Controller.cs

using System.Security.Permissions;
using System.Web.Mvc;
using MyStory.Logic.Security;
using MyStory.Web.Models;
using MyStory.Web.Models.Clients;

namespace MyStory.Web.Areas.Agency.Controllers
{
    public partial class ClientController
    {
        [HttpGet]
        [PrincipalPermission(SecurityAction.Demand, Role = UserRoles.AgencyUser)]
        public virtual ActionResult Details(
            string agencyKey,
            long? personUniqueId,
            RequestParameters requestParameters = null)
        {
            var strategy = GetTabStrategy<DetailsTabStrategy>(agencyKey, personUniqueId, requestParameters);
            if (strategy.Parameters.IsNew())
            {
                strategy.Parameters.SourcePageName = MVC.Agency.Referrals.Name;
                strategy.Parameters.SourcePageUrl = new UrlHelper(Request.RequestContext)
                    .Action(MVC.Agency.Referrals.SearchAndLink(strategy.Parameters.AgencyKey,
                                                               strategy.Parameters.ReferralUniqueId.Value));
            }
            return View(MVC.Agency.Client.Views.Details, strategy.GetViewModel(ViewBag));
        }

        [HttpPost]
        [ActionName("Details")]
        [Button(ButtonName = "SaveButton")]
        [PrincipalPermission(SecurityAction.Demand, Role = UserRoles.AgencyUser)]
        public virtual ActionResult DetailsSave(
            string agencyKey,
            long? personUniqueId,
            RequestParameters requestParameters,
            ClientDetailsViewModel viewModel)
        {
            return GetTabStrategy<DetailsTabStrategy>(agencyKey, personUniqueId, requestParameters)
                       .SaveViewModel(viewModel, ModelState, ViewBag)
                       ? (ActionResult) RedirectToAction(
                           MVC.Agency.Client.Details(agencyKey, personUniqueId, requestParameters))
                       : View(viewModel);
        }

        [HttpPost]
        [ActionName("Details")]
        [Button(ButtonName = "ShelveButton")]
        [PrincipalPermission(SecurityAction.Demand, Role = UserRoles.AgencyUser)]
        public virtual ActionResult DetailsSaveAndShelve(
            string agencyKey,
            long? personUniqueId,
            RequestParameters requestParameters,
            ClientDetailsViewModel viewModel)
        {
            return GetTabStrategy<DetailsTabStrategy>(agencyKey, personUniqueId, requestParameters)
                       .SaveViewModel(viewModel, ModelState, ViewBag)
                       ? (ActionResult) RedirectToAction(
                           MVC.Agency.Client.ClientHub(agencyKey, personUniqueId, requestParameters))
                       : View(viewModel);
        }

        [HttpPost]
        [ActionName("Details")]
        [Button(ButtonName = "NextTabButton")]
        [PrincipalPermission(SecurityAction.Demand, Role = UserRoles.AgencyUser)]
        public virtual ActionResult DetailsSaveAndNextTab(
            string agencyKey,
            long? personUniqueId,
            RequestParameters requestParameters,
            ClientDetailsViewModel viewModel)
        {
            return GetTabStrategy<DetailsTabStrategy>(agencyKey, personUniqueId, requestParameters)
                       .SaveViewModel(viewModel, ModelState, ViewBag)
                       ? (ActionResult) RedirectToAction(
                           tabCoordinator.GetTabByName(Request.Form["NextTabButton"], requestParameters))
                       : View(viewModel);
        }

        [HttpPost]
        [ActionName("Details")]
        [Button(ButtonName = "ReturnToSourceButton")]
        [PrincipalPermission(SecurityAction.Demand, Role = UserRoles.AgencyUser)]
        public virtual ActionResult DetailsSaveAndReturnToSource(
            string agencyKey,
            long? personUniqueId,
            RequestParameters requestParameters,
            ClientDetailsViewModel viewModel)
        {
            return GetTabStrategy<DetailsTabStrategy>(agencyKey, personUniqueId, requestParameters)
                       .SaveViewModel(viewModel, ModelState, ViewBag)
                       ? (ActionResult) Redirect(requestParameters.SourcePageUrl)
                       : View(viewModel);
        }
    }
}

