How to write an Edit Action - entity-framework

Question

I am trying to come up with an edit action. See below for what i have so far.
ViewModel:
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Web;
using System.Web.Mvc;
namespace GlobalUnitedSC.WebUI.Models
{
public sealed class CreateMensPlayerViewModel
{
//Player profile starts here
[HiddenInput(DisplayValue=false)]
public int MensTeamId { get; set; }
[HiddenInput(DisplayValue = false)]
public int PlayerId { get; set; }
[Required]
public string Name { get; set; }
[DataType(DataType.Date)]
public DateTime? BirthDate { get; set; }
[Required]
public string Position { get; set; }
public int ShirtNumber { get; set; }
[DataType(DataType.Date)]
public DateTime? Joined { get; set; }
public string Country { get; set; }
[DataType(DataType.MultilineText)]
public string Description { get; set; }
public byte[] ImageData { get; set; }
[HiddenInput(DisplayValue = false)]
public string ImageMimeType { get; set; }
[DataType(DataType.EmailAddress)]
public string EmailAddress { get; set; }
[DataType(DataType.PhoneNumber)]
public string PhoneNumber { get; set; }
//Player Statistics starts here
public int Games { get; set; }
public int Goals { get; set; }
public int Assists { get; set; }
public int TotalShots { get; set; }
public int ShotsOnGoal { get; set; }
public int FoulsDrawn { get; set; }
public int FoulsCommitted { get; set; }
public int Saves { get; set; }
public int BlueCards { get; set; }
public int YellowCards { get; set; }
public int RedCards { get; set; }
}
}
Create Actions:
[HttpGet]
public ActionResult Create(int mensTeamId)
{
new CreateMensPlayerViewModel {MensTeamId = mensTeamId};
return View();
}
[HttpPost]
public ActionResult Create(CreateMensPlayerViewModel viewModel, HttpPostedFileBase image)
{
if (ModelState.IsValid)
{
var mensTeam = _dataSource.MensTeams.Single(t => t.Id == viewModel.MensTeamId);
var mensPlayer = new MensPlayer
{
Name = viewModel.Name,
BirthDate = viewModel.BirthDate,
Position = viewModel.Position,
ShirtNumber = viewModel.ShirtNumber,
Joined = viewModel.Joined,
Country = viewModel.Country,
Description = viewModel.Description,
EmailAddress = viewModel.EmailAddress,
PhoneNumber = viewModel.PhoneNumber,
Games = viewModel.Games,
Goals = viewModel.Goals,
Assists = viewModel.Assists,
TotalShots = viewModel.TotalShots,
ShotsOnGoal = viewModel.ShotsOnGoal,
FoulsDrawn = viewModel.FoulsDrawn,
FoulsCommitted = viewModel.FoulsCommitted,
Saves = viewModel.Saves,
BlueCards = viewModel.BlueCards,
YellowCards = viewModel.YellowCards,
RedCards = viewModel.RedCards
};
mensTeam.MensPlayers.Add(mensPlayer);
_dataSource.Save();
TempData["message"] = string.Format("{0} has been saved", mensPlayer.Name);
return RedirectToAction("detail", "MensTeam", new {id = viewModel.MensTeamId});
}
return View(viewModel);
}
HttpGet Edit Action
[HttpGet]
public ActionResult Edit (int id)
{
var mensPlayer = _dataSource.MensPlayers.FirstOrDefault(p => p.Id == id);
return View(mensPlayer);
}
Now could anyone please help me with the HttpPost Edit action, preferably one based on the model class mentioned above?
I was hoping it has something to do with the line below, if this creates a new player, what could i write to edit that player?
var mensPlayer = new MensPlayer {}

Answer 1

Since it's a post the method is kind of equal to your create-method. You will receive a MensPlayer as a parameter.
Than you check if the Model is valid (validation etc.) and flag the entry as modified and save the changes.
[HttpPost]
public ActionResult Edit(MyModel myModel)
{
if (ModelState.IsValid)
{
DbContext.Entry(myModel).State = EntityState.Modified;
DbContext.SaveChanges();
return RedirectToAction("Index");
}
return View(myModel);
}
DBContext
public class ModelContext : DbContext
{
public DbSet<MyModel> MyModelSet{ get; set; }
}
More info about DBContext.

Answer 2

With help of Slauma in the comments in the repost or extension of this question at:
Repost/Extension
This is what he suggested i do and it works.
Add to IDataSource Interface:
void Update(MensPlayer mensPlayer);
Update Implemented in Db class:
void IDataSource.Update(MensPlayer mensPlayer)
{
Entry(mensPlayer).State = EntityState.Modified;
}
Edit Action:
[HttpPost]
public ActionResult Edit(MensPlayer mensPlayer)
{
if (ModelState.IsValid)
{
//Save Player
_dataSource.Update(mensPlayer);
_dataSource.Save();
TempData["message"] = string.Format("{0} has been saved", mensPlayer.Name);
return RedirectToAction("Detail", "MensPlayer", new {id = mensPlayer.Id});
}
return View(mensPlayer);
}
And Just like that all works fine, although i was under the assumption that i would implement Update to the whole DbSet like i did with Save.