How to pass dynamic value in @Url.Action?

Question

I have written following jquery in my partial view:

    $.ajax({
        type: "POST",
        url: '@Url.Action("PostActionName", "ControllerName")',
        data: { Id: "01" },
        success: function(data)
            {
            if (data.success="true")
                {
                    window.location = '@Url.Action("GetActionName", "ControllerName")'
                }
            }
    });

The Action name and Controller name are not fixed, they are bound to change depending upon the view wherein this partial view is placed. I have functions to fetch invoking action and controller names, but not sure how I can pass them in @Url.Action.

Following are Javascript functions to fetch action and controller names:

function ControllerName() {
            var pathComponents = window.location.pathname.split('/');
            var controllerName;
            if (pathComponents.length >= 2) {
                if (pathComponents[0] != '') {
                    controllerName = pathComponents[0];
                }
                else {
                    controllerName = pathComponents[1];
                }
            }
            return controllerName;
        }

        function ActionName() {
            var pathComponents = window.location.pathname.split('/');
            var actionName;
            if (pathComponents.length >= 2) {
                if (pathComponents[0] != '') {
                    actionName = pathComponents[1];
                }
                else {
                    actionName = pathComponents[2];
                }
            }
            return actionName;            
        }

Your currently passing two strings to Url.Action. They could well be variables. — David Hedlund
"are not fixed, they are bound to change" - where are the values coming from? — von v.
As @Url.Action is an MVC helper, Creating a variable will not help me.. — Nirman

Darin Dimitrov Darin Dimitrov · Accepted Answer · 2013-04-17T06:08:13

I have functions to fetch invoking action and controller names, but not sure how I can pass them in @Url.Action

Well, you could call those functions. For example if they are extension methods to the UrlHelper class:

window.location = '@Url.Action(Url.MyFunction1(), Url.MyFunction2())'

or if they are just static functions:

window.location = '@Url.Action(SomeClass.MyFunction1(), SomeClass.MyFunction2())'

If on the other hand the values that need to be passed are known only on the client you could do the following:

var param = 'some dynamic value known on the client';
var url = '@Url.Action("SomeAction", "SomeController", new { someParam = "__param__" })';
window.location.href = url.replace('__param__', encodeURIComponent(param));

UPDATE:

It seems that you are just trying to fetch the current controller and action which could be achieved like that:

@{
    string currentAction = Html.ViewContext.RouteData.GetRequiredString("action");
    string currentController = Html.ViewContext.RouteData.GetRequiredString("controller");
}

and then:

window.location.href = '@Url.Action(currentAction, currentController)';

How to pass dynamic value in @Url.Action?

3 Answers