MVC 2 AreaRegistration Routes Order - asp.net-mvc

I noticed that in MVC 2 Preview 2, AreaRegistration is loading the routes for each area in an arbitrary order. Is there a good way to get one before the other?
For example, I have two areas - "Site" and "Admin". Both have a "Blog" controller.
I would like the following:
/admin/ --> go to Admin's Blog controller
/ --> go to Site's Blog controller.
The problem is that it is loading the site's route first, so it is matching {controller}/{action}/{id} instead of admin/{controller}/{action}/{id} when I go to the url "/admin/". I then get a 404, because there is no Admin controller in the "Site" area.
Both areas default to the "Blog" controller. I realize I could simply put site/{controller}/... as the url, but I would rather have it at the root if possible. I also tried keeping the default route in the global RegisterRoutes function, however, it is then not sent to the "Sites" area.
Thanks in advance!

Aside from what Haacked said, it is very much possible to order area registrations (and thus their routes). All you have to do is register each area manually, in whatever order you want. It's not as sleek as calling RegisterAllAreas() but it's definitely doable.
protected void Application_Start() {
var area1reg = new Area1AreaRegistration();
var area1context = new AreaRegistrationContext(area1reg.AreaName, RouteTable.Routes);
area1reg.RegisterArea(area1context);
var area2reg = new Area2AreaRegistration();
var area2context = new AreaRegistrationContext(area2reg.AreaName, RouteTable.Routes);
area2reg.RegisterArea(area2context);
var area3reg = new Area3AreaRegistration();
var area3context = new AreaRegistrationContext(area3reg.AreaName, RouteTable.Routes);
area3reg.RegisterArea(area3context);
}
Another option is to take the code for RegisterAllAreas(), copy it into your own app, and build your own mechanism for determining the order. It is quite a bit of code to copy if you want all the fancy caching logic that the built-in method does, but your app might not even need that.

Currently it's not possible to order areas. However, I think it makes sense to try and make each area as independent from other areas as possible so the order doesn't matter.
For example, instead of having the default {controller}/{action}/{id} route, maybe replace that with specific routes for each controller. Or add a constraint to that default route.
We are mulling over options to allow ordering, but we don't want to overcomplicate the feature.

I make this solution:
AreaUtils.cs
using System;
using System.Web.Mvc;
using System.Web.Routing;
namespace SledgeHammer.Mvc.Site
{
public static class Utils
{
public static void RegisterArea<T>(RouteCollection routes,
object state) where T : AreaRegistration
{
AreaRegistration registration =
(AreaRegistration)Activator.CreateInstance(typeof(T));
AreaRegistrationContext context =
new AreaRegistrationContext(registration.AreaName, routes, state);
string tNamespace = registration.GetType().Namespace;
if (tNamespace != null)
{
context.Namespaces.Add(tNamespace + ".*");
}
registration.RegisterArea(context);
}
}
}
In global.asax:
Utils.RegisterArea<SystemAreaRegistration>(RouteTable.Routes, null);
Utils.RegisterArea<ClientSitesAreaRegistration>(RouteTable.Routes, null);
//AreaRegistration.RegisterAllAreas(); do not dublicate register areas
No requred changes to generated area registration code.
I also use custom constrant in routes to filter routes by type of domain in request (system domain or user site).
This is my area registrations as example:
namespace SledgeHammer.MVC.Site.Areas.System
{
public class SystemAreaRegistration : AreaRegistration
{
public override string AreaName
{
get { return "System"; }
}
public override void RegisterArea(AreaRegistrationContext context)
{
context.MapRoute(
"System_Feedback",
"Feedback",
new { controller = "Feedback", action = "Index" }
);
context.MapRoute(
"System_Information",
"Information/{action}/{id}",
new { controller = "Information", action = "Index", id = UrlParameter.Optional }
);
}
}
}
namespace SledgeHammer.MVC.Site.Areas.ClientSites
{
public class ClientSitesAreaRegistration : AreaRegistration
{
public override string AreaName
{
get { return "ClientSites"; }
}
public override void RegisterArea(AreaRegistrationContext context)
{
context.MapRoute(
"ClientSites_default",
"{controller}/{action}/{id}",
new { controller = "Site", action = "Index", id = UrlParameter.Optional },
new { Host = new SiteInGroups("clients") }
);
}
}
}

For reference,
In MVC3 (don't know about MVC2) when you just want to map root to a specific area/controller you could simply use a global route.
Just remember to specify the namespace/area.
routes.MapRoute(
"CatchRoot", "",
new { controller = "SITEBLOG-CONTROLLER-NAME", action = "Index"}
).DataTokens.Add("area", "SITE-AREA-NAME");

