I am trying to implement a language chooser which is visible on all pages.
My application currently has two routes:
routes.MapRoute(
name: "EventDriven",
url: "{language}/{eventid}/{controller}/{action}/{id}",
defaults: new { language = "en", controller = "Home", action = "Index", id = UrlParameter.Optional }
);
routes.MapRoute(
name: "Default",
url: "{language}/{controller}/{action}/{id}",
defaults: new { language = "en", controller = "Home", action = "Index", id = UrlParameter.Optional }
);
And in my shared _layout.cshtml file I have the following action links:
#Html.ActionLink("English", ViewContext.RouteData.Values["action"].ToString(), new {language="en"})
#Html.ActionLink("Français", ViewContext.RouteData.Values["action"].ToString(), new {language="fr"})
The problem I am encountering is I want the {eventid} route segment preserved, but it's not applicable on every url.
On the home index page http://localhost/MySite/, the two action links are as follows:
English: http://localhost/MySite/
French: http://localhost/MySite/fr
Which is good, but on my interior page http://localhost/MySite/en/2/Donation the action links are:
English: http://localhost/MySite/en/2/Donation
French: http://localhost/MySite/fr/Donation
If I go to http://localhost/MySite/fr/2/Donation then the action links are:
English: http://localhost/MySite/en/Donation
French: http://localhost/MySite/fr/2/Donation
The problem is the change language action link does not contain the eventid 2 information.
How do I make it so both links contain the event and language information (and any other route parameters unforeseeable in the future) without having to program explicitly for them?
What you might end up using is Html.RouteLink()
In this case I'd call it like this (changed to an array if multiple languages are required):
#{
var enRoute = new RouteValueDictionary(ViewContext.RouteData.Values);
enRoute["language"] = "en";
....
}
(remember the new RouteValueDictionary(), you don't want to overwrite the existing one)
and then:
#Html.RouteLink("English", enRoute)
It's a bit nasty and you can't get around it without using the view variable (which I dislike) but you get your whole route for the link.
A inline way to use this method:
#Html.ActionLink("English", this.ViewContext.RouteData.Values["controller"].ToString(), new RouteValueDictionary(ViewContext.RouteData.Values) {["language"] = "en"})
Related
If I have the following MapRoute:
routes.MapRoute(
"Default", // Route name
"{controller}/{action}/{id}", // URL with parameters
new { controller = "Home", action = "Index", id = "" } // Parameter defaults
);
I can have an url like:
blabla.com/Home/Index/123
But what kind of MapRoute do I need to create to be able to do this:
blabla.com/Home/123 or blabla.com/Home/DEADBEEF?
I imagine it involves something along the lines of
"{controller}/{id}/{action}"
Action and id are reversed, and maybe there should be a default action. But how will the MapRoute know which controller should be treated like this?
You probably need something along these lines.
routes.MapRoute(
name: "DefaultRoute",
url: "Home/{action}",
defaults: new { controller = "Home", action = "Index" },
constraints: new { action = "[A-Za-z]*" }
);
or without an action
routes.MapRoute(
name: "DefaultRoute",
url: "Home/{id}",
defaults: new { controller = "Home", action = "Index", id = "" },
constraints: new { id = "[A-Za-z]*" }
);
You will need to make sure that the route name is different than any other routes you have setup and pay attention to the ordering of the routes as other routes that are similar can override each other. In this case make sure you would probably want this before the default route but be aware that it will override it.
As for the not having controller or even the action you can set defaults and do not need them within the route.
As for constraints you can simply add the constraints parameter to the route to set a regular expression for a certain attribute as shown above.
EDIT:
Here are some useful links for more info on routing if you need it.
http://www.dotnet-tricks.com/Tutorial/mvc/HXHK010113-Routing-in-Asp.Net-MVC-with-example.html
http://weblogs.asp.net/scottgu/archive/2007/12/03/asp-net-mvc-framework-part-2-url-routing.aspx
Advanced ASP Routing tutorials and examples
You can add a route like this:
routes.MapRoute(
"CustomRoute",
"Home/{id}",
new { controller = "Home", action = "Index", id = "" });
Make sure you place it above the default route. However this route will block all the other actions in HomeController. Since we don't have a constraint on id parameter, the framework can't possibly know if you are referring to an action or an id in your URL. Since this route comes first, it will map it to id parameter.
