Installation & setup in Lumen

Lumen configuration is slightly more involved but features and API are identical to Laravel.

Install using this command:

composer require spatie/laravel-medialibrary:^4.0.0

Uncomment the following lines in the bootstrap file:

// bootstrap/app.php:
$app->withFacades();
$app->withEloquent();

Configure the laravel-medialibrary service provider (and AppServiceProvider if not already enabled):

// bootstrap/app.php:
$app->register(App\Providers\AppServiceProvider::class);
$app->register(Spatie\MediaLibrary\MediaLibraryServiceProvider::class);

Update the AppServiceProvider register method to bind the filesystem manager to the IOC container:

// app/Providers/AppServiceProvider.php
public function register()
{
    $this->app->singleton('filesystem', function ($app) {
        return $app->loadComponent('filesystems', 'Illuminate\Filesystem\FilesystemServiceProvider', 'filesystem');
    });

    $this->app->bind('Illuminate\Contracts\Filesystem\Factory', function($app) {
        return new \Illuminate\Filesystem\FilesystemManager($app);
    });
}

Manually copy the package config file to <yourproject>\config\medialibrary.php (you may need to create the config directory if it does not already exist).

Copy the Laravel filesystem config file into <yourproject>\config\filesystems.php. You should add a disk configuration to the filesystem config matching the defaultFilesystem specified in the laravel-medialibrary config file.

Finally, update boostrap/app.php to load both config files:

// bootstrap/app.php
$app->configure('laravel-medialibrary');
$app->configure('filesystems');