public async Task <IActionResult> PostOrder([FromBody] OrderPostInfo orderInfo)
{
DateTime generateTime = DateTime.Now;
// 生成 GUID 并取前四位作为密码
string password = Guid.NewGuid().ToString().Split('-')[1];
List <File> filesList = new List <File>();
// 判断传来的 fileId 是否存在，存在则建立与 order 实体的所属关系
foreach (var fileId in orderInfo.files)
{
var file = await _context.File.SingleOrDefaultAsync(m => m.ID == fileId);
if (file != null && file.Order == null)
{
filesList.Add(file);
}
}
if (filesList.Count < 1)
{
return(BadRequest());
}
Order order = new Order {
GenerateTime = generateTime, Password = password, Files = filesList
};
// 与数据库同步
_context.Order.Add(order);
await _context.SaveChangesAsync();
return(Ok(new OrderReturnInfo(order, true)));
}
public async Task <IHttpActionResult> ChangeOrder(int orderId, OrderPostInfo model)
{
var success = await _ordersService.ChangeOrder(orderId, model);
if (success)
{
return(Ok());
}
else
{
return(InternalServerError());
}
}
public async Task <bool> ChangeOrder(int id, OrderPostInfo model)
{
var order = await _db.Orders.FindAsync(id);
if (order == null)
{
return(false);
}
order.ChildrenNames = model.ChildrenNames;
order.Datetime = model.Datetime;
order.Address = model.Address.Line;
order.Location = model.Address.Location;
// Update presents
var presentsInDb = order.Presents.Select(o => new PresentInfoForEdit
{
Id = o.Id,
Name = o.Name,
BuyBySanta = o.BuyBySanta
});
var presentsToRemove = presentsInDb.Except(model.Presents, new ChangedPresentsComparer());
var presentsToEdit = presentsInDb.Intersect(model.Presents, new ChangedPresentsComparer());
var presentsToAdd = model.Presents.Except(presentsInDb, new ChangedPresentsComparer());
foreach (var present in presentsToRemove)
{
var presentInDb = order.Presents.FirstOrDefault(p => p.Id == present.Id);
_db.Presents.Remove(presentInDb);
}
foreach (var present in presentsToEdit)
{
var presentInDb = _db.Presents.FirstOrDefault(p => p.Id == present.Id);
presentInDb.Name = present.Name;
presentInDb.BuyBySanta = present.BuyBySanta;
}
foreach (var present in presentsToAdd)
{
_db.Presents.Add(new Present
{
Name = present.Name,
BuyBySanta = present.BuyBySanta,
OrderId = order.Id
});
}
try
{
var itemsAffected = await _db.SaveChangesAsync();
if (itemsAffected == 0)
{
return(false);
}
return(true);
}
catch (DbEntityValidationException)
{
return(false);
}
}
