Remember a visitor's original referer in session. The referer is (highest priority first):
- The
utm_sourcequery parameter - The domain from the request's
Refererheader if there's an external host in the URL - Empty
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You can install the package via composer:
composer require spatie/laravel-refererThe package will automatically register itself in Laravel 5.5. In Laravel 5.4. you'll manually need to register the Spatie\Referer\RefererServiceProvider service provider in config/app.php.
You can publish the config file with:
php artisan vendor:publish --provider="Spatie\Referer\RefererServiceProvider"
Publishing the config file is necessary if you want to change the key in which the referer is stored in the session or if you want to disable a referer source.
return [
/*
* The key that will be used to remember the referer in the session.
*/
'session_key' => 'referer',
/*
* The sources used to determine the referer.
*/
'sources' => [
Spatie\Referer\Sources\UtmSource::class,
Spatie\Referer\Sources\RequestHeader::class,
],
];To capture the referer, all you need to do is add the Spatie\Referer\CaptureReferer middleware to your middleware stack. In most configuration's, you'll only want to capture the referer in "web" requests, so it makes sense to register it in the web stack. Make sure it comes after Laravel's StartSession middleware!
// app/Http/Kernel.php
protected $middlewareGroups = [
'web' => [
// ...
\Illuminate\Session\Middleware\StartSession::class,
// ...
\Spatie\Referer\CaptureReferer::class,
// ...
],
// ...
];The easiest way to retrieve the referer is by just resolving it out of the container:
use Spatie\Referer\Referer;
$referer = app(Referer::class)->get(); // 'google.com'Or you could opt to use Laravel's automatic facades:
use Facades\Spatie\Referer\Referer;
$referer = Referer::get(); // 'google.com'The captured referer is (from high to low priority):
- The
utm_sourcequery parameter, or: - The domain from the request's
Refererheader if there's an external host in the URL, or: - Empty
An empty referer will never overwrite an exisiting referer. So if a visitor comes from google.com and visits a few pages on your site, those pages won't affect the referer since local hosts are ignored.
The Referer class provides dedicated methods to forget, or manually set the referer.
use Facades\Spatie\Referer\Referer;
Referer::put('google.com');
Referer::get(); // 'google.com'
Referer::forget();
Referer::get(); // ''The referer is determined by doing checks on various sources, which are defined in the configuration.
return [
// ...
'sources' => [
Spatie\Referer\Sources\UtmSource::class,
Spatie\Referer\Sources\RequestHeader::class,
],
];A source implements the Source interface, and requires one method, getReferer. If a source is able to determine a referer, other sources will be ignored. In other words, the sources array is ordered by priority.
In the next example, we'll add a source that can use a ?ref query parameter to determine the referer. Additionally, we'll ignore ?utm_source parameters.
First, create the source implementations:
namespace App\Referer;
use Illuminate\Http\Request;
use Spatie\Referer\Source;
class RefParameter implements Source
{
public function getReferer(Request $request): string
{
return $request->get('ref', '');
}
}Then register your source in the sources array. We'll also disable the utm_source while we're at it.
return [
// ...
'sources' => [
App\Referer\RefParameter::class,
Spatie\Referer\Sources\RequestHeader::class,
],
];That's it! Source implementations can be this simple, or more advanced if necessary.
Please see CHANGELOG for more information what has changed recently.
composer testPlease see CONTRIBUTING for details.
If you've found a bug regarding security please mail [email protected] instead of using the issue tracker.
The MIT License (MIT). Please see License File for more information.
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