控制器 - ＆GT;服务 - ＆GT;资源库：是否服务实体映射到视图模型？ [英] Controller -> Service -> Repository: Does service map Entity to ViewModel?

问题描述

我的避风港MVC应用程序，与M，包括服务和信息库层。

I haven MVC app, with "M" including Service and Repository layers.

不过，我在何处以及如何做一些事情有点糊涂了。

However, I am a little confused as to where and how to do a couple of things.

1. 一个服务调用两个库，或调用它自己的仓库和其他服务

例如

我有一个ReferenceDataService，这与我的参考表处理所有的逻辑的CRUD。

I have a ReferenceDataService, which handles all of the logic for CRUD with my reference tables.

然后在我的CustomerService我需要'R'我引用数据来获得如说明，而不是标识。所以，我称了ReferenceDataService或ReferenceDataRepository？

Then in my "CustomerService" I need to 'R' my reference data to get e.g. Description instead of Id. So, do I call the ReferenceDataService or ReferenceDataRepository?

1. 在一些层，我想从实体映射到视图模型。

难道我这样做是我的服务层，还是在控制器？

Do I do this in my Service layer, or in the Controller?

例如。请问我ServiceLayer做映射/逻辑从虚拟机实体，回来了？

e.g. Does my ServiceLayer do the mapping/logic from VM to Entity and back?

感谢：）

推荐答案

• 库交谈底层数据源。


• 服务层的会谈与域模型库。这需要/传递域模型从/存储库层。


• 控制器会谈服务层。控制器会/通域模型从/到服务层。


• 控制器调用映射层（如果有的话）的域模型和视图模型之间进行映射。如果你没有一个映射层，你可以做你的控制器的映射虽然这可能很快成为在这种情况下 AutoMapper 可以作为一个非常方便的映射层。

• Repositories talk to an underlying data source.
• Service layer talks to repositories with domain models. It takes/passes domain models from/to the repository layer.
• Controller talks to service layer. Controller takes/passes domain models from/to the service layer.
• Controller calls mapping layer (if any) to map between the domain models and view models. If you don't have a mapping layer you could do the mapping in your controller although this could quickly become cumbersome in which case AutoMapper could serve as a very handy mapping layer.

另一个更简单的情况是，当你不需要的服务层，它往往是较小的应用程序的情况下。服务层带来任何好处。因此，控制器将直接与储存库的域模型。

Another more simpler scenario is when you don't need a service layer which is often the case in smaller applications. A service layer brings no benefit. So the controller talks directly to the repositories with the domain models.

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