Related

Umbraco MVC-like routing

I currently have a controller that needs to process parameters passed to umbraco's actions. What I did was adding a controller for my Document Type:
public class MyDocumentTypeController : RenderMvcController
{
public ActionResult SignUp(RenderModel model, [Bind(Prefix="rc")] string myArgument = null)
{
// some logic
return View(model);
}
}
Now I'm able to pass arguments to that action. Assuming my content of MyDocumentType is available under address http://mypage/mydocumenttype, so I can pass arguments to my action like this: http://mypage/mydocumenttype/signup?rc=1234ef. What I dislike is:
I cannot put constraints on the argument
I can't make use of MVC-like paths, like: http://mypage/mydocumenttype/signup/1234ef
To achieve it I added routing:
public static void RegisterRoutes(RouteCollection routes)
{
routes.MapUmbracoRoute(
"MyDocumentType",
"MyDocumentType/{action}/{myArgument}",
new { controller = "MyDocumentType", action = "Index", myArgument = UrlParameter.Optional },
/* WHAT GOES HERE? */,
new { myArgument = #"^[a-zA-Z0-9]{5}$" });
}
However, if I create plain-old-vanila MVC routing I loose Umbraco's context which I need. If I use MapUmbracoRoute I don't know what IRouteHandler should be passed. Any ideas?

MVC route constraint custom attribute

I'd like to setup a custom route constraint that would allow me to decorate a controller with an attribute so that I don't have to pass in string to the route and remember to update it with new controller names.
I thought I could setup use the IRouteConstraint but I can't seem to get the attribute. Perhaps I'm just missing something obvious here.
routes.MapRoute("test",
"foo/{controller}/{action}/{id}",
new { controller = "Home", action = "Index", id = UrlParameter.Optional },
new { controller = new TestConstraint()}
);
routes.MapRoute("Default", "{controller}/{action}/{id}",
new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);
public class TestConstraint : IRouteConstraint
{
public bool Match(HttpContextBase httpContext, Route route, string parameterName,
RouteValueDictionary values,
RouteDirection routeDirection)
{
return false;
}
}
[AttributeUsage(AttributeTargets.Class)]
public class CustomConstraintControllerAttribute : Attribute
{
}
[CustomConstraintController]
public class TestController : Controller
{
public ActionResult Index()
{
return View();
}
}
Edit:
Current Method:
routes.MapSubdomainRoute("Store",
"{store}/{controller}/{action}/{id}",
new {controller = "Home", action = "Index", id = UrlParameter.Optional},
new {controller = "StoreHome|Contacts|..." }
);
This route configuration ensures that a url must match subdomain.test.com/GiggleInc/Contacts or subdomain.test.com/GiggleInc/StoreHome.
subdomain.test.com/GiggleInc/StoreHome
MapSubdomainRoute /{store} /{controller}/{action}/{id}
This method requires that each controller that should be used this way must be added to the controller constraint.
As I mentioned in the comments, I want to replace the hard coded strings for an attribute or something similar.
First, thank you for this sweet line of code I didn't know was possible:
constraints: new { controller = "StoreHome|Contacts" }
I didn't know I could filter my MapRoute to a list of Controllers so easily.
Second, you don't need to implement a custom IRouteConstraint for this.
MVC offers the Attribute-Routing you are looking for.
You may even include Default/Optional Values, just like in your MapRoute.
Decorate your Controller Class like so:
[RoutePrefix("{store}/Test")]
[Route("{action=Index}/{id?}")]//Without this, you need to define "[Route]" above every Action-Method.
public class TestController : Controller
{
public ActionResult Index(string store)//Adding "string store" is optional.
{
return View();
}
}
That's it.
Remember to add the "store" Parameter in all your Actions under each Controller (but it is not Required).
Note:
If you use Attributes instead of MapRoute, then you will not be able to hit the Controller without the "store" Prefix.
With the Custom and Default MapRoutes, you could have accessed your controller either way.
By decorating your Controller with these Attributes, you now force it to only use this exact path.
This may be what you want, but if you start IIS Express from Visual Studio on one of your Views, it will not find it, because Visual Studio doesn't know to add the RoutePrefix for you.
See this link for more information about Attribute-Routing:
https://blogs.msdn.microsoft.com/webdev/2013/10/17/attribute-routing-in-asp-net-mvc-5/
Try this...
public class TestRouteAttribute : RouteFactoryAttribute
{
public TestRouteAttribute(string template) : base(template) { }
public override RouteValueDictionary Constraints
{
get
{
var constraints = new RouteValueDictionary();
constraints.Add("TestConstraint", new TestConstraint());
return constraints;
}
}
}
Then you should be able to decorate your action methods using [TestRoute]
By the way, would love to know how to accomplish this in asp.net core if anyone knows.

