如何在ASP.NET Core中使用錨標籤幫助呈現日期部分段

Question

我試圖讓一個設置允許在文章的兩種url格式之間進行選擇，一種是日期段，一種是隻有蛞蝓。我希望用戶能夠爲他們的博客選擇這些設置中的任何一個，並且它不應該要求啓動代碼中的更改來回切換。實際上，我試圖支持多租戶博客，因此每個博客都可以擁有自己的url格式首選項。

我在Startup.cs定義下列途徑

routes.MapRoute(
name: "blogcategory", 
template: "blog/category/{category=''}/{pagenumber=1}" 
, defaults: new { controller = "Blog", action = "Category" } 
); 

routes.MapRoute(
"blogarchive", 
"blog/{year}/{month}/{day}", 
new { controller = "Blog", action = "Archive", month = "00", day = "00" }, 
new { year = @"\d{4}", month = @"\d{2}", day = @"\d{2}" } 
); 

routes.MapRoute(
"postwithdate", 
"blog/{year}/{month}/{day}/{slug}", 
new { controller = "Blog", action = "PostWithDate" }, 
new { year = @"\d{4}", month = @"\d{2}", day = @"\d{2}" } 
); 

routes.MapRoute(
name: "blogpost", 
template: "blog/{slug}" 
, defaults: new { controller = "Blog", action = "Post" } 
); 

routes.MapRoute(
name: "blogindex", 
template: "blog/" 
, defaults: new { controller = "Blog", action = "Index" } 
); 

routes.MapRoute(
name: "pageindex", 
template: "{slug=none}" 
, defaults: new { controller = "Page", action = "Index" } 
); 

routes.MapRoute(
name: "def", 
template: "{controller}/{action}" 
); 
routes.MapRoute(
"postwithdate", 
"blog/{year}/{month}/{day}/{slug}", 
new { controller = "Blog", action = "PostWithDate" }, 
new { year = @"\d{4}", month = @"\d{2}", day = @"\d{2}" } 
); 

我的博客控制器具有相關郵路

[HttpGet] 
[AllowAnonymous] 
public async Task<IActionResult> Post(string slug, string mode = "") 
{ 
    return await Post(0, 0, 0, slug, mode); 
} 

[HttpGet] 
[AllowAnonymous] 
[ActionName("PostWithDate")] 
public async Task<IActionResult> Post(int year , int month, int day, string slug, string mode = "") 
{ 
    ... 
} 

這些方法如果我手動導航到

http://localhost:60000/blog/2016/03/07/squirrel 

該頁面按預期工作

在我看來，我呈現這樣的鏈接後與錨標記輔助

@if (Model.ProjectSettings.IncludePubDateInPostUrls) 
{ 
    <a asp-controller="Blog" asp-action="Post" 
     asp-route-year="@Model.TmpPost.PubDate.Year" 
     asp-route-month="@Model.TmpPost.PubDate.Month" 
     asp-route-day="@Model.TmpPost.PubDate.Day" 
     asp-route-slug="@Model.TmpPost.Slug" 
     itemprop="url">@Model.TmpPost.Title</a> 
} 
else 
{ 
    <a asp-controller="Blog" asp-action="Post" asp-route-slug="@Model.TmpPost.Slug" itemprop="url">@Model.TmpPost.Title</a> 
} 

但是當我將其配置爲使用pubdate的url中它呈現這樣的鏈接：

http://localhost:60000/blog/squirrel?year=2016&month=3&day=7 

該網址也適用，但我怎麼能讓它呈現這樣的：？

http://localhost:60000/blog/2016/03/07/squirrel 

我嘗試也使用命名的路由與taghelper代替控制器和行動，像這樣：

<a asp-route="postwithdate" 
     asp-route-year="@Model.TmpPost.PubDate.Year" 
     asp-route-month="@Model.TmpPost.PubDate.Month" 
     asp-route-day="@Model.TmpPost.PubDate.Day" 
     asp-route-slug="@Model.TmpPost.Slug" 
     itemprop="url">@Model.TmpPost.Title</a> 

而是一個呈現完全錯誤的，甚至沒有蛞蝓是這樣的：

http://localhost:60000/blog 

我想讓tagHelper呈現這樣的網址：

http://localhost:60000/blog/2016/03/07/squirrel 

任何人都可以看到我在做什麼錯或不正確嗎？或者我需要爲此實現自定義錨標籤幫助器嗎？

Answer 1

好吧，我找到了一個解決方案使用指定的路線，只需要確保的月份和日期得到格式化爲2個位數，這樣做，它現在呈現爲我的日期段想後

<a asp-route="postwithdate" 
    asp-route-year="@Model.TmpPost.PubDate.Year" 
    asp-route-month="@Model.TmpPost.PubDate.Month.ToString("00")" 
    asp-route-day="@Model.TmpPost.PubDate.Day.ToString("00")" 
    asp-route-slug="@Model.TmpPost.Slug" 
    itemprop="url">@Model.TmpPost.Title</a>