MVC REST Registration.cs

            #region Clients

            context.MapRoute(
                "agency_clients",
                "{agencyKey}/people/clients",
                new
                    {
                        controller = MVC.Agency.Client.Name,
                        action = MVC.Agency.Client.ActionNames.Index
                    }
                );

            context.MapRoute(
                "agency_client_education_and_employment",
                "{agencyKey}/people/clients/{personUniqueId}/education-and-employment",
                new
                    {
                        controller = MVC.Agency.Client.Name,
                        action = MVC.Agency.Client.ActionNames.EducationAndEmployment
                    },
                new { personUniqueId = @"\d+" });

            context.MapRoute(
                "agency_client_health",
                "{agencyKey}/people/clients/{personUniqueId}/health",
                new
                    {
                        controller = MVC.Agency.Client.Name,
                        action = MVC.Agency.Client.ActionNames.Health
                    },
                new { personUniqueId = @"\d+" });

            context.MapRoute(
                "agency_client_assessment_treatment",
                "{agencyKey}/people/clients/{personUniqueId}/assessment-treatment",
                new
                {
                    controller = MVC.Agency.Client.Name,
                    action = MVC.Agency.Client.ActionNames.AssessmentTreatment
                },
                new { personUniqueId = @"\d+" });

            context.MapRoute(
                "agency_client_assessment_treatment_history",
                "{agencyKey}/people/clients/{personUniqueId}/assessment-treatment/history",
                new
                    {
                        controller = MVC.Agency.Client.Name,
                        action = MVC.Agency.Client.ActionNames.AssessmentTreatmentHistory
                    },
                new { personUniqueId = @"\d+" });

            context.MapRoute(
                "agency_client_assessment_treatment_history_item",
                "{agencyKey}/people/clients/{personUniqueId}/assessment-treatment/history/{healthIssueUniqueId}",
                new
                    {
                        controller = MVC.Agency.Client.Name,
                        action = MVC.Agency.Client.ActionNames.AssessmentTreatmentHistoryItem
                    },
                new
                    {
                        personUniqueId = @"\d+",
                        healthIssueUniqueId = @"\d+"
                    });

            context.MapRoute(
                "agency_client_identity",
                "{agencyKey}/people/clients/{personUniqueId}/identity",
                new
                    {
                        controller = MVC.Agency.Client.Name,
                        action = MVC.Agency.Client.ActionNames.Identity
                    },
                new { personUniqueId = @"\d+" });

            context.MapRoute(
                "agency_client_address_history",
                "{agencyKey}/people/clients/{personUniqueId}/address-history",
                new
                    {
                        controller = MVC.Agency.Client.Name,
                        action = MVC.Agency.Client.ActionNames.AddressHistory
                    },
                new { personUniqueId = @"\d+" });

            context.MapRoute(
                "agency_client_hub",
                "{agencyKey}/people/clients/{personUniqueId}/client-hub",
                new
                    {
                        controller = MVC.Agency.Client.Name,
                        action = MVC.Agency.Client.ActionNames.ClientHub
                    },
                new { personUniqueId = @"\d+" });

            context.MapRoute(
                "agency_client_details",
                "{agencyKey}/people/clients/{personUniqueId}/details",
                new
                    {
                        controller = MVC.Agency.Client.Name,
                        action = MVC.Agency.Client.ActionNames.Details
                    },
                new { personUniqueId = @"\d+" });

            context.MapRoute(
                "agency_client_details_new",
                "{agencyKey}/people/clients/new/details",
                new
                    {
                        controller = MVC.Agency.Client.Name,
                        action = MVC.Agency.Client.ActionNames.Details
                    });

            context.MapRoute(
                "agency_client_root",
                "{agencyKey}/people/clients/{personUniqueId}",
                new
                    {
                        controller = MVC.Agency.Client.Name,
                        action = MVC.Agency.Client.ActionNames.Details
                    },
                new { personUniqueId = @"\d+" });

            context.MapRoute(
                RouteNames.Clients.NewReferral,
                "{agencyKey}/people/clients/{personUniqueId}/referrals/new",
                new
                    {
                        controller = MVC.Agency.ClientReferrals.Name,
                        action = MVC.Agency.ClientReferrals.ActionNames.NewReferral
                    },
                new { personUniqueId = @"\d+" });

            #endregion