路由错误访问操作

Question

默认情况下,MVC中的URL路由是{controller}/{action}/{id}.然后我们可以访问mydomain.com/Products/Details/1等.

现在,我已经注册了另一个名为CategoryLandingPage的地图路线.

routes.MapRoute(
name: "CategoryLandingPage",
url: "category",
defaults: new { controller = "Category", action = "Index" }); 

因此它将显示页面中的所有类别.

然后我注册另一个名为CategoryDe​​tails的地图路线

routes.MapRoute(
name: "CategoryDetails", 
url: "category/{categoryName}", 
defaults: new { controller = "Category", action = "Details", categoryName = UrlParameter.Optional });

当有人访问mydomain.com/category/cars时,它将显示与汽车相关的所有产品.

同一个控制器还有另一个操作,如创建,编辑,删除等.

问题是,当我访问mydomain.com/category/create时,它将转到Details操作.它不会转到类别控制器中的创建操作.

我怎么能解决这个问题呢？

Answer 1

两种方式：

使用路由约束来确保 {categoryName} 部分与您的类别之一匹配：

//You will have to make this
var categoryRouteConstraint = new CategoryRouteConstraint();

routes.MapRoute(
name: "CategoryDetails", 
url: "category/{categoryName}", 
constraints: new { categoryName = categoryRouteConstraint }
defaults: new { controller = "Category", action = "Details", categoryName = UrlParameter.Optional });

路线约束示例：

public class CategoryRouteConstraint : IRouteConstraint
    {
        public bool Match(HttpContextBase httpContext, Route route, string parameterName, RouteValueDictionary values, RouteDirection routeDirection)
        {
            if (routeDirection == RouteDirection.UrlGeneration)
                return true;

            if (string.Equals(parameterName, "categoryName", StringComparison.OrdinalIgnoreCase))
            {
                //return true if (string)values[parameterName] == "known category name"
            }

            return false;
        }
    }

或者，先拦截具体动作：

routes.MapRoute(
name: "CategoryDetails", 
url: "category/create", 
defaults: new { controller = "Category", action = "Create", categoryName = UrlParameter.Optional });

routes.MapRoute(
name: "CategoryDetails", 
url: "category/delete", 
defaults: new { controller = "Category", action = "Delete", categoryName = UrlParameter.Optional });

//Do one for Edit, Delete

//CategoryDetails route after
routes.MapRoute(
name: "CategoryDetails", 
url: "category/{categoryName}", 
defaults: new { controller = "Category", action = "Details", categoryName = UrlParameter.Optional });