hannesvdvreken

<?php

use Guzzle\Http\Client;
use Guzzle\Http\Exception\BadResponseException;
use Illuminate\Console\Command;
use Illuminate\Foundation\Application;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Input\InputArgument;

class MazeCommand extends Command

hannesvdvreken

IoC containers

At work I'm currently modernising a legacy project without composer into an application with less code and thus less bugs. The first composer package I required was an application container to add Dependency Injection to the project. The container I used is called orno/di.

I bootstrapped the container in the index file. After that I registered some basic stuff to it like an object of the Symfony Request class, a Monolog logger with rotating log files, ... Finally I was able to adapt the existing old router to resolve the controllers and their dependencies from the IoC container.

In a couple of hours I had enabled the project to adopt and inject composer loaded classes within minutes.

Auto resolving

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$app->bind('\Vendor\Chat\Client', function ($app) {
    $config = $app['config'];
    $guzzle = $app->make('Guzzle\Http\Client');

    $baseUrl = $config->get('services.chat.base_url');
    $token = $config->get('services.chat.token');

    return new Client($guzzle, $baseUrl, $token);
});

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$app->bind('\Vendor\Chat\Client', function (GuzzleHttp\Client $client, Repository $config) {
    $baseUrl = $config->get('services.chat.base_url');
    $token = $config->get('services.chat.token');

    return new Client($guzzle, $baseUrl, $token);
});

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$posts = Cache::remember('posts', $minutes, function (PostsRepository $repo) {
    return $repo->all();
});

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Schema::table('users', function (Blueprint $table, AddressConverter $converter) {
    ...
});

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$posts = Cache::remember('posts', $minutes, App::wrap(function (PostsRepository $repo) {
    return $repo->all();
}));

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set_exception_handler(App::wrap(function (Whoops\Run) {...}));

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$callables = [
    'Class::staticMethodName',
    '\Namespace\method_name',
    [$object, 'methodName'],
    function (\Vendor\Dependency $object) {...},
];

// This will work for every item in the array
foreach ($callables as $callable) {
    call_user_func($callable);

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$app->bind('\Vendor\Contracts\Client', '\Vendor\Client');