I've got the following routes:
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute(null,"Conference/{shortName}/Submission/{submission}/{action}", new { controller = "Conference", action = "Show" });
routes.MapRoute(null,"Conference/{shortName}/{action}",new { controller = "Conference", action = "Index" });
routes.MapRoute("Default", "{controller}/{action}/{id}", new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);
The following (hopefully obvious) links which are all working:
/Conference/testconf
/Conference/testconf/ShowSubmissions
/Conference/testconf/Submission/firstSub
/Conference/testconf/Submission/firstSub/EditSubmission
When I'm now in Submission/firstSub and create a ActionLink like this
#Html.ActionLink("Show Submissions", "ShowSubmissions", "Conference", new { shortName = Model.confereceShortName },null)
it creates the following Link
/Conference/testconf/Submission/firstSub/ShowSubmissions
How can i let the actionlink forget about Submission/firstSub without hardcoding it there?
Where do you have a placeholder for {controller}?
The default route should look like the following sample.
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute(
"Default", // Route name
"{controller}/{action}/{*id}", // URL with parameters
new {controller = "Home", action = "Index", id = UrlParameter.Optional} // Parameter defaults
);
Also try to remove the /Submission/ part in your first route.
Links for posts on custom route creation and ordering:
1) Creating Custom Routes (C#)
2) Custom routing for ASP .NET MVC
3) official source from asp.net mvc
Sometimes searching for 30min isn't enough, you gotta search 2h...
ASP.NET MVC 2 RC2 Routing - How to clear low-level values when using ActionLink to refer to a higher level?
Routlink or delete the values in the constraints.
For me Routelink does the job.
Although Thanks
ElYusubov & Aleksey
Currently I'am working on an MVC project in which I try to get a kind of dynamic routing working. My idea would be that i left the original route in the global.asax.cs, so this one will take care of every controller I make. For example the Contact and Account controllers.
Above controllers will have url's like
/Contact/
/Account/Logoff/ etc.
The second route I want to add is the one that is a kind of default route when there are no controllers found. In that case I assume this will be a route to a page or pagedetails.
Url's for example will be :
/BBQ/
/BBQ/Accesoires/
I have three routes added in the global.asax.cs which I think are correct. (Also in the correct order). Below I have added the routes:
routes.MapRoute(
"DefaultRoute", // Route name
"{controller}/{action}/{id}", // URL with parameters
new { controller = "Page", action = "Index", id = UrlParameter.Optional });
routes.MapRoute(
"DefaultPageRoute",
"{category}",
new { controller = "Page", action = "Index", category = UrlParameter.Optional });
routes.MapRoute(
"SecondLevelPageRoute",
"{category}/{subCategory}",
new { controller = "Page", action = "PageDetails", category = UrlParameter.Optional, subCategory = UrlParameter.Optional });
with this setup the calls to the controllers work fine, but to the pages like /BBQ/ it gives below error:
Server Error in '/' Application.
The resource cannot be found.
If I comment the first route and go the the /BBQ/ url it works like a charm. What am I overseeing in this routetable?
You put the default route first, so it is trying to go to a route defined by {controller = "BBQ", Action = "Index" }
That route should be the very last route. However, you need more detail in your routes. Just having a category route will cause problems.
For example, if this route is first
routes.MapRoute(
"DefaultPageRoute",
"{category}",
new { controller = "Page", action = "Index", category = UrlParameter.Optional });
Then a call to the URL /Contact/ will assume that you want to go to Page/Index/Contact not /Contact/Index/{id}. I would use a more specific route that signifies that you are browsing a category like:
routes.MapRoute(
"DefaultPageRoute",
"Category/{category}",
new { controller = "Page", action = "Index", category = UrlParameter.Optional });
So you will need to use a url www.mysite.com/Category/BBQ to view what you want, but I don't think that's all bad.
