问题描述
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我了解MVC就是将事物放置在正确的位置以及它应该放置的逻辑位置。我的控制器操作已经充满了业务逻辑(与数据存储无关),我觉得我应该开始将一些逻辑移到另一个地方。
我在哪里放置此逻辑是否有约定?例如,我在controllers文件中有以下控制器:
adminPowerController
public ActionResult Create(string test1)
// business logic
// business logic
// business logic
return View();
}
public ActionResult Index(string test1)
// business logic
// business logic
// business logic
return View();
}
解决方法
建议将业务逻辑放入服务层。因此,您可以定义一个代表业务操作的接口:
public interface IMyService
{
DomainModel SomeOperation(string input);
}
然后执行此服务。最终,控制器将使用它:
public class MyController: Controller
{
private readonly IMyService _service;
public class MyController(IMyService service)
{
_service = service;
}
public ActionResult Create(string input)
{
var model = _service.SomeOperation(input);
var viewModel = Mapper.Map<DomainModel,ViewModel>(model);
return View(viewModel);
}
}
并配置您的DI框架,以将服务的正确实现传递到控制器中。
备注:在我提供的示例中,我使用了AutoMapper在域模型和视图模型之间转换,该模型传递给视图。
, 我在MVC项目中倾向于做的是在操作之外保留尽可能多的业务逻辑,以便我可以对其进行测试
在某些情况下,我创建一个服务层,然后使用它
public class QuizRunner : IQuizRunner
{
private readonly IServiceProxyclient _quizServiceProxy;
public QuizRunner(IServiceProxyclient quizServiceProxy)
{
_quizServiceProxy = quizServiceProxy;
}
public GameCategory GetPrizeGameCategory(int prizeId)
{
return _quizServiceProxy.GetGameCategoryForPrizeId(prizeId);
}
}
public interface IQuizRunner
{
GameCategory GetPrizeGameCategory(int prizeId);
}
private IQuizRunner_serviceClass;
public AdminPowercontroller(IQuizRunner serviceClass)
{
_serviceClass = serviceClass;
}
public ActionResult Create(string test1)
var itemsFromLogic = _serviceClass.Method1();
return View();
}
public ActionResult Index(string test1)
var gameCategory = _serviceClass.GetPrizeGameCategory(test1);
var viewModel = Mapper.Map<GameCategory,GameCategoryViewModel>(gameCategory);
return View(viewModel);
}
这使我的操作可以与服务层分开进行测试,而无需依赖
希望这可以帮助
保罗
, 业务逻辑应存在于与MVC框架和其他内容分开的域模型中。
真实的例子...
应用程序(我的域实体之一)控制器:
[HttpPost]
public ActionResult Withdraw(int applicationId){
//find it from repository or whatever
var app=FindApplication(applicationId);
//force it do do stuff
a.Withdraw();
//send back some response
return RedirectToAction(\"Application\",new{applicationId});
}
应用实体本身:
public class Application{
public void Withdraw(){
//check if current user is authorized to withdraw applications
Authorize<CanWithdrawApplications>();
//check if application itself can be withdrawn
ThrowIf(!CanBeWithdrawn(),\"Application can\'t be withdrawn.\");
//apply state changes
IsWithdrawn=true;
//raise domain event
Raise(new Withdrawn(this));
}
public bool CanBeWithdrawn(){
return !IsWithdrawn && !Project.Contract.IsSigned;
}
}
有关此的更多信息,您可能需要查看什么是域驱动的设计。