I have an action that takes an id as a parameter and gets the corresponding item with the help of a web service. The web service's method that returns the item will either return the item with the requested id, or will create a new item (new version of the item) with a new id. So, in the case that a new item is created, the response's header should be updated with the new item's id.
Here's what the route corresponding to that controller action looks like:
public override void RegisterArea(AreaRegistrationContext context)
{
context.MapRoute(
"default",
"MyArea/{Controller}/{action}/{id}",
new { controller = "MyController", action = "Index", id = UrlParameter.Optional }
);
}
So when an user requests the item with the id 12, the request's path will look like:
MyArea/MyController/MyAction/12
Let's say the web service creates a new version of the above item, and its id is 13, I'd like to update the URL accordingly. Here's what my action looks like:
[HttpGet]
public async Task<ActionResult> EditItem(int id)
{
try
{
Item myItem = await _myWS.Channel.GetItemAsync(id);
// If a new version has been created, change the url in order to show the new id
if (myItem.Id != id)
{
Response.StatusCode = 301;
string newUrl = Request.Path;
int lastSlashIndex = newUrl.LastIndexOf("/");
if (lastSlashIndex > 0)
newUrl = newUrl.Substring(0, lastSlashIndex + 1) + myItem.Id;
Response.AddHeader("Location", newUrl);
Response.End();
}
return View("MyView", (ItemViewModel)myItem);
}
catch (Exception ex)
{
throw new ApplicationException(ex.Message);
}
}
I was wondering if there was a better way to reconstruct the URL with the updated id. I also tried reconstructing the URL with the Request.RequestContext.RouteData.Values, but I thought the code was less readable and more complicated, but I don't like the string replace neither, because I think it's less long term friendly.
Bonus
The reason I reconstructed the URL this way instead of a simple redirection it's because I thought the way I was doing avoided a second call to the action, but I was wrong. Is there a "hack" to avoid redirection and to just update the shown URL?
