Two models in one view in ASP MVC 3

Question

I have 2 models   public class Person       public int PersonID   get  set        public string PersonName   get  set      public class Order       public int OrderID   get  set        public int TotalSum   get  set        I want edit objects of BOTH classes in SINGLE view  so I need something like    model  try2models Models Person  model  try2models Models Order   using Html BeginForm           Html EditorFor x   gt  x PersonID       Html EditorFor x   gt  x PersonName       Html EditorFor x  gt x OrderID       Html EditorFor x   gt  x TotalSum      This  of course  don t work  Only one  model  statement is allowed in a  cshtml file  May be there is some workaround

User · Answer

In fact there is a way to use two or more models on one view without wrapping them in a class that contains both.

Using Employee as an example model:

@model Employee

Is actually treated like.

@{ var Model = ViewBag.model as Employee; }

So the View(employee) method is setting your model to the ViewBag and then the ViewEngine is casting it.

This means that,

ViewBag.departments = GetListOfDepartments();
    return View(employee);

Can be used like,

            @model  Employee
        @{
                var DepartmentModel = ViewBag.departments as List<Department>;
        }

Essentially, you can use whatever is in your ViewBag as a "Model" because that's how it works anyway. I'm not saying that this is architecturally ideal, but it is possible.

User · Answer

Just create a single view Model with all the needed information in it  normaly what I do is create a model for every view so I can be specific on every view  either that or make a parent model and inherit it  OR make a model which includes both the views   Personally I would just add them into one model but thats the way I do it   public class xViewModel       public int PersonID   get  set        public string PersonName   get  set        public int OrderID   get  set        public int TotalSum   get  set        model project Models Home xViewModel   using Html BeginForm           Html EditorFor x   gt  x PersonID       Html EditorFor x   gt  x PersonName       Html EditorFor x   gt  x OrderID       Html EditorFor x   gt  x TotalSum

User · Answer

ok  everyone is making sense and I took all the pieces and put them here to help newbies like myself that need beginning to end explanation   You make your big class that holds 2 classes  as per  Andrew s answer   public class teamBoards      public Boards Boards get  set       public Team Team get  set       Then in your controller you fill the 2 models  Sometimes you only need to fill one  Then in the return  you reference the big model and it will take the 2 inside with it to the View               TeamBoards teamBoards   new TeamBoards              teamBoards Boards    from b in db Boards                                where b TeamId    id                                select b  ToList            teamBoards Team    from t in db Teams                               where t TeamId    id                           select t  FirstOrDefault      return View teamBoards     At the top of the View   model yourNamespace Models teamBoards   Then load your inputs or displays referencing the big Models contents     Html EditorFor m   gt  Model Board yourField    Html ValidationMessageFor m   gt  Model Board yourField      new    class    text-danger-yellow        Html EditorFor m   gt  Model Team yourField    Html ValidationMessageFor m   gt  Model Team yourField      new    class    text-danger-yellow       And       back at the ranch  when the Post comes in  reference the Big Class    public ActionResult ContactNewspaper teamBoards teamboards    and make use of what the model s  returned   string yourVariable   teamboards Team yourField    Probably have some DataAnnotation Validation stuff in the class and probably put if ModelState IsValid  at the top of the save edit block

User · Answer

you can t declare two model on one view  try to use Html Action  Person     YourController     amp  Html Action  Order     YourController      Good luck

User · Answer

Beside of one view model in asp net you can also make multiple partial views and assign different model view to every view  for example                 Layout   null              model Person        lt input type  text  asp-for  PersonID    gt       lt input type  text  asp-for  PersonName    gt    then another partial view Model for order model                 Layout   null               model Order        lt input type  text  asp-for  OrderID    gt       lt input type  text  asp-for  TotalSum    gt    then in your main view load both partial view by   lt partial name  PersonPartialView    gt   lt partial name  OrderPartialView    gt

User · Answer

Create a parent view model that contains both models   public class MainPageModel      public Model1 Model1 get  set       public Model2 Model2 get  set       This way you can add additional models at a later date with very minimum effort

User · Answer

Another option which doesn t have the need to create a custom Model is to use a Tuple lt        model Tuple lt Person Order gt    It s not as clean as creating a new class which contains both  as per Andi s answer  but it is viable

User · Answer

To use the tuple you need to do the following  in the view change the model to    model Tuple lt Person Order gt    to use  html methods you need to do the following i e    Html DisplayNameFor tuple   gt  tuple Item1 PersonId    or   Html ActionLink  Edit    Edit   new   id Model Item1 Id        Item1 indicates the first parameter passed to the Tuple method and you can use Item2 to access the second model and so on   in your controller you need to create a variable of type Tuple and then pass it to the view       public ActionResult Details int id   0                Person person   db Persons Find id           if  person    null                        return HttpNotFound                      var tuple   new Tuple lt Person  Order gt  person new Order              return View tuple           Another example   Multiple models in a view

User · Answer

If you are a fan of having very flat models  just to support the view  you should create a model specific to this particular view     public class EditViewModel     public int PersonID   get  set        public string PersonName   get  set        public int OrderID   get  set        public int TotalSum   get  set        Many people use AutoMapper to map from their domain objects to their flat views   The idea of the view model is that it just supports the view - nothing else  You have one per view to ensure that it only contains what is required for that view - not loads of properties that you want for other views

User · Answer

You can use the presentation pattern http   martinfowler com eaaDev PresentationModel html  This presentation  View  model can contain both Person and Order  this new class can be the model your view references

User · Answer

Another way that is never talked about is  Create a view in MSSQL with all the data you want to present  Then use LINQ to SQL or whatever to map it  In your controller return it to the view  Done

User · Answer

I hope you find it helpfull     i use ViewBag For Project and Model for task so in this way i am using two model in single view and in controller i defined viewbag s value or data   x000D   x000D  List lt tblproject gt  Plist   new List lt tblproject gt     x000D              Plist   ps getmanagerproject c  id   x000D   x000D              ViewBag projectList   Plist Select x   gt  new SelectListItem x000D                x000D                  Value   x ProjectId ToString    x000D                  Text   x Title x000D                  x000D   x000D   x000D    and in view tbltask and projectlist are my two diff models       IEnumerable lt SelectListItem gt  plist   ViewBag projectList       model List

[asp.net-mvc-3] Two models in one view in ASP MVC 3

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