Not Loading Partial View in MVC Application

Question

In my _Layout.cshtml view I have

@using SiteNET.Utilities
<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>"SomeTitle"</title>
    @Styles.Render("~/Content/css")
    @Scripts.Render("~/bundles/modernizr")

    <!-- Favicons -->
    <link rel="apple-touch-icon-precomposed"
          sizes="256x256"
          href="@Url.Content("~/Content/Images/SiteRetro256.png")">
    <link rel="shortcut icon"
          href="@Url.Content("~/Content/Icons/SiteRetro.ico")">
</head>
<body>
    <div class="container">
        <div class="navbar navbar-default" role="navigation">
            <div class="container-fluid">
                <div class="navbar-header">
                    <button type="button"
                            class="navbar-toggle"
                            data-toggle="collapse"
                            data-target=".navbar-collapse">
                        <span class="sr-only">Toggle navigation</span>
                    </button>
                    @Html.ActionLink(SiteNET.Utilities.Constants.Site,
                        "Index", "Home", null, new { @class = "navbar-brand" })
                </div>
                <div class="navbar-collapse collapse">
                    <ul class="nav navbar-nav">
                        <li class="@Url.MakeActive("Home")">
                            @Html.ActionLink("Home", "Index", "Home")
                        </li>
                        <li class="@Url.MakeActive("Index", "Contacts")">
                            @Html.ActionLink("Contacts", "Index", "Contacts")
                        </li>
                    </ul>
                    @Html.Action("_LoginPartial", "Account") <- THIS LINE
                </div>
            </div> <!--container-fluid-->
        </div> <!--navbar-->
        @RenderBody()
        <hr />
        ...
    </div>
</body>
</html>

My aim is be able to load a view model into my _LoginPartial view. So I have added the following to my AccountController class

[ChildActionOnly]
public ActionResult _LoginPartial()
{
    ApplicationUser user = null;
    ManageUserViewModel model = null;
    string userID = User.Identity.GetUserId() ?? String.Empty;
    if (!String.IsNullOrEmpty(userID))
    {
        user = UserManager.FindById(userID);
        model = new ManageUserViewModel();
        model.IsAdmin = user.IsAdmin;
    }
    return PartialView(model);
}

But this does not call this method from

@Html.Action("_LoginPartial", "Account")`

I have read this answer and have swapped the

@Html.Action("_LoginPartial", "Account")

to

@Html.Action("_LoginPartial", "Account", new { area = "" })

as the controller is not in the "Shared" folder. I have also tried

@Html.Action("_LoginPartial", "Account", new { area = "Controllers" })`

but I am just getting a browser error:

The page isn't redirecting properly

What am I doing wrong here?

Thanks for your time.

Edit. following @markpSmith's suggestion, I have attempted to use

 @{ Html.RenderAction("_LoginPartial", "Account"); }

_but this give the same error. _

No, I will try this now. Thanks. Downvoter, this is not outside of the scope of the forum. The question is well posed and has all of the required info... — MoonKnight
– MoonKnight, Commented Nov 10, 2014 at 14:42
Agree with above - a downvote is pointless without feedback so have cancelled it out with an upvote. — markpsmith
– markpsmith, Commented Nov 10, 2014 at 14:44
Cheers. I am just looking into how to use the RenderAction. Thanks again... — MoonKnight
– MoonKnight, Commented Nov 10, 2014 at 14:45
This gives the same error in the browser without an exception... — MoonKnight
– MoonKnight, Commented Nov 10, 2014 at 14:50

sandip patil · Accepted Answer · 2014-11-10 14:58:13Z

1

Use @Html.Partial("_LoginPartial")

You don't need to specify action in Controller as you can access User.Identity in View so update _LoginPartial with User.Identity instead of Model.

answered Nov 10, 2014 at 14:58

sandip patil

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4 Comments

MoonKnight Over a year ago

But then in the view I will have to get the user like user = UserManager.FindById(userID) so will have to intantiate the UserManager is this okay to do?

sandip patil Over a year ago

You can check if logged in user is Admin using User.IsInRole("Admin") code so I think you don't need to user info from UserManager. Is it making sense?

MoonKnight Over a year ago

Kind of, but I am not using Roles (this may be deemed bad!). The reason is that the application is very simple and there will be only one Admin user. So i have stored a field called IsAdmin in the user database. All users are created IsAdmin=false except a single user called Administrator which has IsAdmin =true set when the database is first created. I am taking your advice though and checking the User.IsAdmin in the view...

sandip patil Over a year ago

I would suggest instead on invoking Action for this single reason you can create BaseController and override OnActionExecuting and set ViewBag.IsAdmin true or false as per your conditions. And inherit all your controllers from BaseController.

jbutler483 · Accepted Answer · 2014-11-10 15:14:57Z

1

I can't see if you have attempted the:

@Html.RenderPartial()

ActionMethod (see MSDN)

making yours look similar to:

View:

@Html.RenderPartial("_LoginPartial","Account")

Controller:

(within AccountController)

public ActionResult _LoginPartial()
{
    ApplicationUser user = null;
    ManageUserViewModel model = null;
    string userID = User.Identity.GetUserId() ?? String.Empty;
    if (!String.IsNullOrEmpty(userID))
    {
        user = UserManager.FindById(userID);
        model = new ManageUserViewModel();
        model.IsAdmin = user.IsAdmin;
    }
    return PartialView(model);
}

Other than that, I would suggest removing the underscore and see if you can run it instead (since it is a partial view, I don't think it will be navigateable anyway)

edited Nov 10, 2014 at 15:14

answered Nov 10, 2014 at 15:07

jbutler483

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2 Comments

jbutler483 Over a year ago

@Killercam It's what I use to open Partial views, anyway. I've never heard of/used {areas =...} ever so not entirely sure that's required.

MoonKnight Over a year ago

One thing is that RenderPartial returns void, so you can just put it "in place of" this @Html.Action method...

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