The document discusses ASP.NET MVC and REST. It provides an overview of ASP.NET MVC concepts like MVC patterns, strong typing, routing and actions. It then contrasts ASP.NET MVC with traditional Web Forms approaches. The document also defines REST as a resource-oriented architectural style that relies on HTTP verbs and embraces the web standard. It shows how ASP.NET MVC supports RESTful principles and features like action attributes, filters and custom action results that help build RESTful services.

1. Daniel Fisher – daniel.fisher@devcoach.com
MVC den REST geben

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3. Daniel Fisher
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4. Efficient Communication…

5. Agenda
• ASP.NET MVC
• REST
• REST with ASP.NET MVC
• Summary

6. WHAT IS ASP.NET MVC

8. Büttenrede
Der ViewState is ne falsche Sache - Mir
wolle was ganz and'res mache!
Code-Behind mit 11 tausend Lines of
Code - Das ist doch der Maintenance-
Tod!
Post-Back und Controls im Web, dass
kannst'e doch nich' testen, Depp!

9. Concepts
• Nice URLs & Routing
• Process over „just add a Form“
• Loads of naming conventions
• Code, Code, Code
• As strongly typed as possible!
• Once build, forever used…

10. Nice URLs
• Vs

11. Process

12. The MVC Pattern
• The request hits the controller
• Loads the model
• Returns the view to return to the client
Controller
Model
View

13. Strongly Typed
<%= DisplayFor(m=>m.Title) %>
Instead of
<%# Eval("Title") %>

14. Concepts cont.
• No Code-Behind for ASPXs
• No Postbacks
• No Viewstate
• No controls out of Redmond!

16. IIS sends Response
ViewResult.Render
ViewResult locates
corresponding View
ActionResult.
ExecuteResult
ActionResult builds
ViewData / Model
Controller.{Action}Controller.ExecuteIControllerFactory
IHttpHandler.
ProcessRequest
MvcRouteHandler
(IHttpHandler)
IRouteHandler.
GetHttpHandler
URLRoutingModule
IIS takes Request

17. Defining Routes
routes.Ignore("*.svc");
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute(
"Default", // Route name
"{controller}/{action}/{id}", // URL with parameters
new
{
controller = "Home",
action = "Index",
id = ""
});

18. Actions
public ActionResult Index()
{
return View();
}

19. Passing Data
public ActionResult Index()
{
ViewData["Message"] =
"Welcome to ASP.NET MVC!";
return View();
}

20. Passing Typed Data
public ActionResult Index()
{
var p = new Person();
return View(p);
}

21. Model Binder
public ActionResult Save(Person p)
{
// No need to cope with Form/QueryString
return View();
}

22. ASPX Views
Untyped
<%@ Page Inherits="ViewPage<dynamic>" %>
Typed
<%@ Page Inherits="ViewPage<Product>" %>

23. Event-driven RESTful
ASP.NET RoR, MonoRail, ASP.NET
MVC
Stateful Stateless
Heavyweight Lightweight
Overcomes HTTP Embraces HTTP
Widgets HTML
3rd-party controls DIY
Design view Code view
GUI Web page
Postbacks POSTs
Web 1.0 (uncool) Web 2.0 (cool)

24. WHAT IS REST?

26. What is REST?
• A term coined by Roy Fielding
• Style of architecture
• Resource based
• Cacheable
• NOT SOAP, NOR SESSION
• Web Standards!

27. What is REST
• Every Resource has a unique URI
– But it's NOT about CRUD!
• Relies on HTTP verbs
• Deliver Content as Requested

29. Action Attributes
• HttpPost, HttpGet, HttpDelete,
RequiresHttps
• Authorize
• ...

30. Action Filters
public class MyFilter
: ActionFilterAttribute
{
public override void OnActionExecuting(
ActionExecutingContext filterContext)
{
// Your code here…
}
}

31. Action Results
public class ModelResult<T>
: ActionResult
{
public override void ExecuteResult(
ControllerContext context)
{
var r = context.HttpContext.Response;
r.Write(…);
}
}

32. Summary
• ASP.NET MVC offers an alternative to
WCF WebHTTP features
– It's more Web
• Fully integrated into a web application
– It's less Services
• No other protocols
• No WSDL
• No Proxies