file/app/Http/Middleware/BindCollectionModelMiddleware.php

<?php

namespace App\Http\Middleware;

use App\Models\Collection;
use Closure;
use Illuminate\Http\Request;
use Illuminate\support\Str;

class BindCollectionModelMiddleware
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure(\Illuminate\Http\Request): (\Illuminate\Http\Response|\Illuminate\Http\RedirectResponse)  $next
     * @return \Illuminate\Http\Response|\Illuminate\Http\RedirectResponse
     */
    public function handle(Request $request, Closure $next)
    {
        if (($request->route()->action['as'] == 'api.files.store') || ($request->route()->action['as'] == "api.files.show") || ($request->route()->action['as'] == 'api.files.update')) {
            app()->singleton('collection', function () use ($request) {
                return Collection::where('name', $request->route('collection_name'))->firstOrFail();
            });
        }

        if ($request->route()->action['as'] == 'api.file.private') {
            app()->singleton('collection', function () use ($request) {
                return Collection::where('name', $request->route('collection_name'))->firstOrFail();
            });
        }

        return $next($request);
    }
}