This provides a model-level control for URL generator classes for spatie/laravel-medialibrary. See PR: https://github.com/spatie/laravel-medialibrary/pull/2809. Tested on: spatie/laravel-medialibrary version: 10.1.1

InSomeModelWithMedia.php

    /**
     * Get the classpath of the url generator used by the model.
     *
     * @return string
     */
    public function getUrlGeneratorClass(): string
    {
        return \App\Services\SpatieMediaLibrary\SomeUrlGenerator::class;
    }

ModelUrlGeneratorResolver.php

<?php

namespace App\Services\SpatieMediaLibrary;

use DateTimeInterface;
use Illuminate\Support\Str;
use Spatie\MediaLibrary\Support\UrlGenerator\DefaultUrlGenerator;
use Spatie\MediaLibrary\Support\UrlGenerator\UrlGenerator;

class ModelUrlGeneratorResolver extends DefaultUrlGenerator
{
    public function getUrl(): string
    {
        return $this->resolveGeneratorFromModelType()->getUrl();
    }

    public function getTemporaryUrl(DateTimeInterface $expiration, array $options = []): string
    {
        return $this->resolveGeneratorFromModelType()->getDisk()->temporaryUrl($this->resolveGeneratorFromModelType()->getPathRelativeToRoot(), $expiration, $options);
    }

    public function getBaseMediaDirectoryUrl(): string
    {
        return $this->resolveGeneratorFromModelType()->getDisk()->url('/');
    }

    public function getPath(): string
    {
        return $this->resolveGeneratorFromModelType()->getRootOfDisk().$this->resolveGeneratorFromModelType()->getPathRelativeToRoot();
    }

    public function getResponsiveImagesDirectoryUrl(): string
    {
        $base = Str::finish($this->resolveGeneratorFromModelType()->getBaseMediaDirectoryUrl(), '/');

        $path = $this->pathGenerator->resolveGeneratorFromModelType()->getPathForResponsiveImages($this->media);

        return Str::finish(url($base.$path), '/');
    }

    protected function getRootOfDisk(): string
    {
        return config("filesystems.disks.{$this->resolveGeneratorFromModelType()->getDiskName()}.root") . '/';
    }

    /**
     * Resolve the generator from the model type.
     *
     * @return UrlGenerator
     */
    public function resolveGeneratorFromModelType(): UrlGenerator
    {
        $generator = DefaultUrlGenerator::class;

        if (method_exists($this->media->model, 'getUrlGeneratorClass')) {
            $generator = $this->media->model->getUrlGeneratorClass();
        }

        return tap(new $generator($this->config), function (UrlGenerator $generator) {
            if (! is_null($this->conversion)) {
                $generator->setConversion($this->conversion);
            }

            return $generator->setPathGenerator($this->pathGenerator)
                             ->setMedia($this->media);
        });
    }
}