I am doing some plugin kind of work using asp.net mvc.
I have two plugins(mvc projects) Say users and home. In both the plugins, I have Home Controllers. Yes the names are home controller in both the plugins(projects). When I build the project the Dlls are copied to the host project (third one).
this is home plugin
namespace Plugin.Home.Controllers
{
public class HomeController : Controller
{
public string Index()
{
return "Home from home";
}
public string JustATest()
{
return "Just a test from home";
}
}
}
Here is another controller in different project(User Plugin)
this is home controller
namespace Plugin.Users.Controllers
{
public class HomeController : Controller
{
public string Index()
{
return "Home from Users";
}
public string JustATest()
{
return "Just a test from Users";
}
public string JustAnotherTest()
{
return "Just another test from Users";
}
}
}
In global.asax I have register routes using namespaces.
routes.MapRoute(
"Default", // Route name
"Home/{action}/{id}", // URL with parameters
new { controller = "Home", action = "Index", id = UrlParameter.Optional },
new[] { "Plugin.Home.Controllers" }
routes.MapRoute(
"Users", // Route name
"users/{action}/{id}", // URL with parameters
new { controller = "Home", action = "Index", id = UrlParameter.Optional }, new[] { "Plugin.Users.Controllers" }
);
I can access all the routes in the browser without any problem.
Now the problems
I try to use #{Html.RenderAction("JustATest","Home");}
It only renders from the home controller in home module. How can i render it from Users module.
It throws an exception saying method not found in home controller,
when I say #{Html.RenderAction("JustAnotherTest","Home");}
At what stage I can check if a given controller has the given method or not (Some ControllerFactory). Or how can i make sure it picks up the right controller.
Help will be appreciated.
Regards
Parminder
If you really need to save controller names both HomeController, i see simple solution to use hack like this:
routes.MapRoute(
null,
"{home}/{action}/{id}",
new { controller = "Home", action = "Index", home="Home", id = UrlParameter.Optional });
routes.MapRoute(
null,
"{home}/{action}/{id}",
new { controller = "Home", action = "Index", home="Users", id = UrlParameter.Optional }
);
And you can access to this actions both by url and with RenderAction:
#{Html.RenderAction("JustATest","Home", new {home="Home"});}
#{Html.RenderAction("JustATest","Home", new home="Users");}
But I think that problem is artificial (because it is more hard that you imagine), and you use means only for using means, but not for solving real problem. For real plugin architecture you need to create at least:
1. Custom Route Constraint for checking, that controller type is from assembly, where controller was defined.
2. Installer, that will install all routes independently of main application
3. Create unit tests for each plugin application Routes to ensure that all routes, that was installed from plugins, that do not know anything about each other, works properly (and don't break each other).
I recommend to take your controllers at main web application and give them different names.
See the format used here:
render action with lambda
#Html.RenderACtion<Plugin.Home.Controllers.HomeController>(...)
Edit
I see your issue now. It's that they are dynamically loaded at runtime and hence the names aren't known when you compile. Check out using DefaultControllerFactory as mentioned in various postings here:
How to achieve a dynamic controller and action method in ASP.NET MVC?
Related
When I try to access the Index view of my controller, I get an HTTP 404 error.
But if I deploy the app on the server, everything works fine. Even if I access my action by typing in the URL User/Index.
The problem is it can't find the Index action on its on.
I don't have this problem with other controllers. For example I can input: /Weather, /Forms just fine, and it goes directly into the Index action methods of those controllers.
This is my UserController and its Index action method:
public class UserController : SerializeController
{
private readonly IUsers Users;
public UserController(IUsers users)
{
Users = users;
}
public ActionResult Index()
{
return View();
}
......
}
and my RouteConfig.cs :
routes.MapRoute(name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Dashboard", action = "Index", id = UrlParameter.Optional });
It's weird - why is this only happening on the Index action of that one controller - and not others?
I'm also using Autofac dependency injection and registering my interface like this :
Container.RegisterType<Users>().As<IUsers>().InstancePerLifetimeScope();
For Calling this controller , Ive just using simple browser call e.g.:
http://localhost:2569/User , and it shows :
And Also Chrome network tab result :
But if i publish it into IIS and call example.org/User , the action opens without any problem.