I need to access a parameter without name.
Ex: I have a controller test, I want to get "data" in mysite.com/test/data. Without calling the action data.
I know how to do that passing it though Index action.
public ActionResult Index(string id)
That way I'd only need to type mysite.com/test/Index/data to get "data", but I don't want to have to type Index.
Does anyone know how to do it?
EDIT:
Thanks a lot to #andyc!
AndyC I used what you said and created a test. It worked =D
Now I can type mysite.com/something and if something is not an controller it redirects to my profile page.
This is what is working for me
routes.MapRoute(
"Profile",
"{id}",
new { Controller = "Profile", action = "Index", id = UrlParameter.Optional }
);
routes.MapRoute(
"Default", // Route name
"{controller}/{action}/{id}", // URL with parameters
new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults
);
Setup a custom route
In your global.asax file, put (Inside the RegisterRoutes method):
routes.MapRoute(
"MyShortRoute",
"view/{id}",
new { Controller = "test", action = "Index" }
);
The first parameter is a name, the second is the URL format and the last parameter is the default values (in this case if you leave id empty it'll default to id 0.
Notice that I don't use test/{id} as this would also match test/Edit, where edit is an action that you do not want passed as a parameter (I can't think of another way to avoid this, especially if you're using strings instead of ints for your parameters).
Remember to order your routes appropriately in your global.asax file. Put more specific routes before less specific routes. When the system is searching for a route to take, it does not attempt to find the most specific match but instead it starts from the top, and uses the first match it finds.
Therefore, this is bad:
routes.MapRoute(
"Default",
"{controller}/{action}/{id}",
new { controller = "test", action = "Index", id = UrlParameter.Optional }
);
routes.MapRoute(
"Specific",
"test/{id}",
new { controller = "test", action = "Index", id = 0 }
);
In this example, if you browse to test/somevalue it will match the FIRST entry, which is not what you want, giving you the testcontroller and the somevalue action.
(As your adding a more specific route, you will want it near the top, and definitely before your default).
How do I generate friendly URLs within the ASP.NET MVC Framework? For example, we've got a URL that looks like this:
http://site/catalogue/BrowseByStyleLevel/1
The 1 is Id of the study level (Higher in this case) to browse, but I'l like to reformat the URL in the same way StackOverflow does it.
For example, these two URLs will take you to the same place:
https://stackoverflow.com/questions/119323/nested-for-loops-in-different-languages
https://stackoverflow.com/questions/119323/
EDIT: The friendly part of the url is referred to as a slug.
There are two steps to solve this problem. First, create a new route or change the default route to accept an additional parameter:
routes.MapRoute( "Default", // Route name
"{controller}/{action}/{id}/{ignoreThisBit}",
new { controller = "Home",
action = "Index",
id = "",
ignoreThisBit = ""} // Parameter defaults )
Now you can type whatever you want to at the end of your URI and the application will ignore it.
When you render the links, you need to add the "friendly" text:
<%= Html.ActionLink("Link text", "ActionName", "ControllerName",
new { id = 1234, ignoreThisBit="friendly-text-here" });
This is how I have implemented the slug URL on my application.
Note: The default Maproute should not be changed and also the routes are processed in the order in which they're added to the route list.
routes.MapRoute(
"Default", // Route name
"{controller}/{action}/{id}", // URL with parameters
new { controller = "Home",
action = "Index",
id = UrlParameter.Optional
} // Parameter defaults
);
routes.MapRoute("Place", "{controller}/{action}/{id}/{slug}", new { controller = "Place", action = "Details", id = UrlParameter.Optional,slug="" });
you have a route on the global.asax
routes.MapRoute(
"Default", // Route name
"{controller}/{action}/{id}", // URL with parameters
new { controller = "Home", action = "Index", id = ""}
// Parameter defaults )
you can define your own route like :
controller is the cs class inside the the controllers folder.
you can define your id - with the name you choose.
the system will pass the value to your actionResult method.
you can read more about this step here : http://www.asp.net/learn/mvc/tutorial-05-cs.aspx