ASP.NET MVC - Attribute Routing not finding area view

I've been searching for answers for this everywhere, but I can't seem to find any. I basically have an MVC application setup and I am using the built in AttributeRouting for my routes.
The folder structure looks like this;
Models
Views
Controllers
Areas
Member
MemberAreaRegistration.cs
Controllers
HomeController.cs
Views
Home
Account.cshtml
And then I wire up my routes in the global.asax like this;
public class Application : System.Web.HttpApplication {
protected void Application_Start(){
AreaRegistration.RegisterAllAreas();
// other web optimization stuff
RouteConfig.RegisterRoutes(RouteTable.Routes);
}
}
So then, MemberAreaRegistration.cs is simple.
namespace App.Web.Areas.Member {
public class MemberAreaRegistration: AreaRegistration {
public override string AreaName { get { return "Member"; } }
}
public override void RegisterArea( AreaRegistrationContext context){ }
}
And I try to wire it using the attributes...
/areas/member/controllers/homecontroller.cs
// ...
[Route("member/account")]
public ActionResult Account() { return View(); }
// ...
The problem is that this finds the route, but it cannot find the view. I get the following error;
The view 'Account' or its master was not found or no view engine
supports the searched locations. The following locations were
searched:
~/Views/Home/Account.aspx
~/Views/Home/Account.ascx
~/Views/Shared/Account.aspx
~/Views/Shared/Account.ascx
~/Views/Home/Account.cshtml
~/Views/Home/Account.vbhtml
~/Views/Shared/Account.cshtml
~/Views/Shared/Account.vbhtml
By all accounts, this should work fine - and if not, I expect the ~/area to at least be in the path it is trying to search. Do I have to wire something additional up to make this function?
I am using ASP.NET MVC 5.0
If I hardcode the absolute path of the view, it works. Obviously this is not a good situation though. I'd prefer it to find the view out of convention. But if I type return View("~/areas/member/views/home/account.cshtml"); I do get the view back - so I know it can access to file and that it is correct.
Here is my RouteConfig.cs per request
RouteConfig.cs
public class RouteConfig {
public static void RegisterRoutes(RouteCollection routes) {
// mvc attribute routing allows us to supersede normal routing mechanisms and
// declare our routes a bit more verbosely
routes.MapMvcAttributeRoutes();
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute(
name: "default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional },
namespaces: new[] { "App.Web.Controllers" }
);
}
}
That's because, once you are defining your route as an action's attribute, ASP.NET MVC doesn't know which area it is in, hence it doesn't know where to look for Views.
In the Controller the Account action is in, try to explicitly specify a RouteArea attribute.
I'm writing this off the top of my head, but it should look like:
[RouteArea("Member")]
[RoutePrefix("member")]
public class HomeController: Controller {
[Route("account")]
public ActionResult Account() { return View(); }
}
or, alternatively:
[RouteArea("Member")]
public class HomeController: Controller {
[Route("member/account")]
public ActionResult Account() { return View(); }
}

