ASP.Net MVC 3 - unitOfWork.Commit（）不保存任何东西 [英] ASP.Net MVC 3 - unitOfWork.Commit() not saving anything

问题描述

我创建使用ASP.Net MVC 3和EF 4.1的Web应用程序，而我使用的模式的UnitOfWork，但没有得到被提交到数据库。这一切是相当新的给我，我不知道从哪里开始解决这个问题。

I created a web application using ASP.Net MVC 3 and EF 4.1, and I am using the UnitOfWork pattern, but nothing is getting committed to the database. All this is quite new to me, and I don't know where to start to resolve this issue.

根据我自己对这个职位创建我的Web应用程序：

I based myself on this post to create my web application:

<一个href=\"http://weblogs.asp.net/shijuvarghese/archive/2011/01/06/developing-web-apps-using-asp-net-mvc-3-razor-and-ef-$c$c-first-part-1.aspx\" rel=\"nofollow\">http://weblogs.asp.net/shijuvarghese/archive/2011/01/06/developing-web-apps-using-asp-net-mvc-3-razor-and-ef-$c$c-first-part-1.aspx

最后code，可以在这里得到 也有一个服务层和所述的UnitOfWork被注入到服务

The final code, which can be obtained here also has a service layer and the UnitOfWOrk is being injected into the services.

而不是采用基于统一2，因为他们在该项目的定制喷油器，我使用Unity.Mvc3。

Instead of using the custom injector based on Unity 2 as they are in that project, I am using Unity.Mvc3.

下面是我的IUnitOfWork类：

Here is my IUnitOfWork class:

public interface IUnitOfWork
{
    void Commit();
}

和这里是我的UnitOfWork类：

And here is my UnitOfWork class:

public class UnitOfWork : IUnitOfWork
{
    private readonly IDatabaseFactory databaseFactory;
    private MyProjectContext dataContext;

    public UnitOfWork(IDatabaseFactory databaseFactory)
    {
        this.databaseFactory = databaseFactory;
    }

    protected MyProjectContext DataContext
    {
        get { return dataContext ?? (dataContext = databaseFactory.Get()); }
    }

    public void Commit()
    {
        DataContext.Commit();
    }
}

这是我的服务类的样子如何之一：

And here is how one of my service class look like:

public class RegionService : IRegionService
{
    private readonly IRegionRepository regionRepository;
    private readonly IUnitOfWork unitOfWork;
    public RegionService(IRegionRepository regionRepository, IUnitOfWork unitOfWork)
    {
        this.regionRepository = regionRepository;
        this.unitOfWork = unitOfWork;
    }  
    ...
}

在启动时，我的UnitOfWork组件正在注册这样的：

At start-up, my UnitOfWork component is being registered like this:

container.RegisterType<IUnitOfWork, UnitOfWork>();

现在，不管我是否尝试插入，更新或删除，没有请求被发送到数据库。什么是我在这里丢失？

Now, no matter whether I try to insert, update or delete, no request is being sent to the database. What am my missing here?

更新

下面是DataContext.Commit（）的内容：

Here is the content of DataContext.Commit():

public class MyProjectContext : DbContext
{
     public DbSet<Region> Regions { get; set; }

    public virtual void Commit()
    {
        base.SaveChanges();
    }
}

和这里是databaseFactory.Get（）：

And here is databaseFactory.Get():

public interface IDatabaseFactory : IDisposable
{
    MyProjectContext Get();
}

更新＃2：

使用调试器，我注意到，只有在执行时选择我区的服务和控制器构造越来越被调用一次，但是进行更新时，他们被称为两次。这是正常的吗？

Using the debugger, I am noticing that my Region service and controller constructors are getting called once when performing only a select, but they are called twice when performing an update. Is this normal?

推荐答案

好吧，我发现罪魁祸首。它与我如何注册我的数据库厂做。

Ok, I found the culprit. It has to do with how I was registering my database factory.

而不是

container.RegisterType<IDatabaseFactory, DatabaseFactory>();

我需要

container.RegisterType<IDatabaseFactory, DatabaseFactory>(new HierarchicalLifetimeManager());

我发现本网站上的信息：

I found the information on this web site:

<一个href=\"http://www.devtrends.co.uk/blog/introducing-the-unity.mvc3-nuget-package-to-reconcile-mvc3-unity-and-idisposable\" rel=\"nofollow\">http://www.devtrends.co.uk/blog/introducing-the-unity.mvc3-nuget-package-to-reconcile-mvc3-unity-and-idisposable

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