I want to override search controller. When I try to install a plugin, I get an error exception what multiple type were found for the controller named Catalog.
Multiple types were found that match the controller named 'Catalog'. This can happen if the route that services this request ('AdvanceSearch') does not specify namespaces to search for a controller that matches the request. If this is the case, register this route by calling an overload of the 'MapRoute' method that takes a 'namespaces' parameter.
And my route priority is most(100).
public void RegisterRoutes(RouteCollection routes)
{
// Product Search,
routes.MapRoute("Plugin.Misc.Twigoh.Search",
"Search",
new { controller = "Catalog", action = "Search" },
new[] { "Nop.Plugin.Misc.Twigoh.Search.Controllers" });
}
public int Priority
{
get
{
return 100;
}
}
You can override your route like this:
When you override route, then you should use MapLocalizedRoute(not MapRoute) which is override localized route. Here you are trying to define route which is already define.
Here do not use MapRoute use MapLocalizedRoute in this way.
routes.MapLocalizedRoute("Plugin.Misc.Twigoh.Search",
"search/",
new { controller = "Catalog", action = "Search" },
new[] { "Nop.Plugin.Misc.Twigoh.Search.Controllers" });
Edit:
I want same route and functionality but default controller can't have
"/" search feature little bit different
/search is default route of product search, you can see in Nop.Web > Infrastructure > RouteProvider.cs
Hope this helps!
May be you rename your project so that the file name of the assembly changes, it's possible for you to have two versions.
So remove old .dll from bin folder and build your project.
I am creating a asp.net mvc 4 application
public class AspNetController : Controller
{
//
// GET: /AspNet/
public ActionResult Index()
{
return View();
}
public ActionResult Introduction()
{
return View();
}
}
as Shown Above There is AspNet Controller and Introduction Action Method
Default Url for Introduction Action Method is
localhost:55134/aspnet/introduction
But I Want Url Like
localhost:55134/aspnet/introduction-To-AspNet
Same for
/localhost:55134/aspnet/NetFrameWork To
/localhost:55134/aspnet/What-is-.Net-Framework
How to do that
You should be able to use the ActionName attribute to decorate your routes.
[ActionName("Introduction-To-AspNet")]
public ActionResult Introduction()
{
return View();
}
You really want to use AttributeRouting, either via a 3rd party package or natively if you can.
Technically this concept comes under Routing in ASP.NET MVC.
For this you need to do an entry for route in App_Start->RouteConfig.cs file under RegisterRoutes(RouteCollection routes)
For Example:
routes.MapRoute(
"customRouteName",
"aspnet/introduction-To-AspNet",
new { controller = "AspNet", action = "Introduction" });
here aspnet/introduction-To-AspNet will append after your base url i.e. localhost:55134/
The quick and dirty answer is to add a route to your ~/AppStart/RouteConfig.cs file and it will be taken care of:
routes.MapRoute(
name: "CustomRoute",
url: "Aspnet/Introduction-To-AspNet",
defaults: new { controller = "Home", action = "AspNet", id = UrlParameter.Optional }
);
However, I'm assuming this is for some type of blog? I would reccomend that you have an action method called view, and then use your name as a parameter for the article. That way, you don't have to go in and edit the code every time you add a new article or other content:
public class ArticlesController : Controller
{
public ActionResult ViewArticle(string? title)
{
ViewBag.Article = title;
return View();
}
}
that way, your URL would be www.yoursite.com/Articles/ViewArticle/Introduction-To-AspNet. In general, you don't want to add tons of specific routes to your route config if you can avoid it. That being said, if this is a legacy system, the route table may be the only way.
EDIT
Ok, so what you can do is pass the string into the ViewBag and use a case statement to determine which partial view to show (I think this just might be your ideal solution):
<!--cshtml view-->
#switch(ViewBag.Article)
{
case 'Introduction-To-AspNet':
#Html.Partial('pathToPartialView.cshtml')
break;
case 'Some-Other-Article'
#Html.Partial('pathToAnotherPartialView.cshtml')
break;
...
...
default:
#Html.Partial('invalidArticleName.cshtml')
break;
}
The controller will pass the article name through the ViewBagand then you can use the case statement to figure out which article to render... and of course, the real secret sauce you've been looking for: #Html.Partial('URL') - this will take your partial and render it right were you put that in the page. You can also pass objects to that just as an FYI.
