I am using MEF to dynamically load controllers in an MVC3 app.
In the export metadata I am specifying two meta data constraints
EX:
[ExportMetadata("controllerName", "APSR")]
[ExportMetadata("controllerVersion", "1.0.0.0")]
In my "main" mvc app, I am using a RedirectToAction method (In reponse to a user click on a dropdown)
[HttpPost]
public ActionResult Index(Models.HomeViewModel selected)
{
//ViewData.Add("Version", selected.AvailableWorkflows[int.Parse(selected.SelectedWorkflow)].Version);
return RedirectToAction("Create", selected.AvailableWorkflows[int.Parse(selected.SelectedWorkflow)].Controller);
}
How can I pass the desired version number to my Controller factory? Since the IControllerFactory.CreateController method only excepts to paramters:
IController IControllerFactory.CreateController(System.Web.Routing.RequestContext requestContext, string controllerName)
I would imagine you need some additional route data, and reading that when creating your controller.
For instance, I could define a route as:
routes.MapRoute(
"APSR_Create",
"/apsr/{version}/create",
new {
controller = "APSR",
action = "Create",
version = "1.0.0.0"
});
Now, when I create an instance of my controller, I can grab that version item from the RequestContext.RouteData collection:
public IController IControllerFactory.CreateController(System.Web.Routing.RequestContext requestContext, string controllerName)
{
string version = requestContext.RouteData["version"];
// Create instance using metadata lookup...
}
You just need to ensure that you are passing the version as an argument to the route.
return RedirectToAction(
"Create",
new { version = selected.AvailableWorkflows[int.Parse(selected.SelectedWorkflow)].Version });
Related
I followed this tutorial, and created this code:
using Glass.Sitecore.Mapper;
using Sitecore.Mvc.Controllers;
using Sitecore.SecurityModel;
using SitecoreCMSMVCBase.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
namespace SitecoreCMSMVCBase.Controllers
{
public class CommentController : SitecoreController
{
ISitecoreContext _context;
ISitecoreService _master;
public CommentController()
: this(
new SitecoreContext(),
new SitecoreService("master"))
{
}
/// <summary>
/// This constructor can be used with dependency injection or unit testing
/// </summary>
public CommentController(ISitecoreContext context, ISitecoreService master)
{
_context = context;
_master = master;
}
[HttpGet]
public override ActionResult Index()
{
var model = _context.GetCurrentItem<CommentPage>();
return View(model);
}
[HttpPost]
public ActionResult Index(Comment comment)
{
var webModel = _context.GetCurrentItem<CommentPage>();
if (ModelState.IsValid)
{
var masterModel = _master.GetItem<CommentPage>(webModel.Id);
if (masterModel.CommentFolder == null)
{
CommentFolder folder = new CommentFolder();
folder.Name = "Comments";
using (new SecurityDisabler())
{
_context.Create(masterModel, folder);
}
masterModel.CommentFolder = folder;
}
using (new SecurityDisabler())
{
comment.Name = DateTime.Now.ToString("yyyyMMddhhmmss");
//create the comment in the master database
_master.Create(masterModel.CommentFolder, comment);
webModel.CommentAdded = true;
}
}
return View(webModel);
}
}
}
Models are identical with tutorial, so I will not paste them.
My route configuration looks like this:
routes.MapRoute(
"CommentController", // Route name
"Comment/{action}/{id}", // URL with parameters
new { controller = "Comment", action = "Index", id = UrlParameter.Optional } // Parameter defaults
);
When I navigate to /comment I see this exception:
Glass.Sitecore.Mapper.MapperException: Context has not been loaded
I tried with commenting my route specification (as there was nothing about routes in tutorial), and then error is different (throwing by Sitecore CMS itself):
The requested document was not found
Do you know how to load Sitecore context into custom Controller, and make this simple example work? I was looking everywhere but couldn't find any good answer...
I think this is more a Glass setup issue, rather than an MVC routing problem.
To setup Glass, you need to initialise the context in your application start method in your Global.asax file.
var loader = new Glass.Sitecore.Mapper.Configuration.Attributes.AttributeConfigurationLoader(
"Glass.Sitecore.Mapper.Tutorial.Models, Glass.Sitecore.Mapper.Tutorial");
Glass.Sitecore.Mapper.Context context = new Context(loader);
For other Glass-setup related stuff I recommend following the first tutorial on the glass.lu website.
http://www.glass.lu/tutorials/glass-sitecore-mapper-tutorials/tutorial-1-setup/
This method doesn't need Glass at all!
