Example Tridion Reference Implementation Data Controller

ExampleTRIDataController.cs

using Sdl.Web.Common.Interfaces;
using Sdl.Web.Common.Logging;
using Sdl.Web.Common.Models;
using Sdl.Web.Mvc.Controllers;
using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Reflection;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;

namespace Example.Site
{
    public class DataController : BaseController
    {
        public DataController(IContentProvider contentProvider, IRenderer renderer)
        {
            ContentProvider = contentProvider;
            Renderer = renderer;
        }
        public virtual ActionResult Data(string pageUrl, string region)
        {
            ModelType = ModelType.Page;
            var page = ContentProvider.GetPageModel(pageUrl);
            var data = new List<object>();
            if (page != null)
            {
                var model = ProcessModel(page, typeof(WebPage)) as WebPage;
                var regionToProcess = GetRegion(model, region);
                if (regionToProcess!=null)
                {
                    foreach (var cp in regionToProcess.Items)
                    {
                        ModelType = ModelType.Entity;
                        var entity = GetEntity(cp, Request.RequestContext.HttpContext);
                        if (entity != null)
                        {
                            data.Add(entity);
                        }
                    }
                }
                else
                {
                    data.Add(String.Format("No content found on page {0} in region {1}", pageUrl, region));
                }
            }
            else
            {
                data.Add(String.Format("No content found matching URL {0}", pageUrl));
            }
            return Json(data , JsonRequestBehavior.AllowGet);
        }

        private IRegion GetRegion(WebPage model, string region)
        {
            foreach (var regionName in model.Regions.Keys)
            {
                if (regionName.ToLower() == region.ToLower())
                {
                    return model.Regions[regionName];
                }
            }
            return null;
        }

        public object GetEntity(object entity, HttpContextBase context )
        {
            var mvcData = GetViewData(entity);
            var tempRequestContext = new RequestContext(context, new RouteData());
            tempRequestContext.RouteData.DataTokens["Area"] = mvcData.ControllerAreaName;
            tempRequestContext.RouteData.Values["controller"] = mvcData.ControllerName;
            tempRequestContext.RouteData.Values["area"] = mvcData.ControllerAreaName;
            BaseController controller = ControllerBuilder.Current.GetControllerFactory().CreateController(tempRequestContext, mvcData.ControllerName) as BaseController;
            if (controller!=null)
            {
                controller.ControllerContext = new ControllerContext(context, tempRequestContext.RouteData, controller);
                MethodInfo methodInfo = controller.GetType().GetMethod(mvcData.ActionName ?? "Entity");
                if (methodInfo != null)
                {
                    ParameterInfo[] parameters = methodInfo.GetParameters();
                    object[] parametersArray = new object[] { entity, 0 };
                    var result = methodInfo.Invoke(controller, parametersArray) as ViewResult;
                    return result.ViewData.Model;
                }
            }
            return null;
        }
    }
}