Asp.Net MVC controller pattern for typical CRUD actions

gistfile1.cs

namespace {{lcControllersNameSpace}}
{
    [Authorize]
    public class {{lcClassPlural}}Controller : {{lcAppBaseController}}
    {
        [HttpGet, Route("{{lcClassPlural}}")]
        public ActionResult List()
        {
            var model = CreateViewModel<{{lcViewModelClass}}>();

            model.UserIsAdmin = User.IsInRole("Administrator");

            var {{lcLocalBoRef}} = new {{lcBusinessObjectClass}}();

            model.{{lcClassPlural}} = {{lcLocalBoRef}}.GetAll{{lcClassPlural}}().ToList();

            return View(model);
        }

        /// <summary>
        /// Navigates to an entry screen to create a new {{lcClass}}
        /// </summary>
        /// <returns></returns>
        [Authorize(Roles = "Administrator")]
        [HttpGet, Route("{{lcClassPlural}}/New")]
        public ActionResult New()
        {
            return Show(-1);
        }

        [HttpGet, Route("{{lcClassPlural}}/{Id}")]
        [Route("{{lcClassPlural}}/Show/{Id}")]
        public ActionResult Show(int? Id)
        {
            var model = CreateViewModel<{{lcViewModelClass}}>();

            model.UserIsAdmin = User.IsInRole("Administrator");
            
            if (id == null)
            {
                var errorModel = new ErrorViewModel();
                errorModel.Message = "Invalid {{lcClass}} ID reference passed.";
                return View("Error", errorModel);
            }

            var {{lcLocalBoRef}} = new {{lcBusinessObjectClass}}();
            {{lcClass}} {{lcClass}} = null;

            if (Id < 0) // Creating a new one
                {{lcClass}} = {{lcLocalBoRef}}.NewEntity();
            else
            {
                {{lcClass}} = {{lcLocalBoRef}}.Load(Id);
                if ({{lcClass}} == null)
                {
                    var errorModel = new ErrorViewModel();
                    errorModel.Message = "Failed to load {{lcClass}} by passed value. " + {{lcLocalBoRef}}.ErrorMessage;
                    return View("Error", errorModel);
                }
                else
                    model.PageTitle = "{{lcClass}} Page Title";
            }

            model.{{lcClass}} = {{lcClass}};

            LoadSelectLists(model);

            return View("Show", model);

        }

        [HttpPost, Route("{{lcClassPlural}}/Save")]
        public ActionResult Save({{lcViewModelClass}} model)
        {
            if (model.{{lcClass}} == null)
                return View("Show", model);

            InitializeViewModel(model);
            
            model.UserIsAdmin = User.IsInRole("Administrator");

            {{lcBusinessObjectClass}} {{lcLocalBoRef}} = new {{lcBusinessObjectClass}}();
            bool new{{lcClass}} = false;

            // Load the {{lcClass}} entity record from the database...
            {{lcClass}} {{lcLocalEntityRef}} = {{lcLocalBoRef}}.Load(model.{{lcClass}}.ID);

            // If we weren't able to load by the ID from page properties, then we assume we are creating a new {{lcClass}}.
            if ({{lcLocalEntityRef}} == null)
            {
                {{lcLocalEntityRef}} = {{lcLocalBoRef}}.NewEntity();
                new{{lcClass}} = true;
            }

            // Store this value as loaded from DB so we can restore it after applying values from Model Binder.
            string _{{lcKeyField}} = {{lcLocalEntityRef}}.{{lcKeyField}};

            // Set the {{lcClass}} instance on <{{lcViewModelClass}}> to the loaded {{lcClass}} entity
            model.{{lcClass}} = {{lcLocalEntityRef}};

            // Apply values from the page viewmodel to the loaded {{lcClass}} to apply user's changes
            this.TryUpdateModel<{{lcViewModelClass}}>(model);

            if (!new{{lcClass}})
                {{lcLocalEntityRef}}.{{lcKeyField}} = _{{lcKeyField}}; // Restore this with what we read from the DB, because we will not allow the values on the viewModel
                                                                      // to overwrite this field.

            {{lcLocalBoRef}}.AutoValidate = true; // Will call validate method on BO when Saving to chack for valid data

            //-- Attempt a Save, (OnValidate method on BO will be called)
            if (!model.HasValidationErrors)
            {
                if (!{{lcLocalBoRef}}.Save())
                {
                    ErrorDisplay.ShowError("Errors:");
                    ErrorDisplay.AddMessages({{lcLocalBoRef}}.ValidationErrors); // Validation error messages added by {{lcBusinessObjectClass}}.OnValidate() method.
                    model.HasValidationErrors = true;
                    model.ToasterErrorMessage = "Error saving {{lcClass}} record!";
                }
                else
                {
                    // Need to update the posted var data for {{lcClass}}.ID in case we have created a new {{lcClass}} so the http var will have the newly assigned ID
                    ModelState.SetModelValue("{{lcClass}}.ID", new ValueProviderResult({{lcLocalEntityRef}}.ID, {{lcLocalEntityRef}}.ID.ToString(), CultureInfo.CurrentCulture));
                    if (new{{lcClass}})
                        model.ToasterMessage = "New {{lcClass}} record created.";
                    else
                        model.ToasterMessage = "{{lcClass}} record updated.";
                }
            }

            LoadSelectLists(model);

            return View("Show", model);

        }

        public void LoadSelectLists({{lcViewModelClass}} viewModel)
        {
        }



    }

}