First step is to set your route in Global.asax file.
routes.MapRoute(
"DemoController", // Route name
"Demo/{action}/{param}", // URL with parameters
new { controller = "Demo", action = "Index", param = "", scItemPath = "/sitecore/content/DemoHomePage" } // Parameter defaults
);
Notice that controller is not taken as parameter, but is fixed, to prevent handling it by Sitecore. More info here and here. Notice that there is one additional parameter - scItemPath. It contains path to item which by default will be included in page context.
Having this route our traffic from /demo is handled by DemoController and Index action. Inside this action all you need is to add is this line:
Sitecore.Data.Items.Item item = Sitecore.Mvc.Presentation.PageContext.Current.Item;
item variable will contain your Sitecore item pointed by scItemPath.
And that's all - it should work well now - hope it helps!
Is there a way to tell what view a controller action is being called from?
For example, I would like to use "ControllerContext.HttpContext.Request.PhysicalPath" but it returns the path in which the controller action itself is located:
public ActionResult HandleCreateCustomer()
{
// Set up the customer
//..code here to setup the customer
//Check to see of the calling view is the BillingShipping view
if(ControllerContext.HttpContext.Request.PhysicalPath.Equals("~/Order/BillingShipping"))
{
//
return RedirectToAction("OrderReview", "Order", new { id = customerId });
}
else
{
return RedirectToAction("Index", "Home", new { id = customerId });
}
}
If you have a fixed number of locations that it could possibly be called from, you could create an enum where each of the values would correspond to a place where it could have been called from. You'd then just need to pass this enum value into HandleCreateCustomer, and do your condition statement(s) based on that.
At the moment I am using something of the sort:
In the View I am populating a TempData variable using:
#{TempData["ViewPath"] = #Html.ViewVirtualPath()}
The HtmlHelper method ViewVirtualPath() is found in the System.Web.Mvc.Html namespace (as usual) and is as follows and returns a string representing the View's virtual path:
public static string ViewVirtualPath(this HtmlHelper htmlHelper)
{
try{
return ((System.Web.WebPages.WebPageBase)(htmlHelper.ViewDataContainer)).VirtualPath;
}catch(Exception){
return "";
}
}
I will then obviously read the TempData variable in the controller.
I found another way.
In the controller you want to know what page it was called from.
I added the following in my controller
ViewBag.ReturnUrl = Request.UrlReferrer.AbsolutePath;
Then in the View I have a 'Back' button
#(Html.Kendo().Button().Name("ReturnButton")
.Content("Back to List").Events(e => e.Click("onReturn"))
.HtmlAttributes(new { type = "k-button" })
)
Then the javascript for the onReturn handler
function onReturn(e) {
var url = '#(ViewBag.ReturnUrl)';
window.location.href = url;
}
What I have is the following extension method:
public MyCustomAttribute[] GetActionAttributes(
this Controller #this,
string action,
string controller,
string area,
string method)
{
}
How does ASP.NET MVC 3 find the action method, given the area, controller, action names and the method (GET, POST)?
To this moment I have nothing... no clues on how to do this.
I am currently looking for the stack trace inside a controller action, to find out how MVC dicovered it.
Why I need these attributes
My attributes contain information about whether a given user can or not access it... but depending on whether they can or not access it, I wan't to show or hide some html fields, links, and other things that could call that action.
Other uses
I have thought of using this to place an attribute over an action, that tells the css class of the link that will be rendered to call it... and some other UI hints... and then build an HtmlHelper that will render that link, looking at these attributes.
Not a duplicate
Yes, some will say this is possibly a duplicate of this question...
that does not have the answer I want:
How can i get the MethodInfo of the controller action that will get called given a request?
That's why I have specified the circumstances of my question.
I have looked inside MVC 3 source code, and tested with MVC 4, and discovered how to do it.
I have tagged the question wrong... it is not for MVC 3, I am using MVC 4. Though, as I could find a solution looking at MVC 3 code, then it may work with MVC 3 too.
At the end... I hope this is worth 5 hours of exploration, with a lot trials and errors.
