Hello,

I've been having an error since upgrading to 7.4.X (from 7.3.X). I have a SurfaceController called "Common" which basically is used to display the menu recursively until X levels have been reached.

This worked in 7.3.X:

PagesList (Partial)

<ul class="side-nav" role="navigation">
            @{var children = themeHomePage.Children.Where("Visible");}
            @foreach (var child in children)
            {
                @Html.Action("DisplayMenuNodes", "Common",
                    new {
                        currentNode = child,
                        currentPageId = Model.Id,
                        currentLevel = 0,
                        maxLevel = 1,
                        displaySection = true
                    });
            }
    </ul>

CommonController (SurfaceController)

[ChildActionOnly]
        public ActionResult DisplayMenuNodes(
            IPublishedContent currentNode, 
            int currentPageId, 
            int currentLevel, 
            int maxLevel,
            bool displaySection)
        {
            if (maxLevel != -1 && currentLevel >= maxLevel)
            {
                return null;
            }

            return PartialView("MenuNodes", new MenuNodesModel(
                currentNode, 
                currentPageId, 
                currentLevel, 
                maxLevel,
                displaySection));
        }

MenuNodes (PartialView)

@model OngletFoncier.Models.MenuNodesModel

@{
    if (Model.Page.DocumentTypeAlias == "Section" 
        && Model.Page.Children.Where("Visible").Any())
    {
        if (Model.DisplaySection) { 
        <li class="header">
            <a href="javascript:void(0)">
                @Model.Page.GetPropertyValue("title")
            </a>
            @if (Model.MaxLevel == -1 || Model.CurrentLevel + 1 <= Model.MaxLevel)
            {
                <ul>
                    @foreach (var child in Model.Page.Children.Where("Visible"))
                    {
                        @Html.Action("DisplayMenuNodes",
                    "Common",
                    new
                    {
                        currentNode = child,
                        currentPageId = Model.CurrentPageId,
                        currentLevel = Model.CurrentLevel,
                        maxLevel = Model.MaxLevel,
                        displaySection = Model.DisplaySection
                    });
                    }
                </ul>
            }
        </li>
        }
        else
        {
            foreach (var child in Model.Page.Children.Where("Visible"))
            {
                @Html.Action("DisplayMenuNodes",
                    "Common",
                    new
                    {
                        currentNode = child,
                        currentPageId = Model.CurrentPageId,
                        currentLevel = Model.CurrentLevel,
                        maxLevel = Model.MaxLevel,
                        displaySection = Model.DisplaySection
                    });
            }
        }
    }
    else if (Model.Page.DocumentTypeAlias.IndexOf("Folder") == -1)
    {
        var umbracoHelper = new UmbracoHelper(UmbracoContext.Current);

        <li role="menuitem" class="link@(Model.CurrentPageId == Model.Page.Id ? " current" : String.Empty)">
            <a href="@Model.Page.Url">
                @if (Model.Page.DocumentTypeAlias == "ReusableContentPage" && Model.Page.GetPropertyValue("title") == "")
                {
                    var reusableContent = umbracoHelper.Content(Model.Page.GetPropertyValue<int>("RCNodeId"));

                    @(reusableContent.GetPropertyValue("title"))
                }
                else
                {
                    @(Model.Page.GetPropertyValue("title"))
                }
            </a>
            @if (Model.CurrentPageId == Model.Page.Id)
            {
                <span class="offscreen"> - Page courante.</span>
            }
            @if (Model.Page.Children.Where("Visible").Any()
                && (Model.MaxLevel == -1 || (Model.CurrentLevel + 1 < Model.MaxLevel)))
            {
                <ul>
                    @foreach (var child in Model.Page.Children.Where("Visible"))
                    {
                        @Html.Action("DisplayMenuNodes",
                        "Common",
                        new
                        {
                            currentNode = child,
                            currentPageId = Model.CurrentPageId,
                            currentLevel = Model.CurrentLevel + 1,
                            maxLevel = Model.MaxLevel,
                            displaySection = Model.DisplaySection
                        });
                    }
                </ul>
            }
        </li>
    }
}

Yet in Umbraco 7.4.X, I get this error in PagesList (@Html.Action("DisplayMenuNodes", "Common",{...} line):

Détails de l'exception: Umbraco.Web.Mvc.ModelBindingException: Cannot bind source type System.String to model type Umbraco.Core.Models.IPublishedContent.

What changed that it wouldn't work?