schedule 4.0: May 2013 4.1: November 2013 4.2: May 2014 4.3: November 2014
57. An introduction to Laravel 4 by Dries Vints / @DriesVints How to learn Laravel 4? • http://four.laravel.com • http://net.tutsplus.com/ • http://laravel.io/ • http://daylerees.com • http://jasonlewis.me/laravel-tutorials • http://forums.laravel.io/viewtopic.php?id=859
58. An introduction to Laravel 4 by Dries Vints / @DriesVints The community • IRC #laravel on irc.freenode.net (+/- 350 people) • http://forums.laravel.io • #laravel on twitter
59. An introduction to Laravel 4 by Dries Vints / @DriesVints Laracon EU • 30 - 31st August 2013 • At Bimhuis in Amsterdam • International speakers • They need sponsors! -> contact@laracon.eu
60. An introduction to Laravel 4 by Dries Vints / @DriesVints Thanks • @driesvints • github.com/driesvints • driesvints.com • https://joind.in/8571