LARAVELPHP FRAMEWORK FOR WEB ARTISANS

Taylor OtwellCreator of Laravel

www.taylorotwell.com

@taylorotwell

http://taylorotwell.com/on-community/

http://www.github.com/laravel/laravel

V 4.2.X Current Release

Google Trendsfrom 2004 to current

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Easy to Learn

Ready For Tomorrow

Great Community

Composer Powered

www.getcomposer.org

Dependency Manager for PHP

Eloquent ORM

Easy for TDD

FAIL PASS

REFACTOR

INSTALLATION

It’s too easy, I don’t have to tell you.

IoCInverse of Control

Illuminate\Container\Container

Wikipedia

In software engineering, inversion of control describes a design in which

custom-written portions of a computer program receive the flow of control from

a generic, reusable library“what you get when your program make a call”

“Removing dependency from the code”

Simplifying Dependency Injection

$object = new SomeClass($dependency1, $dependency2);

$object = App::make(‘SomeClass’);

Hard-coded source dependency

public function sendEmail(){

$mailer = new Mailer;$mailer->send();

}

public function sendEmail(){

$mailer = App::make(‘Mailer’);$mailer->send();

}

IoC Resolution

Telling IoC what we need

$Bar = App::make(‘Bar’); // new Bar;

App::bind(‘Bar’, ‘MockBar’);

$Bar = App::make(‘Bar’); // new MockBar;

Simple ways to bind to the IoC

App::bind(‘SomeClass’, function() { return new Foo;

});

$fooObject = new Foo;$object = App::bind(‘SomeClass’, $fooObject);

App::bind(‘SomeClass’, ‘Foo’);

Singleton Dependencies

$object = App::singleton(‘CurrentUser’, function() {

$auth = App::make(‘Auth’);return $auth->user(); // returns user object

});

Automatic Dependency Resolution

class EmailService {

public function __construct(Mailer $mailer){

$this->mailer = $mailer;}

public function sendEmail() {$this->mailer->send();

}}

$EmailService = App::make(‘EmailService’);

Service Providers

Service Providers

use Illuminate\Support\ServiceProvider;

class ContentServiceProvider extends ServiceProvider {

public function register(){

$this->app->bind(‘PostInterface’, ‘\My\Name\Space\Post’);}

}

App::register(‘ContentServiceProvider’); // Registering at Runtime

Laravel Facades

Illuminate/Support/Facades/Facade

What is FacadeIn Laravel Context

Facade is a class that provide access to an object registered

in the IoC container.

Facade Class

IoC Container

Object A

Facades enable you to hide complex interface behind a simple one.

What is happening?

Illuminate/Support/Facades/Route

Route::get(‘/’, ‘HomeController@getIndex’);

$app->make(‘router’)->get(‘/’, ‘HomeController@getIndex’);

Illuminate/Routing/Router

Facades in LaravelIlluminate/Support/Facades/

App Artisan Auth Blade Cache Config Cookie Crypt

DB Event File Form Hash HTML Input Lang

Log Mail Paginator Password Queue Redirect Redis

Request Response Route Schema ViewSession SSH URL Validator

Illuminate/Foundation/Application

EloquentTalking to your data

Illuminate\Database\Eloquent\Model

$result = mysql_query(“SELECT * FROM `users`”);

How you query in plain PHP 5.4 or less (deprecated)

$mysqli = new mysqli(“localhost”, “user”,”password”,”database”);$result = $mysqli->query(“SELECT * FROM `users` “);

How you query in plain PHP 5.5 or above

User::all();

In Laravel 4, does the same query

User::all();

DB::table(‘users’)->get();

Illuminate\Database\Query\Builder

What happens when you use Eloquent ORM

Create, Read, Update, Delete

Post::create($data);

Post::find($id);

Post::find($id)->update($data);

Post::delete($id);

Eloquent Model Class

class Post extends Eloquent {

public function comments() { return $this->hasMany(‘Comment’);

}

public function author() { return $this->belongsTo(‘User’);

}

public function scopePublished($q) { return $q->where(‘publish’,’=‘,1);

} }

Eloquent Model Class

class Post extends Eloquent {

public function comments() { return $this->hasMany(‘Comment’);

}

public function author() { return $this->belongsTo(‘User’);

}

public function scopePublished($q) { return $q->where(‘publish’,’=‘,1);

