Asp.net MVC5 route parameter issue

Question

I am trying to create URLs in asp.net MVC5. The behavior I'm look for is below:

http://www.example.com/es/faqs ----> when language is Spanish
http://www.example.com/faqs    ----> when language is english

My route for this URL:

routes.MapRoute(
        name: "FAQs",
        url: "{lang}/FAQs",
        defaults: new { controller = "StaticPages", action = "FAQs", lang= UrlParameter.Optional }
    );

This URL renders find in Spanish --> http://www.example.com/es/faqs

But my issue is that this url does not function correctly --> http://www.example.com/faqs

When I attempt to visit this URL I get a page not found error.

In my route, I am trying to make lang(Language code) optional, why doesn't my route work when have no language code in the URL.

Optional parameters are suppose to be the last thing in the route template. It wont work when there is anything after the optional parameter. — Nkosi
– Nkosi, Commented Jun 9, 2016 at 11:08
You might want to take a look at this answer for how to manage the default language. It is also possible to use a decorator pattern on the Route class and/or use customized attribute routing so you don't need to duplicate every route. — NightOwl888
– NightOwl888, Commented Jun 9, 2016 at 16:32

Nkosi · Accepted Answer · 2016-06-09 11:12:19Z

1

Optional parameters are suppose to be the last thing in the route template. It wont work when there is anything after the optional parameter. You are goin to have to create two templates to allow for the two formats

routes.MapRoute(
        name: "LocalizedFAQs",
        url: "{lang}/FAQs",
        defaults: new { controller = "StaticPages", action = "FAQs", lang = "en" }
);

routes.MapRoute(
        name: "DefaultFAQs",
        url: "FAQs",
        defaults: new { controller = "StaticPages", action = "FAQs", lang = "en" }
);

answered Jun 9, 2016 at 11:12

Nkosi

249k38 gold badges472 silver badges506 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Rishu Sharma Over a year ago

@Nikosi, so there is no way to achieve this without duplicate routes?

Nkosi Over a year ago

Not to my knowledge. From a lot of the examples I have seen once you have an optional parameter in the route you can't have anything after it. Take a look at this similar Q&A - stackoverflow.com/a/32839796/5233410

Collectives™ on Stack Overflow

Asp.net MVC5 route parameter issue

1 Answer 1

2 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related