In addition, make sure that you have a default action on the switch statement that will show some sort of 404 page that indicates that the name in the URL was invalid. You ALWAYS want to have this anytime you're taking user input from the URL because people monkey with URLs all the time (and more innocently, copy+paste them wrong/incompletely all the time)
I have problem with create ulr routing for asp.net mvc3 application.
My project has this structure :
Areas
EmployeeReport
Controllers
Report
Views
Report
List
....
Controllers
Login
Viwes
Login
...
EmployeeReportAreaRegistration.cs :
public class EmployeeReportAreaRegistration : AreaRegistration
{
public override string AreaName
{
get
{
return "EmployeeReport";
}
}
public override void RegisterArea(AreaRegistrationContext context)
{
var routes = context.Routes;
routes.MapRoute(null, "vykazy/vykazy-zamestnance", new { Area = "EmployeeReport", controller = "Report", action = "List" });
}
}
Global.asax :
routes.MapRoute(null, "prihlasit", new { controller = "Login", action = "Login" });
routes.MapRoute("Default", "{controller}/{action}/{id}", new { controller = "Default", action = "Welcome", id = UrlParameter.Optional });
When i try load "http://localhost/app_name/vykazy/vykazy-zamestnance
i get this exception :
The view 'List' or its master was not found or no view engine supports the searched locations. The following locations were searched:
~/Views/Report/List.aspx
~/Views/Report/List.ascx
~/Views/Shared/List.aspx
~/Views/Shared/List.ascx
~/Views/Report/List.cshtml
~/Views/Report/List.vbhtml
~/Views/Shared/List.cshtml
~/Views/Shared/List.vbhtml
Well, where I do mistake ?
Thanks
revised answer:
Adding to Context.Routes directly means it loses any information about Areas.
Either use AreaRegistration.MapRoute (which is overriden to put in the Area information).
context.MapRoute(...);
Or put the area in the DataTokens parameter (not the defaults parameter as you have done here)
context.Routes.MapRoute("", "url", new {...}, null, new {area = this.AreaName});
Your folder structure for your area should look like so:
Areas
EmployeeReport
Controllers
Views
I am working on a very simple application, using MVC2 Preview 1.
I have a controller named ContentController. My problem is that /Content/Index works correctly, but /Content/ returns a 404. I am running the application on the Studio Development Server.
Tested with RouteDebugger but /Content/ returns a 404, and does not display any debugging information.
I have not changed the routing code:
routes.MapRoute(
"Default", // Route name
"{controller}/{action}/{id}", // URL with parameters
new { controller = "Home", action = "Index", id = "" } // Parameter defaults
);
This is my controller:
public class ContentController : Controller
{
IRepository _repo = new SimpleRepository("db", SimpleRepositoryOptions.RunMigrations);
public ActionResult Index()
{
var content = _repo.GetPaged<Content>(0, 20);
return View(content);
}
It's a shot in the dark, but do you have a directory named /Content/ as well?
/Content is a controller, which is basically just a collection of actions. ASP.NET MVC needs to know WHICH action you want to run, so by leaving out the action asp.net mvc doesn't know what action to return and gives a 404.
You can tell it a default either by adding a route:
eg:
routes.MapRoute("ContentDefault", "Content", new {controller = "Content", action = "Index"});
The attributes are defined as follows:
'ContentDefault`: Name of the Route (must be unique in your routing table)
Content: The URL segment (try changing this to 'Content/Much/Longer/URL' and then go to http://localhost/Content/Much/Longer/URL to see how this works)
new {controller=.., action=...}: which controller/action combo to run for this route.
You could also override HandleUnknownAction in your controller:
protected override void HandleUnknownAction(string actionName)
{
return RedirectToAction("index");
}
Oh and incidentally, an extra piece of advice about routing.... if you add something to the route in braces { } these will be passed to the action as an attribute.
e.g. /Content/Much/Longer/Url/{page}
so the URL http://localhost/Content/Much/Longer/Url/999
will pass the 999 into your action, as the page attribute
public ActionResult Index(int Page) { }
I love MVC - never going back to WebForms - this is how web development should be!