I seen many examples of edit actions in asp.net mvc 3 and that's why I confused. For example, how does work UpdateModel and TryUpdateModel methods? Or how to implement edit action if I want to update not all fields?
Could anyone give me a link about implementing edit action in asp.net 3?
Best way to update only desired fields is create separate view model for it. For example, imagine you've got user class like this
public class User
{
public int Id {get;set;}
public string UserName {get;set}
public bool IsAdmin {get;set;}
}
And suppose you do not wish to let user supply value for IsAdmin property. You create view model like this (no IsAdmin field)
public class EditUserViewModel
{
public int Id {get;set;}
public string UserName {get;set}
}
And the edit action pseudo something
public ActionResult Edit(EdituserViewModel model)
{
If(ModelState.IsValid)
{
User user = _repository.GetUser(model.Id);
user.UserName = model.UserName;
_repository.Update(user);
return RedirectToAction("Index");
}
return View(model);
}
This way, there's no possiblity to supply IsAdmin from client side. You may also want to take a look at AutoMapper and Jimmy Bogard's blog for mapping view models to domain models. Jimmy's got the post about using ViewModels and AutoMapper in asp.net mvc too.
