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  • Tom Engan 430 posts 1173 karma points
    Dec 15, 2017 @ 10:02
    Tom Engan
    0

    SurfaceController: Return of URL that maintains ModelState

    Extending Umbraco and using the API
    Umbraco 7

    Which method is simplest (best practice) to maintain ModelState like with return CurrentUmbracoPage();

    I want a return method in the surface controller that returns ModelState, but Redirect does not retain ModelState. This should be a normal scenario, but can't find equivalent option for return method. The url contains parameter and anchor so the string is correct (/turlister?partial=LoginForm#tab-1)

    if (!ModelState.IsValid)
     // return CurrentUmbracoPage ();   <= ModelState is maintained
     return Redirect(string.Format("{0}#tab-1", "/turlister?partial=LoginForm"));
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  • Alex Skrypnyk 6132 posts 23951 karma points MVP 7x admin c-trib
    Dec 15, 2017 @ 10:54
    Alex Skrypnyk
    0

    Hi Tom

    I'm not sure that it's right way to handle url fragments - Redirect(string.Format("{0}#tab-1", "/turlister?partial=LoginForm"));

    Maybe it's better to use return CurrentUmbracoPage (); and pass some value to client in the ViewData and use this data in js for scrolling the page to 

    string.Format("{0}#tab-1", "/turlister?partial=LoginForm")

    What do you think? Is it a solution?

    Thanks,

    Alex

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  • Tom Engan 430 posts 1173 karma points
    Dec 15, 2017 @ 11:25
    Tom Engan
    100

    Thanks for your reply. I actually get the correct url with string.Format("{0}#tab-1", "/turlister?partial=LoginForm"), and now I've also found a solution that works

    base controller

    protected override void OnActionExecuted(ActionExecutedContext filterContext)
{
    if (TempData["ModelState"] != null && !ModelState.Equals(TempData["ModelState"]))
        ModelState.Merge((ModelStateDictionary)TempData["ModelState"]);

    base.OnActionExecuted(filterContext);
}

    ActionResult

    if (!ModelState.IsValid) {
    TempData["ModelState"] = ModelState;
    return Redirect(string.Format("{0}#tab-1", "/turlister?partial=LoginForm")); }

    Now I can validate fields as before, both on the client side and on the server side.

    I found the solution here: https://stackoverflow.com/questions/658747/how-do-i-maintain-modelstate-errors-when-using-redirecttoaction

    What is by the way best practice regarding where to put OnActionExecuted, because I intend to use the method in several controllers?

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