Service Container in laravel 5

Hi

Today, we learn service container in larave 5.2

The Laravel service container is a powerful tool for managing class dependencies and performing dependency injection. Dependency injection is a fancy phrase that essentially means this: class dependencies are "injected" into the class via the constructor or, in some cases, "setter" methods.


<?php

namespace App\Jobs;

use App\User;
use Illuminate\Contracts\Mail\Mailer;
use Illuminate\Contracts\Bus\SelfHandling;

class PurchasePodcast implements SelfHandling
{
    /**
     * The mailer implementation.
     */
    protected $mailer;

    /**
     * Create a new instance.
     *
     * @param  Mailer  $mailer
     * @return void
     */
    public function __construct(Mailer $mailer)
    {
        $this->mailer = $mailer;
    }

    /**
     * Purchase a podcast.
     *
     * @return void
     */
    public function handle()
    {
        //
    }
}


In this example, the PurchasePodcast job needs to send e-mails when a podcast is purchased. So, we will inject a service that is able to send e-mails. Since the service is injected, we are able to easily swap it out with another implementation. We are also able to easily "mock", or create a dummy implementation of the mailer when testing our application.

Thanks.