ASP.NET MVC自定义路由约束和依赖注入 [英] ASP.NET MVC Custom Route Constraints and Dependency Injection

问题描述

在我的ASP.NET MVC 3应用程序，我已经定义如下图所示的路径约束：

 公共类CountryRouteConstraint：IRouteConstraint {    私人只读ICountryRepository＆LT;国家＆GT; _countryRepo;    公共CountryRouteConstraint（ICountryRepository＆LT;国家＆GT; countryRepo）{
        _countryRepo = countryRepo;
    }    公共BOOL匹配（HttpContextBase HttpContext的，路由路径，字符串参数名称，RouteValueDictionary价值，RouteDirection routeDirection）{        //做数据库查询这里        //根据你从数据库得到的值返回结果
        返回true;
    }
}
 

我使用Ninject作为我的应用程序的IoC容器，它实现的IDependencyResolver 和我登记我的依赖性：

 私有静态无效RegisterServices（内核的iKernel）{        kernel.Bind＆LT; ICountryRepository＆LT;国家＆GT;＆GT;（）。
            到＆lt; CountryRepository＆GT;（）;
    }
 

我如何使用这条路线的约束与依赖注入友好的方式？

修改

我不能找到一种方法，通过对单元测试这种依赖关系：

  [事实]
公共无效country_route_should_pass（）{    VAR mockContext =新的模拟＆LT; HttpContextBase＆GT;（）;
    mockContext.Setup（C =＆GT; c.Request.Ap prelativeCurrentExecutionFilePath）.Returns（〜/国家/意大利）;    VAR路线=新RouteCollection（）;
    TugberkUgurlu.ReservationHub.Web.Routes.RegisterRoutes（路线）;    的RouteData的RouteData = routes.GetRouteData（mockContext.Object）;    Assert.NotNull（的RouteData）;
    Assert.Equal（国家，routeData.Values​​ [控制器]）;
    Assert.Equal（指数，routeData.Values​​ [行动]）;
    Assert.Equal（意大利，routeData.Values​​ [国]）;
}
 

解决方案

  routes.MapRoute（
    国家
    国家/ {}国家，
    新{
        控制器=国家
        行动=索引
    }，
    新{
        国家=新CountryRouteConstraint（
            DependencyResolver.Current.GetService＆LT; ICountryRepository＆LT;国家＆GT;＆GT;（）
        ）
    }
）;
 

On my ASP.NET MVC 3 App, I have a route constraint defined like below:

public class CountryRouteConstraint : IRouteConstraint {

    private readonly ICountryRepository<Country> _countryRepo;

    public CountryRouteConstraint(ICountryRepository<Country> countryRepo) {
        _countryRepo = countryRepo;
    }

    public bool Match(HttpContextBase httpContext, Route route, string parameterName, RouteValueDictionary values, RouteDirection routeDirection) {

        //do the database look-up here

        //return the result according the value you got from DB
        return true;
    }
}

I am using Ninject as IoC container on my app which implements IDependencyResolver and I registered my dependency:

    private static void RegisterServices(IKernel kernel) {

        kernel.Bind<ICountryRepository<Country>>().
            To<CountryRepository>();
    }    

How can I use this route constraint with a dependency injection friendly manner?

EDIT

I cannot find a way to pass this dependency on unit test:

[Fact]
public void country_route_should_pass() {

    var mockContext = new Mock<HttpContextBase>();
    mockContext.Setup(c => c.Request.AppRelativeCurrentExecutionFilePath).Returns("~/countries/italy");

    var routes = new RouteCollection();
    TugberkUgurlu.ReservationHub.Web.Routes.RegisterRoutes(routes);

    RouteData routeData = routes.GetRouteData(mockContext.Object);

    Assert.NotNull(routeData);
    Assert.Equal("Countries", routeData.Values["controller"]);
    Assert.Equal("Index", routeData.Values["action"]);
    Assert.Equal("italy", routeData.Values["country"]);
}

解决方案

routes.MapRoute(
    "Countries",
    "countries/{country}",
    new { 
        controller = "Countries", 
        action = "Index" 
    },
    new { 
        country = new CountryRouteConstraint(
            DependencyResolver.Current.GetService<ICountryRepository<Country>>()
        ) 
    }
);

这篇关于ASP.NET MVC自定义路由约束和依赖注入的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！