autofac mvc3 属性注入

发布于 2024-11-29 11:18:10 字数 577 浏览 1 评论 0原文

我正在从事 asp.net mvc3 项目。我正在使用 autofac 进行 DI。我有一个属性说

public class MustBeLoggedInAttribute : ActionFilterAttribute
{
    private IUserContext Context {get;set;}

    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
         if (!Context.IsLoggedIn)
             filterContext.Result = new RedirectResult("/users/logon");  
         base.OnActionExecuting(filterContext);
    }

}

所以我需要将我的依赖项 IUserContext 注入到该属性中。我将如何实现它。我在actionfiterprovider上到处找到了代码，但找不到任何完整的东西。

帮助将不胜感激。

问候

帕明德

原文

I working on asp.net mvc3 project. I am using autofac for DI.
I have an attribute Say

public class MustBeLoggedInAttribute : ActionFilterAttribute
{
    private IUserContext Context {get;set;}

    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
         if (!Context.IsLoggedIn)
             filterContext.Result = new RedirectResult("/users/logon");  
         base.OnActionExecuting(filterContext);
    }

}

So I need to inject my dependency IUserContext to this attribute.
How would I achive it. I found codes here and there on actionfiterprovider,
but couldnt find anything complete.

Help will be appreciated.

Regards

Parminder

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恍梦境° 2024-12-06 11:18:10

来自 Alex Meyer-Gleaves 在 Autofac wiki 上的文章： http://code .google.com/p/autofac/wiki/Mvc3Integration#Filter_Attribute_Property_Injection

您需要调用 RegisterFilterProvider()扩展方法：

using Autofac.Integration.Mvc;

var builder = new ContainerBuilder();
builder.RegisterFilterProvider();

这将根据需要将属性注入到过滤器属性中（据我所知，您不需要向 Autofac 注册属性类型即可使其工作。）

希望这会有所帮助，

Nick

From Alex Meyer-Gleaves' write-up on the Autofac wiki: http://code.google.com/p/autofac/wiki/Mvc3Integration#Filter_Attribute_Property_Injection

You need to call the RegisterFilterProvider() extension method:

using Autofac.Integration.Mvc;

var builder = new ContainerBuilder();
builder.RegisterFilterProvider();

This will inject properties into filter attributes as required (as far as I can tell, you don't need to register the attribute types with Autofac for this to work.)

Hope this helps,

Nick

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