} }

$post = Post::find($id);$author = post->author; // get the author object

Get Post’s Author Object

$posts = Post::with(‘author’)->get();

Get Posts including Authors

Get Post Comments Approved

$post = Post::find($id);$comments = $post->comments()

->where(‘approved’, true)->get();

Model with Query Scope

$published_posts = Post::published()->get(); // gets all posts published

$published_posts = Post::where(‘publish’, ‘=‘, true)->get();// gets all posts published

Query Scope Example

class Post extends Eloquent {

public function comments() { return $this->hasMany(‘Comment’);

}

public function author() { return $this->belongsTo(‘User’);

}

public function scopePublished($q) {

return $q->where(‘publish’,’=‘,1);}

}

Eloquent Relations

Eloquent Relationship One to One(hasOne)

class User

$this->hasOne(‘Profile’, ‘user_id’);

function Profile()

Users

pK: id

username

email

Profile

pk: id

fK: user_id

url

class Post

$this-> hasMany(‘Comment’);

function comments()

Posts

pK: id

title

user_id

Comments

pk: id

fK: post_id

user_id

Eloquent Relationship One to Many(hasMany)

class User

$this-> belongsToMany(‘Group’)

;

function groups()

Users

pK: id

username

email

Groups

pk: id

Name

Group_User

user_id

group_id

Eloquent Relationship Many to Many

(belongsToMany)

class Country

$this-> hasManyThrough(‘User’

);

function posts()

Countries

pK: id

name

code

Posts

pk: id

user_id

title

bodyUsers

pK: id

country_id

username

email

Eloquent Relationship One to Many through(hasManyThrough)

Eloquent Relationship Polymorphic Association

$user->image; $movie->image;

class Movie

$this-> morphMany(‘Photo’,

‘imageable);

function image()

Profile

pK: id

user_id

preferencesPhotos

pk: id

file_path

imageable_id

imageable_type

Movie

pK: id

title

released

class Photo

$this-> morphTo();

function imageable()

class Profile

$this-> morphMany(‘Photo’,

‘imageable);

function image()

Eloquent Relationship Many to Many Polymorphic Association

$movie->tags; $post->tags;

Posts

pK: id

title

body

Taggables

tag_id

taggable_id

taggable_type

Movie

pK: id

title

released

class Movie

$this-> morphToMany(‘Tag’,

‘Taggable’);

function tags()

Tags

pk: id

name

class Post

$this-> morphToMany(‘Tag’,

‘Taggable’);

function tags()

class Tag

$this-> morphedByMany

(‘Post’, ‘Taggable’);

function posts()$this->

morphedByMany (‘Movie’,

‘Taggable’);

function movies()

Underneath Eloquent Model

Query Builder

DB::table(‘users’)->get();

DB::table(‘users’)->where(‘email’, ‘raftalks@gmail.com’)->first();

DB::table(‘users’)->where(‘votes’, ‘>’, 100)->orWhere(‘votebox’, ‘A’)->get();

Illuminate\Database\Query\Builder

Complex Queries via Query Builder

DB::table(‘users’)->join(‘contacts’, function($join) {

$join->on(‘users.id’, ‘=‘, ‘contacts.user_id’)->whereNotNull(‘contacts.mobile_number’);

})->leftJoin(‘submissions’,’users.id’, ‘=‘, ‘submissions.user_id’)->whereExists(function($query) {

$query->select(DB::raw(1))->from(‘reviews’)->whereRaw(‘reviews.user_id = users.id’);

})->whereYear(‘users.joined_date’, ‘>’, 2010)->get();

Get all users joined after year 2010 having over 1000 visits and having submitted reviews. Only select users

with their contacts having mobile numbers and include if they have any content submitted.

Find out remaining 70% of Eloquent Features from the

documentation

Routing

Wolf

Multiple Routing Paradigms

1. route to closures2. route to controller actions3. route to RESTful controllers4. route to resource

Routing to Closure

Route::get(‘techtalks’, function() {return “<h1> Welcome </h1>“;

});

Route::post(‘techtalks’, function() {});

Route::put(‘techtalks/{id}’, function($id) { });

Route::delete(‘techtalks/{id}’, function($id) {});

Route::any(‘techtalks’, function() {});

Route Groups and Filters

Route::group([‘prefix’=>’settings’, ‘before’=>’auth’], function() { Route::get(‘users’, function() {

