房产注入到行为过滤器 [英] Property Injection into an Action Filter

问题描述

我试图让物业注射液对自定义操作筛选器属性的工作。这是因为它的工作是应该，但是，我想使用DI该物业本身。我的过滤器看起来像这样

I'm trying to get Property Injection working on a Custom Action Filter Attribute. It is working as it is supposed to, however, I'd like to use DI on the Property itself. My filter looks like this

[AttributeUsage(AttributeTargets.Class)]
public sealed class HeaderFilterAttribute : ActionFilterAttribute
{
    public IMarketService MarketService
    { get; set; }

    public override void OnActionExecuted(ActionExecutedContext filterContext)
    {
        var view = (ViewResultBase)filterContext.Result;

        if (view != null)
        {
            BaseViewModel viewModel = view.ViewData.Model as BaseViewModel;
            if (viewModel != null)
                viewModel.Header = GetHeaderScript();
        }
        base.OnActionExecuted(filterContext);
    }

   private string GetHeaderScript()
   {
     //Use MarketService here and return header script
     return "script";
   }
}

这是我如何配置使用StructureMap属性。里面我的引导程序类

This is how I'm configuring the property using StructureMap inside my BootStrapper class.

            //HeaderFilterAttribute
        IMarketRepository marketRepository = new SqlMarketRepository();
        IMarketService marketService = new MarketService(marketRepository);
        ObjectFactory.Container.Configure(r => r.ForConcreteType<HeaderFilterAttribute>().
                                          Configure.WithProperty("MarketService").
                                          EqualTo(marketService));

我的问题是我没有SqlMarketRepository访问，因为我所有的具体类型都通过DI和我注入真的不希望在我的引导程序使用的具体类型。因此，最终的现在的问题是，我怎么注入MarketService到过滤器属性，而不诉诸上面？ ：）

My problem is I do not have access to SqlMarketRepository since all my concrete types are injected via DI and I really don't want to use concrete types in my bootstrapper. So the ultimate question now is, how do I inject MarketService into the Filter attribute without resorting to the above? :)

推荐答案

在你的ObjectFactory.Initialize（）调用，添加以下行：

In your ObjectFactory.Initialize() call, add the following line:

SetAllProperties(x => x.OfType<IMarketService>());

这将注入的配置IMarketService实例入式IMarketService的任何财产，从容器中取出任何对象

That will inject the configured IMarketService instance into any property of type IMarketService, on any object retrieved from the container.

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