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  • progproger 49 posts 106 karma points
    Sep 16, 2016 @ 14:17
    progproger
    0

    Model is null on postback in ajax loaded partial view

    Hi,

    I'm using the following pattern https://github.com/filamentgroup/Ajax-Include-Pattern to load partial views through ajax.

    View:

        @using(Html.BeginUmbracoForm("PostContactInformation", "JoiningSurface", null, new Dictionary<string, object> { { "class", "joinform" } })) {
            @Html.AntiForgeryToken()
            <div data-append="@Url.Action("RenderJoiningContactInformation", "JoiningSurface", new { ContentId = CurrentPage.Id })"></div>
        }
    

    With Action:

     public ActionResult RenderContactInformation(int ContentId)
           {
                var viewModel = ContactViewModel();
                viewModel.Content = Umbraco.TypedContent(ContentId);
    
                return PartialView("RenderContactInformation", viewModel);
            }
    

    Loads partial view perfectly.

    // No need to add partial view i think

    Post action works correctly as well:

    public ActionResult PostContactInformation(ContactViewModel model)  
    {
    //code here
        return RedirectToUmbracoPage(pageid);
    }
    

    The problem is, that i need to add model error to CurrentUmbracoPage if it exists in post...

    For example:

    public ActionResult PostContactInformation(ContactViewModel model)  
    {
        ModelState.AddModelError(string.Empty, "Error occurred");
        return CurrentUmbracoPage();
    }
    

    In this case i get null values for current model. And this happens only when i use ajax.

    If i load action synchronously like that:

       @using(Html.BeginUmbracoForm("PostJoiningContactInformation", "JoiningSurface", null, new Dictionary<string, object> { { "class", "joinform" } })) {
                    @Html.AntiForgeryToken()
                    @Html.Action("RenderContactInformation", "JoiningSurface", new { ContentId = CurrentPage.Id })
                }
    

    everything works like it should.

    But i need to use ajax. Is there a correct way to pass values on postback in this case? I know that i can use TempData, but i'm not sure that this is the best approach. Thanks for your patience

  • Alex Skrypnyk 5747 posts 21806 karma points MVP 4x admin c-trib
    Sep 16, 2016 @ 15:39
    Alex Skrypnyk
    0

    Hi ProgProger,

    Yes, this is a problem of AJAX requests, can you implement js validation?

    Thanks,

    Alex

  • progproger 49 posts 106 karma points
    Sep 16, 2016 @ 16:37
    progproger
    0

    Hi Alex,

    Thanks for your response... Js validation is working already. I re-initialize js validation on ajax request. But i need server side validation as on post there might be an error

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