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Auto id generation is available for entities 

Previously the sample had work arounds to generate an id itself while adding a new item into a table. Removing the work around.
This commit is contained in:
Praburaj 2014-07-03 12:37:31 -07:00
parent 04de187189
commit 8c7bc1a9c8
3 changed files with 5 additions and 42 deletions
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10
src/MusicStore/Controllers/CheckoutController.cs
View File

@ -44,13 +44,7 @@ namespace MusicStore.Controllers
} }
else else
{ {
// TODO [EF] Swap to store generated identity key when supported order.Username = Context.User.Identity.GetUserName();
var nextId = db.Orders.Any()
? db.Orders.Max(o => o.OrderId) + 1
: 1;
order.OrderId = nextId;
order.Username = this.Context.User.Identity.GetUserName();
order.OrderDate = DateTime.Now; order.OrderDate = DateTime.Now;
//Add the Order //Add the Order
@ -82,7 +76,7 @@ namespace MusicStore.Controllers
// Validate customer owns this order // Validate customer owns this order
bool isValid = db.Orders.Any( bool isValid = db.Orders.Any(
o => o.OrderId == id && o => o.OrderId == id &&
o.Username == this.Context.User.Identity.GetUserName()); o.Username == Context.User.Identity.GetUserName());
if (isValid) if (isValid)
{ {

9
src/MusicStore/Controllers/StoreManagerController.cs
View File

@ -1,5 +1,4 @@
using Microsoft.AspNet.Mvc; using Microsoft.AspNet.Mvc;
using Microsoft.AspNet.Mvc.ModelBinding;
using Microsoft.AspNet.Mvc.Rendering; using Microsoft.AspNet.Mvc.Rendering;
using Microsoft.Data.Entity; using Microsoft.Data.Entity;
using MusicStore.Models; using MusicStore.Models;
@ -66,12 +65,6 @@ namespace MusicStore.Controllers
{ {
if (ModelState.IsValid) if (ModelState.IsValid)
{ {
// TODO [EF] Swap to store generated identity key when supported
var nextId = db.Albums.Any()
? db.Albums.Max(o => o.AlbumId) + 1
: 1;
album.AlbumId = nextId;
db.Albums.Add(album); db.Albums.Add(album);
db.SaveChanges(); db.SaveChanges();
return RedirectToAction("Index"); return RedirectToAction("Index");
@ -92,6 +85,7 @@ namespace MusicStore.Controllers
{ {
return new HttpStatusCodeResult(404); return new HttpStatusCodeResult(404);
} }
ViewBag.GenreId = new SelectList(db.Genres, "GenreId", "Name", album.GenreId); ViewBag.GenreId = new SelectList(db.Genres, "GenreId", "Name", album.GenreId);
ViewBag.ArtistId = new SelectList(db.Artists, "ArtistId", "Name", album.ArtistId); ViewBag.ArtistId = new SelectList(db.Artists, "ArtistId", "Name", album.ArtistId);
return View(album); return View(album);
@ -108,6 +102,7 @@ namespace MusicStore.Controllers
db.SaveChanges(); db.SaveChanges();
return RedirectToAction("Index"); return RedirectToAction("Index");
} }
ViewBag.GenreId = new SelectList(db.Genres, "GenreId", "Name", album.GenreId); ViewBag.GenreId = new SelectList(db.Genres, "GenreId", "Name", album.GenreId);
ViewBag.ArtistId = new SelectList(db.Artists, "ArtistId", "Name", album.ArtistId); ViewBag.ArtistId = new SelectList(db.Artists, "ArtistId", "Name", album.ArtistId);
return View(album); return View(album);

28
src/MusicStore/Models/ShoppingCart.cs
View File

@ -32,15 +32,9 @@ namespace MusicStore.Models
if (cartItem == null) if (cartItem == null)
{ {
// TODO [EF] Swap to store generated key once we support identity pattern
var nextCartItemId = _db.CartItems.Any()
? _db.CartItems.Max(c => c.CartItemId) + 1
: 1;
// Create a new cart item if no cart item exists // Create a new cart item if no cart item exists
cartItem = new CartItem cartItem = new CartItem
{ {
CartItemId = nextCartItemId,
AlbumId = album.AlbumId, AlbumId = album.AlbumId,
CartId = ShoppingCartId, CartId = ShoppingCartId,
Count = 1, Count = 1,
@ -53,9 +47,6 @@ namespace MusicStore.Models
{ {
// If the item does exist in the cart, then add one to the quantity // If the item does exist in the cart, then add one to the quantity
cartItem.Count++; cartItem.Count++;
// TODO [EF] Remove this line once change detection is available
_db.ChangeTracker.Entry(cartItem).State = EntityState.Modified;
} }
} }
@ -73,10 +64,6 @@ namespace MusicStore.Models
if (cartItem.Count > 1) if (cartItem.Count > 1)
{ {
cartItem.Count--; cartItem.Count--;
// TODO [EF] Remove this line once change detection is available
_db.ChangeTracker.Entry(cartItem).State = EntityState.Modified;
itemCount = cartItem.Count; itemCount = cartItem.Count;
} }
else else
@ -91,12 +78,7 @@ namespace MusicStore.Models
public void EmptyCart() public void EmptyCart()
{ {
var cartItems = _db.CartItems.Where(cart => cart.CartId == ShoppingCartId); var cartItems = _db.CartItems.Where(cart => cart.CartId == ShoppingCartId);
_db.CartItems.RemoveRange(cartItems);
foreach (var cartItem in cartItems)
{
// TODO [EF] Change to DbSet.Remove once querying attaches instances
_db.ChangeTracker.Entry(cartItem).State = EntityState.Deleted;
}
} }
public List<CartItem> GetCartItems() public List<CartItem> GetCartItems()
@ -145,11 +127,6 @@ namespace MusicStore.Models
var cartItems = GetCartItems(); var cartItems = GetCartItems();
// TODO [EF] Swap to store generated identity key when supported
var nextId = _db.OrderDetails.Any()
? _db.OrderDetails.Max(o => o.OrderDetailId) + 1
: 1;
// Iterate over the items in the cart, adding the order details for each // Iterate over the items in the cart, adding the order details for each
foreach (var item in cartItems) foreach (var item in cartItems)
{ {
@ -158,7 +135,6 @@ namespace MusicStore.Models
var orderDetail = new OrderDetail var orderDetail = new OrderDetail
{ {
OrderDetailId = nextId,
AlbumId = item.AlbumId, AlbumId = item.AlbumId,
OrderId = order.OrderId, OrderId = order.OrderId,
UnitPrice = album.Price, UnitPrice = album.Price,
@ -169,8 +145,6 @@ namespace MusicStore.Models
orderTotal += (item.Count * album.Price); orderTotal += (item.Count * album.Price);
_db.OrderDetails.Add(orderDetail); _db.OrderDetails.Add(orderDetail);
nextId++;
} }
// Set the order's total to the orderTotal count // Set the order's total to the orderTotal count