访问MVC存储库中的Identity对象 [英] Accessing the Identity object in a MVC repository

问题描述

我有一个漂亮的通用存储库，为我的许多业务实体做基本的CRUD。
实体承载形成一个通用对象，它具有我为所有对象维护的几个字段。
例如ModifiedBy，CreatedBy，CreatedDate，ModifiedDate。

这些字段ModifiedBy和CreatedBy将在任何更新/保存之前始终设置。

我的问题是：
有没有办法从我的存储库中的MVC Web应用程序访问Identity对象？
我希望在一次镜头中将修改设置为身份用户的任何更新？

Best Regard，
Rod

解决方案

嗯，你可以直接在你的存储库中访问 HttpContext.Current.User.Identity ，但我不会推荐它，因为它将使您的存储库与HttpContext相关。

替代方法：

• 在创建/更新方法中添加一个显式的 IIdentity 参数，例如 void Update（T entity，IIdentity user）



• 解除获取当前用户的逻辑，例如： / p>
  
  

    class GenericRepository< T>：IRepository< T> {
   private readonly ICurrentUserFetcher currentUserFetcher; 
   public GenericRepository< T>（ICurrentUserFetcher currentUserFetcher）{
   this.currentUserFetcher = currentUserFetcher; 
  } 
   public void Update（T entity）{
   var currentUser = currentUserFetcher.Get（）; 
   ... 
  } 
  } 
  接口ICurrentUserFetcher {
   IIdentity Get（）; 
  } 
   class WebCurrentUserFetcher：ICurrentUserFetcher {
   public IIdentity Get（）{return HttpContext.Current.User.Identity;} 
  } 
    

  甚至更简单：

    class GenericRepository&T ;：存储库< T> {
   private readonly Func< IIdentity> currentUserFetcher; 
   public GenericRepository< T>（Func< IIdentity> currentUserFetcher）{
   this.currentUserFetcher = currentUserFetcher; 
  } 
   public void Update（T entity）{
   var currentUser = currentUserFetcher（）; 
   ... 
  } 
  } 
   var repo = new GenericRepository< Person>（（）=> HttpContext.Current.User.Identity）; 
    

  使用IoC容器接线。

I have a pretty generic repository that does basic CRUD for many of my business entities. The entities enherit form a generic object that has a few fields I maintain for all objects. eg. ModifiedBy, CreatedBy, CreatedDate, ModifiedDate.

These fields ModifiedBy and CreatedBy will always be set before any update/save.

My questions is: Is there any way to gain access to the Identity object from my MVC web application in my repositories? I was hoping to set the modifiedby to the identity user for any update in one shot??

Best Regard, Rod

解决方案

Well, you could access HttpContext.Current.User.Identity directly in your repositories, but I wouldn't recommend it as it will make your repositories HttpContext-dependent.

Alternatives:

• Add an explicit IIdentity parameter in your Create/Update methods, e.g. void Update(T entity, IIdentity user)

• Decouple the logic of "getting the current user", e.g.:

  class GenericRepository<T>: IRepository<T> {
      private readonly ICurrentUserFetcher currentUserFetcher;
      public GenericRepository<T>(ICurrentUserFetcher currentUserFetcher) {
          this.currentUserFetcher = currentUserFetcher;
      }
      public void Update(T entity) {
          var currentUser = currentUserFetcher.Get();
          ...
      }
  }
  interface ICurrentUserFetcher {
      IIdentity Get();
  }
  class WebCurrentUserFetcher: ICurrentUserFetcher {
      public IIdentity Get() {return HttpContext.Current.User.Identity;}
  }
  

  Or even simpler:

  class GenericRepository<T>: IRepository<T> {
      private readonly Func<IIdentity> currentUserFetcher;
      public GenericRepository<T>(Func<IIdentity> currentUserFetcher) {
          this.currentUserFetcher = currentUserFetcher;
      }
      public void Update(T entity) {
          var currentUser = currentUserFetcher();
          ...
      }
  }
  var repo = new GenericRepository<Person>(() => HttpContext.Current.User.Identity);
  

  Use an IoC container to wire things up.

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