How can my route use optional parameters in the middle of the URL using ASP MVC3?

Question

I would like my URLs to use the convention:

/{controller}/{id}/{action}

rather than

/{controller}/{action}/{id}

I tried setting up a route as follows:

routes.MapRoute(
            "Campaign",
            "{controller}/{action}/{id}",
            new { controller = "Campaign", action = "Index", id = UrlParameter.Optional } 
        );

But this doesn't work because I am unable to make the id parameter optional.

The following URLs do work:

/campaign/1234/dashboard
/campaign/1234/edit
/campaign/1234/delete

But these URLs do not:

/campaign/create
/campaign/indexempty

MVC just calls Index for both. What am I doing wrong?

John Allers · Accepted Answer · 2011-11-29 17:40:30Z

7

I think you probably need two separate routes for this.

routes.MapRoute(
            "CampaignDetail",
            "{controller}/{id}/{action}",
            new { controller = "Campaign", action = "Index" } 
        );

routes.MapRoute(
            "Campaign",
            "{controller}/{action}",
            new { controller = "Campaign", action = "Index" } 
        );

edited Nov 29, 2011 at 17:40

answered Nov 29, 2011 at 16:32

John Allers

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3 Comments

parleer Over a year ago

That worked! Slight modification to your code--I named the first route "CampaignDetail" so that it wouldn't conflict with the second route.

John Allers Over a year ago

Oh, I missed that. I'm glad it helped.

parleer Over a year ago

One more thing--Having {controller}/{id}/{action} interfered with my default route. I was able to fix this by explicitly using the word campaign in my url. i.e. campaign/{id}/{action}.

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