MVC 6 VNext how to set HtmlFieldPrefix?

Question

My view is divided into partial views. Hence, at the time of submission my model isn\'t reconstructed correctly.

The page view displays employee data, where Employe

Answer 1

Here is the solution,

namespace Website1.Extensions
{
    public static class HtmlHelper
    {
        public static IHtmlContent Partial(this IHtmlHelper htmlHelper, string partialViewName, object model, string prefix)
        {
            var viewData = new ViewDataDictionary(htmlHelper.ViewData);
            var htmlPrefix = viewData.TemplateInfo.HtmlFieldPrefix;
            viewData.TemplateInfo.HtmlFieldPrefix += !Equals(htmlPrefix, string.Empty) ? $".{prefix}" : prefix;
            return htmlHelper.Partial(partialViewName, model, viewData);
        }

        public static Task<IHtmlContent> PartialAsync(this IHtmlHelper htmlHelper, string partialViewName, object model, string prefix)
        {
            var viewData = new ViewDataDictionary(htmlHelper.ViewData);
            var htmlPrefix = viewData.TemplateInfo.HtmlFieldPrefix;
            viewData.TemplateInfo.HtmlFieldPrefix += !Equals(htmlPrefix, string.Empty) ? $".{prefix}" : prefix;
            return htmlHelper.PartialAsync(partialViewName, model, viewData);
        }
    }
}

employee.cshtml

@using Website1.Extensions;
@model Employee
@Html.Partial("_contactInfo", Model.ContactInfo, nameof(Model.ContactInfo))

_contactInfo.cshtml

@using Website1.Extensions;
@model ContactInfo
@Html.Partial("_phoneInfo", Model.PhoneInfo, nameof(Model.PhoneInfo))

_phoneInfo.cshtml

@model PhoneInfo
<input asp-for="@Model.Contact1" />

Answer 2

If you only need this once this would be the quick solution for the _contactInfo partial view

employee.cshtml

   @{
        var viewData = new ViewDataDictionary(ViewData);
        viewData.TemplateInfo.HtmlFieldPrefix = "ContactInfo";
    }

    <partial name="_conctactInfo" model="Model.ContactInfo" view-data="@viewData"/>