jQuery ajax - call various MVC controller actions

Question

I have a controller ( RequestsController ) with several actions (all taking one parameter)

For example:

• public List<Models.AcceptRequests> GetAllAcceptRequests(int passedId)
• public List<Models.Requests> GetAllRequests(int passedId)
• public List<Models.CancelRequests> GetAllCancelRequests(int passedId)

I am calling each of these actions from jQuery ajax as follows:

  var s = { passedId: 0, } $.ajax({ url: "../api/Requests/GetAllAcceptRequests", type: "GET", dataType: 'json', data: JSON.stringify(s), contentType: "application/json; charset=utf-8", success: function (response) { vm.Requests(ko.utils.unwrapObservable(ko.mapping.fromJS(response))); } }); 

I receive the following error:

Multiple actions were found that match the request: System.Collections.Generic.List1 [TCMSWeb.Models.Requests] GetAllRequests(Int32)

It is my understanding that you can call a controller action regardless of the parameters conflicting with other actions. Is this not the case then?

How can I call each controller action without having to specify a unique number of parameters for each?

EDIT:

  public static void RegisterRoutes(RouteCollection routes) { routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); 

        routes.MapRoute(
            name: "Default",
            url: "{controller}/{action}/{id}",
            defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
        );
    }

Answer 1

It is my understanding that you can call a controller action regardless of the parameters conflicting with other actions

No, this understanding is wrong. This only makes the C# compiler happy but is invalid in ASP.NET MVC. You cannot have 2 controller actions with the same name on the same controller accessible with the same HTTP verb regardless of the parameters they are taking.

Answer 2

Change the Register method in WebApiConfig.cs like this.

routes.MapHttpRoute(
    name: "ActionApi",
    routeTemplate: "api/{controller}/{action}/{id}",
    defaults: new { id = RouteParameter.Optional }
);

This will enable RPC style routing. Also, change your jQuery call, like this. 1234 is just hard-coded data which will be bound to passedId parameter.

$.ajax({
        url: "../api/Requests/GetAllAcceptRequests?passedid=1234",
        type: "GET",
        dataType: 'json',
        success: function (response) {
            vm.Requests(ko.utils.unwrapObservable(ko.mapping.fromJS(response)));
        }
    });

You can also use url: "../api/Requests/GetAllAcceptRequests/1234" , if you change the route mapping to

routes.MapHttpRoute(
    name: "ActionApi",
    routeTemplate: "api/{controller}/{action}/{passedid}",
    defaults: new { passedid = RouteParameter.Optional }
);