Laravel Introduction

whoami
• Ahmad Shah Hafizan Hamidin
• 27 years old
• Been developing for > 7 years
• Laravel & Orchestra fanboy
• https://www.github.com/ahmadshah
• @penjajah
• kuasamalaya

Why so many Laravel?
laravel/laravel!
The framework structure and boilerplate codes
!
laravel/framework!
The core of laravel framework or the kernel
!
Illuminate
The namespace for every laravel framework
components!

What do we need?
• A webserver (Apache2/NGINX)
• PHP 5.4 or above
• Database engines (MySQL/PostgreSQL/MSSQL)
• PHP mcrypt extension
• Composer

Composer!
• Remember PEAR?
• Awesome PHP package management
• Making developer lives easier
• Manage application dependencies
• http://getcomposer.org/
• http://packagist.com/

How to get Laravel?!
via Laravel installer!
> composer global require “laravel/installer=~1.1”
> laravel new my-application
!
via Composer!
> composer create-project laravel/laravel my-application

Laravel Setup
• Make app/storage directory writable
• Update public/.htaccess if you are using alias
• Update app/config/database.php to connect
to your database

M V C
Eloquent, Blade and Controller

Laravel Routes
• Handles the HTTP requests
• GET, POST, PUT, PATCH, DELETE
• All application routes are defined inside
app/routes.php
• Can accept Closures or controller
namespace

Laravel Routes
Route with Closure!
Route::get(‘foobar’, function () {
return ‘Welcome to FooBar!’;
});
!
Route with Controller!
Route::get(‘foobar’, ‘FoobarController@index’);

Laravel Controllers
• Controllers are kept under app/controllers
• Laravel naming convention: FoobarController
• Extends IlluminateRoutingController class

Laravel Resourceful
Controllers
• Predefine controller methods to handle
the HTTP verbs
• index, show, create, store, edit,
update, and destroy

Laravel Resourceful!
Controllers
Route with Resource Controller!
Route::resource(‘foobar’, ‘FoobarController’);

Laravel Views
• The presentation layer of an application
• Can accept either vanilla PHP or Blade
files
• View files are located under app/views
directory
• Can accept array arguments

Laravel Views
Route with view!
Route::get(‘foobar’, function () {
return View::make(‘foobar’);
});

Laravel Blade
• Laravel default templating engine
• Files need to use .blade.php extension
• Driven by inheritance and sections
• Extensible for adding new custom control
structures

Laravel Blade
Master layout!
<!doctype html>
…
<body>
@yield(‘content’)
</body>
</html>
!
Child layout!
@extends(‘layout.master’)
@section(‘content’)
…
@stop

Laravel Eloquent
• Laravel ORM component
• Simple ActiveRecord implementation
• Each tables can be represented with a
“Model” file
• Model files are located under app/models
directory
• Extends IlluminateDatabaseEloquentModel
class

Laravel Fluent
• Laravel SQL query builder component
• Write SQL query in a more elegant and readable
way

Laravel Filters
• Control the behaviour of a route
• Process request before or after
• Filters are located inside app/filters.php
• Can be attached directly to route or controller
• Can be in either Closure or filter class

Laravel Auth
• Laravel user authentication component
• Provide a basic functionalities to authenticate users
• Does not come with ACL / RBAC
• Utilizes app/models/User.php
• Laravel does not come with a user table by default

Laravel Artisan
• Laravel CLI
• Uses the Symfony Console component
• Manage table migrations, seed tables,
create resourceful controllers and many more
• Developer best friend!

SOLID Principles
Single Responsibility Principle!
a class should have only one responsibility
!
Open/Closed Principle!
open for extension and closed for modification
!
Liskov Substitution Principle
Subtypes must be substitutable for their base types!

SOLID Principles
Interface Segregation Principle!
many client-specific interfaces are better
!
Dependency Inversion Principle!
depends on abstraction
!
!

Laravel IOC
• Inversion Of Control
• Manages class dependencies
• Based on dependency injection method
• Dependencies are injected at run-time
• Allowing dependencies to be easily swapped

Laravel Service Providers
• Act like a component bootstrap
• Group related IoC registrations in one place
• Can also run other functionalities like
artisan commands

Laravel Facades
• Provide static interfaces to classes
• Classes are resolved via IoC containers
• Laravel is full with facades such as View,
Cache, Config and others

Laravel Workbench
• A tool to help develop laravel based components
• Scaffold the necessary boilerplates
• We do not commit/ship workbench directory

Laravel Introduction

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