Using MVC 4 areas at custom path

I'm trying to use areas at a custom path, and I'm having issues. I've been googeling a bunch, but havent found a solution.
My project is a EPiServer CMS project (which shouldn't have any effect I think, just wanna mention it, in case it does)
My structure is
Root
CompanyName
Areas
Commerce
Controllers
Models
Views
Cms
Controllers
HomePageController
Models
Views
HomePage
Index.cshtml
So I have a layer more to the tree then 'normal' which is the 'CompanyName'
I have this in global.asax.cs
protected void Application_Start()
{
ViewEngines.Engines.Add(new AreaTemplateViewEngineDynamic());
AreaRegistration.RegisterAllAreas();
...
}
I have a Custom RazorEngine (Could have just added more paths to the default, but have this solution as of now)
public class AreaTemplateViewEngineDynamic : RazorViewEngine
{
public AreaTemplateViewEngineDynamic()
{
this.PartialViewLocationFormats = this.ViewLocationFormats = this.MasterLocationFormats =
new string[]
{
"~/CompanyName/Views/{1}/{0}.cshtml", "~/CompanyName/Views/Shared/{0}.cshtml"
};
this.AreaMasterLocationFormats = this.AreaPartialViewLocationFormats = this.AreaViewLocationFormats =
new string[]
{
"~/CompanyName/Areas/{2}/Views/{1}/{0}.cshtml", "~/CompanyName/Areas/{2}/Views/Shared/{0}.cshtml"
};
}
}
Adding this area registration
public class CmsAreaRegistration: AreaRegistration
{
public override string AreaName
{
get { return "Commerce"; }
}
public override void RegisterArea(AreaRegistrationContext context)
{
context.MapRoute(
"Cms_default",
"Cms/{controller}/{action}/{id}",
new { action = "Index", id = UrlParameter.Optional },
namespaces: new[] { "Root.CompanyName.Areas.Cms.Controllers" }
);
}
}
When I try to load the page, it seems it doesnt look at the Area paths, only the non-area paths.
The view 'index' or its master was not found or no view engine supports the searched locations. The following locations were searched:
~/Views/HomePage/index.aspx
~/Views/HomePage/index.ascx
~/Views/Shared/index.aspx
~/Views/Shared/index.ascx
~/Views/HomePage/index.cshtml
~/Views/HomePage/index.vbhtml
~/Views/Shared/index.cshtml
~/Views/Shared/index.vbhtml
~/CompanyName/Views/HomePage/index.cshtml
~/CompanyName/Views/Shared/index.cshtml
The path I want it to find is
~/CompanyName/Areas/Cms/Views/HomePage/index.cshtml
Also if I had to use
#{Html.RenderAction("MiniCart", "Cart", new { area = "Commerce"} );}
I would expect it to finde
~/CompanyName/Areas/Commerce/Views/Cart/MiniCart.cshtml
You are only setting the location for the AreaMasterLocation when you should also set the following locations:
AreaPartialViewLocationFormats
AreaViewLocationFormats
Find the following class in the object browser: VirtualPathProviderViewEngine for more properties and methods.
I wrote my own RazorViewEngine, where I added some custom codes to finding paths.
Could just use the URL, because the URL was controlled by the CMS, so the URL didnt represent the MVC path.

Single Controller with Multiple Views

I am trying to create an MVC application with multiple view, but using a single controller. I started by creating a second route with another property that I could use to redirect to a second folder.
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute(
"xml", // Route name
"xml/{controller}/{action}/{id}", // URL with parameters
new { mode = "xml", controller = "Home", action = "Index", id = "" } // Parameter defaults
);
routes.MapRoute(
"Default", // Route name
"{controller}/{action}/{id}", // URL with parameters
new { controller = "Home", action = "Index", id = "" } // Parameter defaults
);
}
protected void Application_Start()
{
RegisterRoutes(RouteTable.Routes);
SessionManager.Instance.InitSessionFactory("acstech.helpWanted");
ViewEngines.Engines.Clear();
ViewEngines.Engines.Add(new ModeViewEngine());
}
I followed that by descending from WebFormViewEngine and changed the path from ~/View to ~/{mode}View. This worked and ran rendered the pages properly. The problem that I ran into is that the Html.ActionLink always uses the mode version no matter what the view rendered. Is this the proper direction for accomplishing my goal, if so what am I missing to get the Action Link to work properly. Below is the ViewEngine. This is a lab test, so some liberties have been taken.
public class ModeViewEngine : WebFormViewEngine
{
public ModeViewEngine()
{
}
protected override IView CreatePartialView(ControllerContext controllerContext, string partialPath)
{
string mode = String.Empty;
if (controllerContext.RouteData.Values["mode"] != null)
mode = controllerContext.RouteData.Values["mode"] as string;
return new WebFormView(partialPath.Replace("~/Views", "~/" + mode + "Views"), null);
}
protected override IView CreateView(ControllerContext controllerContext, string viewPath, string masterPath)
{
string mode = String.Empty;
if (controllerContext.RouteData.Values["mode"] != null)
mode = controllerContext.RouteData.Values["mode"] as string;
return new WebFormView(viewPath.Replace("~/Views", "~/" + mode + "Views"), masterPath);
}
}
Have you tried adding mode="" in the defaults array in the default route? That is, as I understand it, how the "Index" action gets omitted from URLs, so that should in theory make it match your default route I believe.
Why not have your controller just pick a different view based on the mode? Then you can return your Home view or Home_Xml.
I guess your way moves this decision out of the controller and centralizes the logic, but it also requires you to create a matching view in each Mode you have.
Well the great thing about the Asp.Net framework is that is that is is very extensible. I think you should check out this link. It will have exactly what you are looking for. My opion, along with the authors is to create a ActionFilter and decorate your views in the controller needing XML or even JSON views. I have even seen cases where all the serialization to XML happens in the Filter and that is returned, thus not needing a ViewEngine.
http://jesschadwick.blogspot.com/2008/06/aspnet-mvc-using-custom-view-engines.html

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