Extending ResourceRegistrar to allow for 'singular' wildcards and wildcard renaming.

AppServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        //
    }

    /**
     * Register any application services.
     *
     * @return void
     */
    public function register()
    {
        $this->app->bind(
            \Illuminate\Routing\ResourceRegistrar::class,
            \App\Lib\ResourceRegistrar::class
        );
    }
}

ResourceRegistrar.php

<?php

namespace App\Lib;

use Illuminate\Routing\ResourceRegistrar as BaseRegistrar;

class ResourceRegistrar extends BaseRegistrar
{
    protected $wildcards = [];

    /**
     * Format a resource wildcard for usage.
     *
     * @param  string  $value
     * @return string
     */
    public function getResourceWildcard($value)
    {
        $wildcard = parent::getResourceWildcard($value);

        if (! is_array($this->wildcards) && $this->wildcards == 'singular')
            return str_singular($wildcard);

        return isset($this->wildcards[$wildcard]) ?
            $this->wildcards[$wildcard] : $wildcard;
    }

    /**
     * Route a resource to a controller.
     *
     * @param  string  $name
     * @param  string  $controller
     * @param  array   $options
     * @return void
     */
    public function register($name, $controller, array $options = [])
    {
        if (isset($options['wildcards']))
            $this->wildcards = $options['wildcards'];

        parent::register($name, $controller, $options);
    }
}

routes.php

<?php

// because why not
Route::group(['middleware' => 'web'], function () {
    
    Route::resource('users', 'UserController', ['wildcards' => 'singular']);
    Route::resource('users.photos', 'PhotoController', ['wildcards' => 'singular']);
    
    // or this for different wildcard names
    Route::resource('users.photos', 'PhotoController', ['wildcards' => [
        'users' => 'person', 'photos' => 'image'
    ]])
    
});