Works with
MVC 3 (I think)
MVC 4 (tested)
Drawbacks of my solution
Unfortunately, this solution is quite complex, and dependent on things that I don't like very much:
static object ControllerBuilder.Current (very bad for unit testing)
a lot of classes from MVC (high coupling is always bad)
not universal (it works with MVC 3 default objects, but may not work with other implementations derived from MVC... e.g. derived MvcHandler, custom IControllerFactory, and so on ...)
internals dependency (depends on specific aspects of MVC 3, (MVC 4 behaves like this too) may be MVC 5 is different... e.g. I know that RouteData object is not used to find the controller type, so I simply use stub RouteData objects)
mocks of complex objects to pass data (I needed to mock HttpContextWrapper and HttpRequestWrapper in order to set the http method to be POST or GET... these pretty simple values comes from complex objects (oh god! =\ ))
The code
public static Attribute[] GetAttributes(
this Controller #this,
string action = null,
string controller = null,
string method = "GET")
{
var actionName = action
?? #this.RouteData.GetRequiredString("action");
var controllerName = controller
?? #this.RouteData.GetRequiredString("controller");
var controllerFactory = ControllerBuilder.Current
.GetControllerFactory();
var controllerContext = #this.ControllerContext;
var otherController = (ControllerBase)controllerFactory
.CreateController(
new RequestContext(controllerContext.HttpContext, new RouteData()),
controllerName);
var controllerDescriptor = new ReflectedControllerDescriptor(
otherController.GetType());
var controllerContext2 = new ControllerContext(
new MockHttpContextWrapper(
controllerContext.HttpContext.ApplicationInstance.Context,
method),
new RouteData(),
otherController);
var actionDescriptor = controllerDescriptor
.FindAction(controllerContext2, actionName);
var attributes = actionDescriptor.GetCustomAttributes(true)
.Cast<Attribute>()
.ToArray();
return attributes;
}
EDIT
Forgot the mocked classes
class MockHttpContextWrapper : HttpContextWrapper
{
public MockHttpContextWrapper(HttpContext httpContext, string method)
: base(httpContext)
{
this.request = new MockHttpRequestWrapper(httpContext.Request, method);
}
private readonly HttpRequestBase request;
public override HttpRequestBase Request
{
get { return request; }
}
class MockHttpRequestWrapper : HttpRequestWrapper
{
public MockHttpRequestWrapper(HttpRequest httpRequest, string httpMethod)
: base(httpRequest)
{
this.httpMethod = httpMethod;
}
private readonly string httpMethod;
public override string HttpMethod
{
get { return httpMethod; }
}
}
}
Hope all of this helps someone...
Happy coding for everybody!
You can achieve this functionality by using the AuthorizeAttribute. You can get the Controller and Action name in OnAuthorization method. PLease find sample code below.
public sealed class AuthorizationFilterAttribute : AuthorizeAttribute
{
/// <summary>
/// Use for validate user permission and when it also validate user session is active.
/// </summary>
/// <param name="filterContext">Filter Context.</param>
public override void OnAuthorization(AuthorizationContext filterContext)
{
string actionName = filterContext.ActionDescriptor.ActionName;
string controller = filterContext.ActionDescriptor.ControllerDescriptor.ControllerName;
if (!IsUserHasPermission(controller, actionName))
{
// Do your required opeation
}
}
}
if you have a default route configured like
routes.MapRoute(
"Area",
"",
new { area = "MyArea", controller = "Home", action = "MyAction" }
);
you can get the route information inside the controller action like
ht tp://localhost/Admin
will give you
public ActionResult MyAction(string area, string controller, string action)
{
//area=Admin
//controller=Home
//action=MyAction
//also you can use RouteValues to get the route information
}
here is a great blog post and a utility by Phil Haack RouteDebugger 2.0
This is a short notice! Be sure to use filterContext.RouteData.DataTokens["area"]; instead of filterContext.RouteData.Values["area"];
Good Luck.
I'm trying to add some custom routing logic based on url's stored in a database for mvc. (CMS Like), I think its fairly basic, but I feel like i'm not really getting anywhere.
Basically a user may type url's such as:
www.somesite.com/categorya/categoryb/categoryf/someitem
www.somesite.com/about/someinfo
In the database these items are stored, along with the type they are, i.e. a normal page, or a product page.
Depending on this I then want to actually hit a different 'action' method, i.e. I would like the above to hit the methods:
PageController/Product
PageController/Normal
These actions then load the content for this page and display the same view (product view, or a normal view).
Using the normal way of routing won't work, since I could potentially have things like;
cata/producta
cata/catb/catc/catd/cate/catf/producta
Now i've been looking here : ASP.NET MVC custom routing for search
And trying to use this as a basis, but how do I actually 'change' my action method I want to hit within the InvokeActionMethod call?
