Base.cshtml

@model GridControl
@{
	string view = Model.Editor.Render != null ? Model.Editor.Render.ToString() : Model.Editor.View.ToString();

	view = view.ToLower().Replace(".html", ".cshtml");

	if (!view.Contains("/"))
	{
		view = "grid/editors/" + view;
	}
}

@Html.Partial(view, Model.JObject, new ViewDataDictionary(this.ViewData))

CallToAction.cshtml

@inherits ModulesViewPage<CallToActionCall>
@if (Model != null)
{
	using (Html.OptenModule(Model, "call-to-action -call-1"))
	{

		<div class="row flex-row">
			<div class="col-md-10 col-sm-8">
				@if (Model.Title.IsNullOrWhiteSpace() == false)
				{
					<h2 class="call-to-action-title text-uppercase">@Html.Raw(Model.Title)</h2>
				}

				@if (Model.Subtitle.IsNullOrWhiteSpace() == false)
				{
					<h2 class="call-to-action-subtitle text-uppercase">@Html.Raw(Model.Subtitle)</h2>
				}
			</div>
			<div class="col-md-2 col-sm-4">
				@if (Model.Links != null && Model.Links.Any())
				{
					<ul class="call-to-action-button-list">
						@foreach (var link in Model.Links)
						{
							<li>
								@link.AsLink(htmlAttributes: new { @class = "btn btn-primary btn-block call-to-action-button text-uppercase", target = link.Target })
							</li>
						}
					</ul>
				}

			</div>
		</div>
	}
}

ModuleGrid.cshtml

@inherits UmbracoViewPage<GridDataModel>

@if (Model != null && Model.Sections != null)
{
	foreach (var section in Model.Sections)
	{
		foreach (var row in section.Rows)
		{
			foreach (var area in row.Areas)
			{
				foreach (var control in area.Controls)
				{
					if (control != null && control.Editor != null && control.Editor.View != null)
					{
						@Html.Partial("grid/editors/base", control)
					}
				}
			}
		}
	}
}

ModulesViewPage.cs

using System;
using System.Web.Mvc;
using Umbraco.Core.Models.PublishedContent;
using Umbraco.Web.Mvc;

namespace Opten.Modules.Web.Mvc
{
	public abstract class ModulesViewPage<TModel> : UmbracoViewPage<TModel> where TModel:PublishedContentModel
	{
		// maps model
		protected override void SetViewData(ViewDataDictionary viewData)
		{
			viewData.Model = (TModel)Activator.CreateInstance(typeof(TModel), new object[] { viewData.Model });

			// set the view data
			base.SetViewData(viewData);
		}
	}
}