Get Relative Path from Route Name

Question

When a path is named...

[Route("api/[controller]/{id}/Existing", Name = "ExistingOrdersLink")]
public class OrdersController : Controller {...}

...it is easy to create an absolute path using its name:

var address = Url.Link("ExistingOrdersLink", new { id = 22 });

However, I need the ability to generate a relative path from a Route name. So I write code like this:

//Is there a built-in mechanism for this?
string partial = new Uri(Url.Link("ExistingOrdersLink", new { id = id })).PathAndQuery;

The above works but, in ASP.NET Core, is there a more direct way to get the same result?

Context

Why do I need this? Some of the controllers I make are actually generic:

[Route("api/Subscribers/{id}/[controller]", "SubscriberLink")]
[Route("api/Organization/{id}/[controller]", "OrganizationLink")]
public class OrdersController<T> : Controller where T : IOrder
{
    private ICommand<Order<T>> createOrder;

    protected OrdersController(ICommand<Order<T>> createOrder)
    {
        this.createOrder = createOrder;
    }

    [HttpPost("{otype}")]
    public async Task<IActionResult> Create(
        Guid id,
        [FromBody] Order<T> order)
    {
        order.CustomerOrderId = Guid.NewGuid();
        createOrder.Handle(order);

        string[] segs = Request.Path.Value.Split(new char[] { '/' },StringSplitOptions.RemoveEmptyEntries);

        //This will become either "SubscriberLink" or "OrganizationLink"
        string route = $"{segs[1]}Link";

        //Is there a built-in mechanism for this?
        string partial = new Uri(Url.Link(route, new { id = id })).PathAndQuery;

        partial = $"{partial}/{order.CustomerOrderId}";
        CreatedResult reply = Created(partial, null);

        return reply;
    }
}

tmg · Accepted Answer · 2016-04-18 21:03:11Z

1

I think you are looking for Url.RouteUrl Example:

Url.RouteUrl("ExistingOrdersLink", new { id = 22});

answered Apr 18, 2016 at 21:03

tmg

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1 Comment

Brent Arias Over a year ago

Your answer is correct, although the XML documentation for that function is incorrect. It states "Generates a fully qualified or absolute URL...". I would not have asked this question if the documentation had been correct.

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