Using MVC 3.0 btw.
Thanks for any help/suggestions
Final Solution:
Global.asax
routes.MapRoute(
"Default",
"{*path}",
new { controller = "Page", action = "NotFound", path= "Home" }
).RouteHandler = new ApplicationRouteHandler();
Route Handlers
public class ApplicationRouteHandler : IRouteHandler
{
public IHttpHandler GetHttpHandler(RequestContext requestContext)
{
return new ApplicationHandler(requestContext);
}
}
public class ApplicationHandler : MvcHandler, IRequiresSessionState
{
public ApplicationHandler(RequestContext requestContext)
: base(requestContext)
{
}
protected override IAsyncResult BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, object state)
{
var url = RequestContext.RouteData.Values["path"].ToString();
var page = SomePageService.GetPageByUrl(url);
if (page == null)
{
RequestContext.RouteData.Values["Action"] = "NotFound";
}
else
{
RequestContext.RouteData.Values["Action"] = page.Action;
RequestContext.RouteData.Values["page"] = page;
}
return base.BeginProcessRequest(httpContext, callback, state);
}
}
Maybe not an exact solution for your situation, but I've recently had to handle something similar so this might point you in the right direction.
What I did was setup a simple route in Global.asax with a catch-all parameter which calls a custom RouteHandler class.
// Custom MVC route
routes.MapRoute(
"Custom",
"{lang}/{*path}",
new { controller = "Default", action = "Index" },
new { lang = #"fr|en" }
).RouteHandler = new ApplicationRouteHandler();
ApplicationRouteHandler.cs :
public class ApplicationRouteHandler : IRouteHandler
{
/// <summary>
/// Provides the object that processes the request.
/// </summary>
/// <param name="requestContext">An object that encapsulates information about the request.</param>
/// <returns>
/// An object that processes the request.
/// </returns>
public IHttpHandler GetHttpHandler(RequestContext requestContext)
{
string path = requestContext.RouteData.Values["path"] as string;
// attempt to retrieve controller and action for current path
Page page = GetPageData(path);
// Method that returns a 404 error
if (page == null)
return SetupErrorHandler(requestContext, "ApplicationRouteHandler");
// Assign route values to current requestContext
requestContext.RouteData.Values["controller"] = page.Controller;
requestContext.RouteData.Values["action"] = page.Action;
return new MvcHandler(requestContext);
}
}
Obviously the way you retrieve the action and controller names from your database will probably be much different than mine, but this should give you an idea.
I have two actions:
//Action 1
public FileResult Download(string folder, string fileName) { ... }
//Action 2
public FileResult Download(int id, string fileName) { ... }
When I try to download the following URL:
http://localhost:54630/Downloads/Download/15?fileName=sharedhostinggsg.pdf
The error happens:
The current request for action 'Download' on controller type 'DownloadsController' is ambiguous between the following action methods:
System.Web.Mvc.FileResult Download(Int32) on type SextaIgreja.Web.Controllers.DownloadsController
System.Web.Mvc.FileResult Download(System.String, System.String) on type SextaIgreja.Web.Controllers.DownloadsController
How can I make them:
Url: ../Downloads/Download/15?fileName=sharedhostinggsg.pdf
Action: Action 2
Url: ../Downloads?folder=Documentos$fileName=xx.docx
Action: Action 1
I tried to put a constraint on my route, but did not work:
routes.MapRoute(
"Download", // Route name
"Downloads/Download/{id}", // URL with parameters
new { controller = "Downloads", action = "Download" }, // Parameter defaults
new { id = #"\d+" }
);
Searching the Internet I found several links but I could not understand how I can solve my problem. This, for example, the RequireRequestValue attribute is not found. I do not know which namespace it is.
The RequireRequestValue that you mention is a custom class they created (from Example posted)so you will not find it in any Microsoft namespace.
The class you will see inherits from ActionMethodSelectorAttribute. This attribute class can be used to help filter actions much like the AcceptVerbs attribute. So as in the example of that link they are returning true or false dependant on if a value is specified in the route arguments.
So following from that example you posted, create a class called RequireRequestValueAttribute. Then decorate your two Downloads action methods like so:
[RequireRequestValue("id")]
public FileResult Download(int id, string fileName) { ... }
[RequireRequestValue("folder")]
public FileResult Download(string folder, string fileName) { ... }