Get tempdata/ session/viewbag values in external javascript file

Question

I have a custom AuthorizeAttribute defined in which when the user is unauthorized I am setting a tempdata["UnAuthorized"]=true. I am trying to access this value in an external javascript file which is referenced in the cshtml view, but I am uanble to get the value, it errs out Below is the custom authorize piece

protected override void HandleUnauthorizedRequest(AuthorizationContext filterContext)
    {
        filterContext.Result = new RedirectResult("/");
        base.HandleUnauthorizedRequest(filterContext);

        if (!filterContext.HttpContext.User.Identity.IsAuthenticated)
        {
            //if not logged, it will work as normal Authorize and redirect to the Login
            base.HandleUnauthorizedRequest(filterContext);
        }
        else
        {
            filterContext.Controller.TempData ["UnAuthorized"] = true;
            filterContext.Result = new RedirectResult("/Error");
        }
    }

This is how I am trying to access it in my external .js file

function SetData(data) {
        var test = TempData["UnAuthorized"];
        if (!test)
        {
            $('#SetModal').html(data);
            $('#SetModal').dialog('open');
        }

    }

I am unable to retrieve the value stored in TempData. Please suggest. I am using asp.net mvc 5, jquery, C#

I tried this and it just displays the '@TempData["UnAuthorized"]' as a string and still not displaying the value. It is displaying the string with "/" "@TempData[\"UnAuthorized\"]" — user3557236
– user3557236, Commented Jul 20, 2015 at 22:23
are you using this in an external js file? if yes then try it in a .cshtml file — Sushil
– Sushil, Commented Jul 20, 2015 at 22:31
then you wont be able to access the C# code. what you can do is add the value of TempData in a hiddenField in your .cshtml page and use the value of it in the external js file. e.g. <input type="hidden" id='hiddError' value="@TempData["UnAuthorized"]" /> and access it in ur external js file like this var test = $('#hiddError').val(); — Sushil
– Sushil, Commented Jul 20, 2015 at 22:36

jimSampica · Accepted Answer · 2015-07-21 02:50:27Z

7

Put another script in your razor view to store the value in a javascript variable and then you can use the value in your external file.

Razor:

@section scripts {
    <script type="text/javascript">
        var unauthorized = '@TempData["UnAuthorized"]';
    </script>
    <script type="text/javascript" src="~/Content/Scripts/external.js">
}

External.js

if(unauthorized) {
    alert("unauthorized");
}

answered Jul 21, 2015 at 2:50

jimSampica

12.5k3 gold badges69 silver badges87 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

user3557236 Over a year ago

I have master.cshtml which refs master.js. Master.cshtml has a custom context menu,when clicked posts a ajax request which calls a controller/action method which has customauthorize attribute. Since the user is not authorized customauthorize attribute redirects to unauthorized.cshtml where I put your script code unauthorized="@Tempdata['UnAuthorized']". same master.js file in this cshtml as well. SetData code is in master.js and var unauthorized=undefined. The flow is master.cshtml--->customattribute--fails to atuhroize since the user does not have rights-->unauthorized.cshtml--->master.js

Collectives™ on Stack Overflow

Get tempdata/ session/viewbag values in external javascript file

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related