Dynamic Dependency Injection - MAKE SURE YOUR MODEL IMPLEMENTS ModelInterface!!

CrudController.php

<?php

namespace App\Http\Controllers;

use App\ModelInterface;
use Illuminate\Http\Request;

use App\Http\Requests;

class CrudController extends Controller {

    protected $model;

    /**
     * CrudController constructor.
     * @param $model
     */
    public function __construct(ModelInterface $model) {
        $this->model = $model;
    }


    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index() {
        return $this->model->all();
    }
}

ModelInterface.php

<?php

namespace App;

interface ModelInterface {

}

routes.php

<?php

Route::get('/{model}', function($model){

    // Build App Object
    $app = app();

    // Bind Dynamic DI
    $app->bind(\App\ModelInterface::class, '\\App\\' . $model);

    // Run controller and method
    $controller = $app->make(\App\Http\Controllers\CrudController::class);
    return $controller->callAction('index', []);
});