Model View Dispatcher (cqrs over mvc)

Good all the time of day, in this article I want to highlight another component of the library Incoding Framework.
Model View Dispatcher (MVD) - allows you to get rid of redundant code (namely, asp.net mvc controller) and simplify project navigation, reducing the number of abstractions between client and server code.

Habré has several articles on IML and CQRS , which are part of the framework

Introducing IML
Incoding CQRS
note: the article was published, but at that time there were problems with the account on the habr and it passed unnoticed
IML vs AngularJs
note: the article has been criticized (objective and subjective)
IMl vs AngularJs Response
note: can not be called a success, but a little better

MVD appeared in some articles, but as part of an example demonstrating the capabilities of IML, so I decided to tell about it separately, but first things first ...

What for?

Consider a scenario using asp.net mvc + cqrs

Controller

public ActionResult Details(GetUserDetailsQuery query)
{
    var model = dispatcher.Query(query);
    return Json(model);
}

: action binding query Dispatcher Json

View

$.get('@Url.Action("Details","Controller")',callback)

: Query , Action

controller «» Mediator ( ), Interface Generic, , , Controller/Action.

Model View Dispatcher (MVD) — Command/Query «» asp.net mvc. , MVD

$.get('@Url.Dispatcher().Query(new GetUserDetailsQuery()).AsJson()',callback)

Action
, (go to delcaration )
URL (visual studio intelisence, refactor utilities)

MVC ???

, MVD :

DispatcherController ( 1.1 nuget), DispatcherControllerBase

public class DispatcherController : DispatcherControllerBase
{        
    public DispatcherController()
   : base(typeof(T).Assembly)
    {    }    
}

: Assembly Command/Query

DispatcherControllerBase (Actions):

Query(string incType, string incGeneric, bool? incValidate)
Render(string incView, string incType, string incGeneric)
Push(string incType, string incGeneric)
Composite(string incTypes)
QueryToFile(string incType, string incGeneric, string incContentType, string incFileDownloadName)

url, Push command

Url.Action("Push", "Dispatcher", new  { incType = typeof(Command).Name } )

DSL (domain specific language)

Url.Dispatcher().Push(new Command())

: ( ), ( ..)

MVD IDispatcher, IoCFactory ( StructureMap )
ActionResult IncodingResult, JSON
{ success: true/false , data:something/null , redirectTo:url/null }

: MVD asp.net mvc, ( generic) Controller, httphandler http .

?

MVD , - asp.net mvc:
: GitHub

Push

Url.Dispatcher().Push(new AddUserCommand
                                          {
                               Id = "59140B31-8BB2-49BA-AE52-368680D5418A",
                               Name = "Vlad"
                                          })

Push generic

Url.Dispatcher().Push(new AddEntityCommand<T>())

omposite

Url.Dispatcher()
     .Push(new AddUserCommand { Id = "1", Name = "Name" })
     .Push(new ApproveUserCommand { UserId = "2" })

Query as json

Url.Dispatcher()
     .Query(new GetCurrentDtQuery())
     .AsJson()

Query generic

Url.Dispatcher()
     .Query(new GetTypeNameQuery<T>())
     .AsJson()

Query as view

Url.Dispatcher()
     .Query(new GetUserQuery())
     .AsView("~/Views/Home/User.cshtml")

: View ( asp.net mvc Controller) , .

Query as file

<a href="@Url.Dispatcher().Query(new GetFileQuery()).AsFile(incFileDownloadName: "framework")">Download</a>

: QueryBase<byte[]> Query

Model as view

Url.Dispatcher()
     .Model(new GetUserQuery.Response
               {
              Id = "2",
              Name = "Incoding Framework"
              })
     .AsView("~/Views/Home/User.cshtml")

View

Url.Dispatcher().AsView("~/Views/Home/Template.cshtml")

MVD DispatcherController ( ), CQRS Command/Query Url.Dispatcher ( , ) url, , IML.

Post

@(Html.When(JqueryBind.Change)
      .AjaxPost(Url.Dispatcher().Push<AddAcoGroupCommand>(new {Value = Selector.Jquery.Self() } ))
      .OnSuccess(dsl => dsl.Utilities.Window.Alert("Success"))
      .AsHtmlAttributes()
      .ToCheckBox(true))

: , ( Value AddAcoGroupCommand exception) .

