Using custom class as a Facade in Laravel
Facades, in Laravel, is basically a way of using Laravel’s classes without injecting them into the constructor of the class in which you want to use them.
So, for instance, if you want to utilize Laravel’s Illuminate\Http\Request class in your controller, you can do this using dependency injection like so.
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
class UserController extends Controller
{
/**
* Store a new user.
*
* @param Request $request
* @return Response
*/
public function store(Request $request)
{
$name = $request->input('name');
//
}
}
The same can be done using the request facade Illuminate\Support\Facades\Request like so, which doesn’t involves dependency injection.
<?php
namespace App\Http\Controllers;
use Illuminate\Support\Facades\Request;
class UserController extends Controller
{
/**
* Store a new user.
*
* @return Response
*/
public function store()
{
$name = Request::input('name');
//
}
}
As you can see, we did this without using dependency injection. Facades do this by providing a “static” interface to classes that are available in the application’s service container. All of Laravel’s facades are defined in the Illuminate\Support\Facades namespace which can be consumed as I’ve described above.
But, what if you want to use your own defined class as a facade? Well, this can be done using a feature called “Real-Time Facades” that ships with Laravel in-built.
Custom Facades using Real-Time Facades
To use your custom class as a facade, all you have to do is to prefix the namespace of the class that you want to import with Facades, which makes the class a “real-time facade”.
So, for instance, you have this class called App\Currency and you want to consume it inside your controller, you can do this using dependency injection like so.
<?php
namespace App\Http\Controllers;
use App\Currency;
class OrderController extends Controller
{
/**
* Fetch currencytore a new user.
*
* @param Currency $currency
*/
public function fecthCurrency(Currency $currency)
{
$currentCurrency = $currency->getCurrentCurrency();
}
}
In order to use “real-time facades” in above example, all you’ve to do is prefix App\Currency with Facades like so.
<?php
namespace App\Http\Controllers;
use Facades\App\Currency;
class OrderController extends Controller
{
/**
* Fetch currency
*/
public function fecthCurrency()
{
$currentCurrency = Currency::getCurrentCurrency();
}
}
As you can see, you’ll be able to use the same class as a facade without a need of dependency injection, just like any other in-built class.
Easy-peasy, no?
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