c# - 实现博客条目链接

Question

我正在开发一个像博客引擎这样的应用程序。在主页的视图中，我有一个链接

<a href="/Blog/BlogEntry/2013/05/22/title for this blog entry" />

当用户单击该链接时，它将来到博客控制器并在那里运行 BlogEntry 操作

public class BlogController : Controller {
   public ActionResult BlogEntry(string title, DateTime createdDate) {
       // doing something
       var viewModel = something here for build the view model

       return View(viewModel);
   }
}

问题是我该怎么做？

Answer 1

这样做，因为所有参数都将从 URL 映射。使用操作过滤器以您想要的方式映射数据。我没有完全测试过代码，但它会给出票价的想法。在您的操作上方添加此属性。

   public ActionResult BlogEntry(int year, int month , int day , string title)

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
     using System.Web.Mvc;

    namespace OurAttributes
    {
     public class PopulateTitleDandDateAttribute : ActionFilterAttribute
     {
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {

                string[] url = filterContext.HttpContext.Request.Uri.split('/');
                DateTime d = new Date(url[2],url[3],url[4]);
                if (filterContext.ActionParameters.ContainsKey("createdDate"))
                {
                    filterContext.ActionParameters["createdDate"] = d;
                }

                if (filterContext.ActionParameters.ContainsKey("title"))
                {
                    filterContext.ActionParameters["title"] = url[5] ;
                }
                base.OnActionExecuting(filterContext);


    }
  }
 }

Answer 2

作为 Devesh 的建议，我在他的代码中修改了一些东西，并且它有效

• 控制器：

  [HttpGet]
  [PopulateTitleDandDate]
  public ActionResult BlogEntry(string title, DateTime createdDate)
  {
      var viewModel = new BlogEntryModel
          {
              Tittle = title,
              CreatedDate = createdDate
          };
  
      return View(viewModel);
  }
  

• PopulateTitleDandDateAttribute

  public class PopulateTitleDandDateAttribute : ActionFilterAttribute
  {
      public override void OnActionExecuting(ActionExecutingContext filterContext)
      {
          var url = filterContext.HttpContext.Request.RawUrl.Split('/');
          if (url.Length >= 7) // TODO: it is actually not good here
          {
              var d = new DateTime(url[3].ConvertToInteger(), url[4].ConvertToInteger(), url[5].ConvertToInteger());
              if (filterContext.ActionParameters.ContainsKey("createdDate"))
              {
                  filterContext.ActionParameters["createdDate"] = d;
              }
  
              if (filterContext.ActionParameters.ContainsKey("title"))
              {
                  filterContext.ActionParameters["title"] = url[6];
              }
          }
  
          base.OnActionExecuting(filterContext);
      }
  }
  

• BlogEntry.cshtml

  @model SampleApplication.Controllers.BlogEntryModel
  
  <h2>@Html.Raw(Model.Tittle) (@Html.Raw(Model.CreatedDate))</h2>
  

再次感谢德维什。