c# - ASP.NET MVC 3 - Edge case with Routing in Area -

i have page user's can "ask question" against product.

the route is:

context.maproute(                 "q&a - ask - product",                 "{someproducturi}/questions/ask",                 new { controller = "questions", action = "ask" }             ); 

which matches:

/car/questions/ask

/phone/questions/ask

here's action:

public class questionscontroller : controller {     public viewresult ask(string someproducturi)     {       // ...     } } 

now, problem is, need allow user select product on page itself, e.g no product pre-chosen in uri.

because controller in area, "default url" this:

/myarea/questions/ask

so what's happening is, when action, "someproducturi" set "myarea", causing sorts of grief.

i want re-use same action/view both sets of url's, don't want route value set "myarea" when it's default url.

hope makes sense - ideas?

do need seperate route? can add route constraint "someproducturi" can't "myarea", doesn't match route , falls default?

i have many routes, didn't want add edge case.

so ended using route constraint:

public class notequaltoareaname : irouteconstraint {    public bool match(httpcontextbase httpcontext, route route, string parametername, routevaluedictionary values, routedirection routedirection)    {       return string.compare(values[parametername].tostring(), route.datatokens["area"].tostring(), true) != 0;    }     } 

pretty simple, , generic - can re-use anytime come across type of edge case.