Freek.dev

Glide is an easy to use image manipulation library by Jonathan Reinink. It was bumped to version 1.0.0 a few days ago. Glide can created optimized images on the fly by levering url's such as /img/users/1.jpg?w=300&h=400&fit=crop. Take a look at the example in the Glide documentation to know more.

I think Glide provides a very nice API to create image manipulations. Unfortunately it isn't very easy to use the API to generate an image using code. So I created a little package for that called laravel-glide. All new major versions of Spatie packages will require PHP 7, laravel-glide is no exception to this.

Here's an example of how to create a greyscale version image with a maximum width of 50 pixels.

GlideImage::create($pathToImage)
    ->modify(['filt'=>'greyscale', 'w'=> 50])
    ->save($pathToWhereToSaveTheManipulatedImage);

Take a look at Glide's image API to see which parameters you can pass to the modify-method.

Read more

Laravel 5.2 provides some nice additions to the framework. One handy feature that I don't see listed in the release notes is that Collection now is macroable. Using it's macro function you can easily extend Illuminate\Support\Collection with your own custom functions.

Take a look at this piece of code to uppercase every string in a collection.

$uppercaseWords = collect(['code', 'ferengi'])->map(function($word)  {
   return strtoupper($word);
});

That's good code, but image you need to uppercase a lot of collections. Typing the same closure will get very tiresome. Let's improve this with a macro.

use Illuminate\Support\Collection;

Collection::macro('uppercase', function() {

    return collect($this->items)->map(function($word) {
        return strtoupper($word);
    });

});

You could create a service provider to load up these macro's. Now that the macro is defined let's uppercase collections like there's no tomorrow:

$uppercaseWords = collect(['code', 'ferengi'])->uppercase();
$moreUppercaseWords = collect(['love', 'the', 'facade'])->uppercase();
$evenMoreUppercaseWords = collect(['activerecord', 'forever'])->uppercase();

You could be thinking "Why should I use a macro? I can easily to this with a regular function.". Consider this piece of code.

function uppercase($collection) {
...
}

$uppercaseWords = uppercase(collect(['halo','five']));

It works, but you have to encapsulate the collection with your function. The last executed function is put first, which is confusing. With macro's you can still chain functions and greatly improve readability.

//lots of functions
function4(function3(function2(function1(collect(['jack','cheats'])))));

//lots of macros
collect(['i', 'want', 'to', 'live', 'in', 'a', 'desert'])
  ->function1()
  ->function2()
  ->function3()
  ->function4();

Sure, the examples use in this post were a bit contrived, but I hope you see that collection macro's can be very handy.

EDIT: it seems that collection macro's were introduced in Laravel 5.1.25 a month ago.

Read more

Povilas Korop shared a neat trick at Laraveldaily.com today.

Let’s imagine the situation: you have a big database table (like 10 000 rows or bigger) and you need to run an update to one column. But you cannot run just SQL query – there is some PHP logic behind it. So foreach loop could potentially take forever or bump into a default 30-second script limit. Luckily, Laravel has a neat solution for it.

Read more

Every year the city of Antwerp (my hometown :-)) organises lots of activities, such as an Ice rink, a Christmas market, a Santa Run and of course fireworks in the month of december. To inform people of which activities are happening where and when my team and I created a mobile app commissioned by the city council. The app is called "Winter in A" and is available on both Android's Play Store and iOS' App Store.

The administrators of the app can enter content in a custom installation of Blender, our Laravel based application. Blender will write of a bunch of json-files that are read by the mobile apps. Here's the file for all the events (english localization): https://api.winterapp.be/en/events.json. We use our homegrown laravel-fractal package to easily transform database records to json. Here's the export handler that's in charge of the exporting of events:

namespace App\Services\Export\ExportHandlers;

use App\Repositories\EventRepository;
use App\Services\Export\ExportHandler;
use App\Services\Export\Transformers\EventTransformer;

class Events implements ExportHandler
{
    /**
     * @var \App\Repositories\EventRepository
     */
    protected $eventRepository;

    public function __construct(EventRepository $eventRepository)
    {
        $this->eventRepository = $eventRepository;
    }

    /**
     * Get the json for the given locale.
     *
     * @param string $locale
     *
     * @return mixed
     */
    public function getJsonForLocale($locale)
    {
        return fractal()
            ->collection($this->eventRepository->getAllOnline())
            ->transformWith(new EventTransformer($locale))
            ->toJson();
    }
}

The EventTransformer itself:

namespace App\Services\Export\Transformers;

use App\Models\Event;
use App\Services\Export\Format;
use App\Services\ValueObjects\Period;
use League\Fractal\TransformerAbstract;
use Spatie\MediaLibrary\Media;

class EventTransformer extends TransformerAbstract
{
    /**
     * @var
     */
    protected $locale;

    public function __construct($locale)
    {
        $this->locale = $locale;
    }

    public function transform(Event $event)
    {
        return [
            'id' => $event->id,
            'name' => $event->translate($this->locale)->name,
            'text' => htmlToMarkdown($event->translate($this->locale)->text),
            ...
            'images' => $event->getMedia('images')->map(function (Media $media) {
                return [
                   'thumb' => $media->getUrl('thumb'),
                   'full' => $media->getUrl('full')
                ];
            }),
        ];
    }
}

To handle peaks in usage of the app we use CloudFlare. In this article they explain what they do. Cloudflare has this awesome feature called "Always online", to make sure the API is online even if our server is not.

The first events of Winter in Antwerp are starting tomorrow. The last ones are scheduled in the first days of 2016. I'll share some more tidbits of the code then.

Read more

If you're using PhpStorm you probably make heavy use of it's autocomplete features. The IDE can, for most classes, suggests all accessible functions. Unfortunately, when a function has a dynamic return type PHPStorm will leave you out in the cold. So when resolving something out of Laravel's IoC-container PhpStorm cannot help you. Here's an example with one of the repositories of Blender:

PhpStorm can't suggest functions because it doesn't know which class the make-function will return. Let's fix that.

The DynamicReturnType plugin provides a way to dynamically specify the return type of a function. You can install it like every other PHPStorm plugin. Next you'll have to create a file called dynamicReturnTypeMeta.json in the root of your project with this contents:

{
    "methodCalls": [
        {
            "class": "\\Illuminate\\Contracts\\Foundation\\Application",
            "method": "make",
            "position": 0
        }
    ]
}
```
This configuration will tell PHPStorm that the return type of the make-function of Illuminate\Contracts\Foundation\Application will return an instance of class specified in the first argument.
With this file in place PHPStorm can perform autocompleting:

To learn all other possibilities the plugin offers, read it's documentation on GitHub.
Update: As Nicolas Widart mentions in the comments below there's another (and maybe easier way) to get autocompletion when resolving stuff from Laravel's IoC-container. The ide-helper package can generate a meta file that, when indexed, will make PhpStorm understand which object gets returned.

                            

                                            
                            Read more