Presentations on Laravel 5.3 for Beginners

1. Laravel @ Kelltontech
22nd
November '16

2. What's Laravel ?
THE PHP FRAMEWORK FOR WEB ARTISANS.
PHP THAT DOESN'T HURT. CODE HAPPY & ENJOY THE FRESH AIR.

3. Where To Start From?
Laravel is very flexible framwork. There are at
least 3 options how to create new project:
✔ via laravel installer
✔ via composer
✔ clone from github

4. Via Laravel Installer?
This will download laravel installer via composer
composer global require "laravel/installer"
This simple command will create app
laravel new blog

5. Other Options
Via composer
composer create-project --prefer-dist laravel/laravel blog
Get From github
https://github.com/laravel/laravel

6. Development Environment
After installing Laravel, you should configure your web
server's document / web root to be the public directory. The
index.php in this directory serves as the front controller for all
HTTP requests entering your application.

7. Laravel and Composer
✔ Add/remove/update packages
✔ Dump autoload file and generate new one
✔ Update laravel version

8. Laravel Directory Structure
✔ The app directory, as you might expect, contains the core code of your application.
✔ The bootstrap directory contains files that bootstrap the framework and configure
autoloading.
✔ The config directory, as the name implies, contains all of your application's
configuration files
✔ The database directory contains your database migration and seeds.
✔ The public directory contains the index.php file.
✔ The resources directory contains your views as well as your raw, un-compiled assets
such as views.

9. More Directories
✔ The routes directory contains all of the route definitions for your application.
- The web.php file contains routes that the RouteServiceProvider places in the web
middleware group,
- The api.php file contains routes that the RouteServiceProvider places in the api
middleware group,
- The console.php file is where you may define all of your Closure based console
commands.
✔ The storage directory contains your compiled Blade templates, file based sessions, file
caches, and other files generated by the framework.
✔ The vendor directory contains your Composer dependencies.

10. Magic Artisan
Command line tool for web artisans
php artisan list
Basically artisan is a php script which performs all actions in
Laravel for example:
✔ Manage migrations
✔ Check application routes
✔ Clear app cache
✔ Create Artisan command
✔ Run database seeds

11. Laravel And Namespaces
Laravel actively uses php namespaces to keep classnames
short and keep possibility to use same class names for
different components.
I would suggest everyone to use namespaces too. For
example all Admin functionality under Admin namespace.

12. Laravel Routes
Route::get('foo', callback);
Route::get('/welcome/{name?}', function($name = null){
return 'Name comes from paramatere >> '.$name;
})->where('name', '[A-Za-z]+');
Route::group(['prefix' => 'name'], function () {
Route::get('/user/profile', function () {
return 'name with profile.';
});
});

13. Routing Helping Methods
Route::current();
Route::currentRouteName();
Route::currentRouteAction();

14. Laravel Middlewares
Before / After Middleware
✔ Middleware provide a convenient mechanism for filtering HTTP
requests entering your application.
✔ php artisan make:middleware CheckAge
✔ Location of create middleware app/Http/Middleware
✔ If you want a middleware to run during every HTTP request to your application,
simply list the middleware class in the $middleware property of your
app/Http/Kernel.php class.

15. Laravel Controllers
php artisan make:controller newController –resource
There’s one main Controller class which all controllers should extend. By
default Laravel has BaseController (extends from Controller) and
HomeController (extends from BaseController)
class UserController extends Controller{
public function __construct(){
$this->middleware('auth');
}
}

16. Talking About Views
✔ All views are located in app/views directory
✔ Can be separated in subdirectories
✔ Can be both blade or simple php files
✔ It is recommended to use balde template engine since it is
very convenient and helps to eliminate random logic blocks
in views
✔ View::make(‘user.profile’, $data)

17. Insights In Blade
Comments
{{-- Comment visible only in blade file --}}
Loops:
@forelse($users as $user)
<li>{{ $user->name }}</li>
@empty
<p>No users</p>
@endforelse
Conditions:
@unless (Auth::check()) // similar to if(!)
You are not signed in.
@endunless

18. Models
✔ Models are located under app/ directory.
✔ php artisan make:model Userkelltontech.
✔ Table convention is "snake cased" flights for Flight Model.
✔ Protect mass update protected $fillable = ['name'];/ guarded
✔ AppFlight::findOrFail(1);
✔ FindOrFail(1);
✔ Flight::popular()->women()->orderBy('created_at')->get();
Enable soft Delete
✔ Add deleted_at
✔ use IlluminateDatabaseEloquentSoftDeletes;
✔ Use trait SoftDeletes;

19. Laravel Migrations
✔ php artisan make:migration create_users_table –create=flights
✔ Each migration has two functions up and down to migrate and rollback
$table->increments('id');
$table->string('name', 255);
$table->string('email', 255);
$table->integer('nerd_level');
$table->timestamps();

20. Useful General Modules
✔ Queue
✔ Events File
✔ Storage
✔ Laravel Notifications provide a simple, expressive API for sending
notifications across a variety of delivery channels such as email, Slack,
SMS

21. Request Lifecycle
✔ The entry point for all requests to a Laravel application is the
public/index.php file
✔ Index.php loads Composer generated autoloader definition then
retreives instance of bootstrap/app.php script.
✔ The incoming request is sent to kernel (HTTP/console) which contains
bootstrappers (These bootstrappers configure error handling, configure
logging, detect the application environment). It contains all middlewares
as well.
✔ One of the most important Kernel bootstrapping actions is loading the
service providers for your application.

22. Thanks
By
Swapnil Tripathi