Post form

@model AddAcoGroupCommand
<form action="@Url.Dispatcher().Push(new AddAcoGroupCommand())">
    @Html.HiddenFor(r=>r.Id)
    <input type="submit"/>
</form>

Render View

@(Html.When(JqueryBind.InitIncoding)
      .AjaxGet(Url.Dispatcher().AsView("~/Views/Patient/BenefitListControl.cshtml"))
      .OnSuccess(dsl => dsl.Self().Core().Insert.Html())
      .AsHtmlAttributes()
      .ToDiv())

: template

var urlTmpl  = Url.Dispatcher().AsView("~/Views/Medication/MedicationTmpl.cshtml");
dsl.Self().Core().Insert.WithTemplateByUrl(urlTemplate).Append();

Render model

@(Html.When(JqueryBind.InitIncoding)
      .AjaxGet(Url.Dispatcher()
      .Model( new BenefitModel()
                  {
                          GroupName = Selector.Incoding.QueryString<BenefitModel>(r=>r.GroupName),
                          IsPrimary = true
                  })
      .AsView("~/Views/Patient/BenefitListControl.cshtml"))
      .OnSuccess(dsl => dsl.Self().Core().Insert.Html())
      .AsHtmlAttributes()
      .ToDiv())

: Selector ( ) url routes .

: Inc-todo

Action Attributes

(-́ ‎), , , :

DispatcherController
: , CRM
Dispatcher event — Command/Query , Action attributes.
: Action Command/Query

Incoding Framework ( js framework Server/Client ) MVD .

@(using(Html.When(JqueryBind.InitIncoding)      
                         .Direct()
                         .OnSuccess(dsl => dsl.Self().Core().Form.Validation.Parse())
                         .When(JqueryBind.Submit)
                         .PreventDefault()
                         .Submit()
                         .OnError(dsl => dsl.Self().Core().Form.Validation.Refresh())
                         .AsHtmlAttributes()
                         .ToBeginForm(Url.Dispatcher().Push(new AddUserCommand()))))
{
 @Html.TextBoxFor(r=>r.Name)
 @Html.ValidationMessageFor(r=>r.Name)
}

: , html helper
asp.net mvc Html.BeginForm ( iml html attributes), :

Submit ( ) ajax post (Url.Dispatcher().Push(new AddUserCommand())
(, ) Model State ( )

, Validation.Refresh Push dispatcher contoller

     if (!ModelState.IsValid)
        return IncodingResult.Error(ModelState)

     try
     {
         dispatcher.Push(composite);
         return IncodingResult.Success();
      }
      catch (IncWebException exception)
      {
                foreach (var pairError in exception.Errors)
                {
                    foreach (var errorMessage in pairError.Value)
                        ModelState.AddModelError(pairError.Key, errorMessage);
                }
                return IncodingResult.Error(ModelState)
      }

: - , Incoding Framework TryPush MVD push
catch IncWebException ( ModelState), exception global.asax.

?

, Incoding Framework , asp.net mvc

public ActionResult Add(AddUserCommand command)
{
    if (ModelState.IsValid)
        return View(command);

    return Execute(command);
}

ModelState , View, command (, Container , ), . :

,
html ( json), action, API ()

MVD Action, «» , . MVD IML, Selector routes, , - , «» (pure js) .
, MVD ( ) , Controller Action ( 5% — 10%) .

, ?

MVD 10-15% , , end point ( wcf endpoint)…

, ?

api :

Api — , /GetUsers?Active=true
Api — user ( Comment, City, State )
Api — , City /GetCities
Api — , , State ,
— , %sitename%-api-%current-version%
: %current-version%, ,

, mvd end-points

Api —
— appDomain/Dispatcher/Endpoints?
Api — , command/query
: , API, UI (user interface) (unit test , ) -

: , , , , .

: , API . , , , , - , .

P.S. ( beta) Incoding Framework nuget, . , ( bugtracker)

Break.If(r=>r.Is(()=>Selector.Jquery.Self()).And.Is(()=>"id".ToId()== 12)) // Old
Break.If(()=>Selector.Jquery.Self() && id.ToId() == 12) // New

EF, RavenDB, MongoDb ( command ORM github inc-todo-ravendb)

inDsl.Core().JQuery.Attributes.SetAttr(HtmlAttribute.Checked) // Now
inDsl.Attr.Set(HtmlAttr.Checked) // Future

: beta ( ) , ,

Source: https://habr.com/ru/post/221585/

All Articles