// get a post by id });

});

Route::filter(‘auth’, function() { if (Auth::guest()) return Redirect::guest('login');});

Subdomain Routing// Registering sub-domain routesRoute::group([‘domain’ =>’{account}.fihaara.com’], function() {

Route::get(‘/’, function($account) {

return “welcome to “ . $account; });});

Routing to a Controller Action

class HomePageController extends BaseController {

public function home(){

return “welcome to home page”;}

}

Route::get(‘/‘, ‘HomePageController@home’);

class TechTalksController extends Controller {

public function getIndex() {} /talkspublic function getTalkerProfile($id) {} /talks/talker-profile/1public function getTalk($id) {} /talks/talk/1public function postTalk(){} /talks/talkpublic function putTalk(){} /talks/talkpublic function deleteTalk($id){} /talks/talk/1

}

Routing to RESTful Controller

Route::controller(‘talks’, ‘TechTalksController’);

Public method must be prefixed with an HTTP verb

class PostsController extends Controller {

public function index() {} // posts GET public function create() {} // posts/create GET public function store() {} // posts POST public function show($id) {} // posts/{id} GET public function edit($id) {} // posts/{id}/edit GET public function update() {} // posts/{id} PUT public function destroy() {} // posts/{id} DELETE…

Routing to Resource Controller

Route::resource(‘posts’, ‘PostsController’);

Other Cool Features

Authentication

$credentials = [‘username’=> ‘raftalks’, ‘password’ => ‘secret’];

if (Auth::attempt($credentals) === false){

return Redirect::to(‘login-error’);}

if (Auth::check() === false){

return Redirect::to(‘login’);}

Check if user is authenticated

Localization

App::setLocale(‘dv’); echo Lang::get(‘news.world_news’); // out puts “ ުރ� ަބ� ަޚ� ެގ� ޭޔ� ިނ ”ުދ�echo Trans(‘news.world_news’);

Basic Usage

return array(“world_news” =>“ ުރ� ަބ� ަޚ� ެގ� ޭޔ� ިނ ,”ުދ�“news” => “ ުރ� ަބ� ,”ަޚ�…

Lang FileFILE PATH:/app

/lang/dv

news.php

Artisan CLI

Laravel ProvidesArtisan Commands for

Rapid Development

You can develop customArtisan commandsfor a package or

an application

Creating DB Migration

php artisan migrate:make create_users_table --create=users

class Create_Users_table extends Migration {

public function up() {

Schema::create(‘users’, function(Blueprint $table) {$table->increments(‘id’);$table->string(‘username’, 50);$table->string(‘password’, 200);

});},

public function down() {Schema::drop(‘users’);

}}

Seeding into your DB

class DefaultAdminUserSeeder extends Seeder {

public function run() {

DB::table(‘users’)->delete(); // truncates the table data

User::create([‘username’=>’admin’,‘password’=> Hash::make(‘password’)

]);}

}

Events

Event::fire(‘news.created’, $post);

Event::listen(‘news.created’,function($post) {

UserPostCounter::increment(‘posts’, $post->user_id);});

Mail

Mail::send(‘emails.welcome’, $data, function($message) use($user){

$message->to($user->email, $user->name)->subject(‘Welcome’);

});

uses SwiftMailer Libraryor use API drivers forMailgun or Mandrill

QueuesBeanstalkd

Amazon SQSIronMQRedis

Synchronous (for lcoal use)

Queue::push('SendEmail', [‘message' => $message]);

php artisan queue:listen

Remote SSH

SSH::run([‘cd /var/www’,‘git pull origin master’

]);

Laravel HomesteadUsing Vagrant, we now have easy way to simply manage virtual machines.

Included Softwares• Ubuntu 14.04• PHP 5.5• Nginx• MySQL• Postgres• Node (with Bower, Grunt, Gulp)• Redis• Memcached• Beanstalkd• Laravel Envoy• Fabric + HipChat Extension

Sign Up -> Add Your Cloud’s API Key -> Serve Happiness

forge.laravel.com

Meet the community @ IRC

Channel: #laravelServer: irc.freenode.netPort: 6667

Next Laracon

laracon.eu/2014

Laravel Maldives Group

Wouldn’t it be awesome for us to have our own Laracons

Feel free to get in touch with me if you are interested.My Emails: 7909000@gmail.com / raftalks@gmail.com

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Sleep Well :)