In my recent laravel 5 project, I'm used to prepare my logics as Repository method. So here's my current directory structure. For example we have 'Car'.

所以首先我只创建目录，将其命名为app目录下的libs，并将其加载到composer.json

"autoload": {
        "classmap": [
            "database",
            "app/libs" //this is the new changes (remove this comment)
        ]
    }

然后我创建了一个子文件夹，称之为Car.在Car文件夹下创建两个文件"CarEloquent".php’用于Eloquent 的实现，CarInterface.php作为接口.

CarInterface

namespace App\libs\Car;
interface CarInterface {
    public function getAll();
    public function create(array $data);
    public function delete($id);
    public function getByID($id);
    public function update($id,array $data);
}

CarEloquent

namespace App\lib\Car;

use App\lib\Car\CarInterface;
use App\Car; //car model
class CarEloquent implements CarInterface {
    protected $car;

    function __construct(Car $a) {
        $this->car = $a;
    }
    public function getAll(){
        return $this->car->all();
    }
}

然后创建Car Service Provider绑定IOC控制器. 对于创建汽车服务Provider ，您还可以通过laravel使用php artisan命令. php artisan make:provider CarServiceProvider个

ServiceProvider

namespace App\Providers;

use Illuminate\Support\ServiceProvider;

class CarServiceProvider extends ServiceProvider {
   public function register() {
        $this->app->bind('App\lib\Car\CarInterface', 'App\lib\Car\CarEloquent');
    }

}

最后一步是将这些服务Provider 添加到config/app.php个Provider array.

'providers' => [
  'App\Providers\CatServiceProvider',
]

最后，我们准备在控制器中使用我们的存储库方法.

Example Controller

namespace App\Http\Controllers;
use App\lib\Car\CarInterface as Car;
class CarController extends Controller {
    protected $carObject;
    public function __construct(Car $c) {
        $this->carObject = $c;
    }
    public function getIndex(){
        $cars = $this->carObject->getAll();
        return view('cars.index')->with('cars',$cars);
    }
}

主要目的是实现在这里调用存储库方法来控制，但是您需要根据需要使用它们.

更新

CarEloqent基本上可以帮助我们改进数据库实现，例如，在将来，如果您想为其他数据库(如redis)实现相同的功能，只需添加另一个类CarRedis，并从服务器提供程序更改实现文件路径.

更新 1: Good Resource

http://programmingarehard.com/2014/03/12/what-to-return-from-repositories.html

[book] From Apprentice to Artisan by Taylor Otwell

Very good explanation about repository method and software design principle commonly called separation of concerns. You should read this book.

如果您仍然对实现这些行为感到困惑，请让我知道，但如果我发现需要更改或更新或符合要求，我将密切关注这个问题以更新此答案.