/// <summary>
/// 将照片保存到指定的路径中，并返回唯一的路径名
/// </summary>
/// <returns></returns>
private string ProcessUploadedFile(DeviceCreateViewModel model)
{
string uniqueFileName = null;
if (model.Photos.Count > 0)
{
foreach (var photo in model.Photos)
{
//必须将图像上传到wwwroot中的images文件夹
//而要获取wwwroot文件夹的路径，我们需要注入ASP.Net Core提供的webHostEnvironment.WebRootPath
string uploadsFolder = Path.Combine(webHostEnvironment.WebRootPath, "images");
//为了确保文件名是唯一的，我们在文件名后附加一个新的GUID值和一个下划线
uniqueFileName = Guid.NewGuid().ToString() + "_" + photo.FileName;
string filePath = Path.Combine(uploadsFolder, uniqueFileName);
//因为使用了非托管资源，所以需要手动进行释放
using (var fileStream = new FileStream(filePath, FileMode.Create))
{
//使用IFormFile接口提供的CopyTo()方法见文件赋值到wwwroot/images文件夹
photo.CopyTo(fileStream);
}
}
}
return(uniqueFileName);
}
public async Task <IActionResult> Create(DeviceCreateViewModel deviceViewModel)
{
AppUser appUser = AuthExtender.GetLoggedInUser(this, _context);
/*if (true)
* {
* ModelState.AddModelError("OwnerId", "Hack attempt!");
* return View(deviceViewModel);
* }*/
if (ModelState.IsValid)
{
AppUser newOwner = null;
if (appUser.Id.Equals(deviceViewModel.OwnerId))
{
newOwner = appUser;
}
else
{
AppUser probablyNewOwner = _context.Users.FirstOrDefault(p => p.Id.Equals(deviceViewModel.OwnerId));
if (probablyNewOwner == null)
{
ModelState.AddModelError("OwnerId", "Hack attempt!");
ViewBag.UserList = MakeAllowedUsersList(appUser, null);
return(View(deviceViewModel));
}
if (_context.SickWardenRelations.Any(p => p.Warden.Equals(appUser) && p.Sick.Equals(probablyNewOwner) && p.IsAccepted.Equals(true)))
{
newOwner = probablyNewOwner;
}
else
{
ModelState.AddModelError("OwnerId", "Hack attempt!");
ViewBag.UserList = MakeAllowedUsersList(appUser, null);
return(View(deviceViewModel));
}
}
Device device = new Device
{
Id = deviceViewModel.Id,
Name = deviceViewModel.Name,
Comment = deviceViewModel.Comment,
Owner = newOwner,
IsServiceObligatory = deviceViewModel.IsServiceObligatory,
LastPlaceLeft = deviceViewModel.LastPlaceLeft,
LastServiceDate = deviceViewModel.LastServiceDate,
LastUsedDate = deviceViewModel.LastUsedDate
};
_context.Add(device);
await _context.SaveChangesAsync();
return(RedirectToAction(nameof(Index)));
}
ViewBag.UserList = MakeAllowedUsersList(appUser, null);
return(View(deviceViewModel));
}
public IActionResult Create(DeviceCreateViewModel model)
{
if (ModelState.IsValid)
{
Device newDevice = new Device
{
GUID = Guid.NewGuid().ToString(),
Name = model.Name,
ClassName = model.ClassName,
City = model.City,
PhotoPath = ProcessUploadedFile(model),
};
_deviceRepository.Add(newDevice);
return(RedirectToAction("Details", new { id = newDevice.Id }));
}
return(View());
}
// GET: Devices/Edit/5
public async Task <IActionResult> Edit(long?id)
{
AppUser appUser = AuthExtender.GetLoggedInUser(this, _context);
if (id == null)
{
return(NotFound());
}
Device device = await _context.Devices.FindAsync(id);
if (device == null)
{
return(NotFound());
}
await _context.Entry(device).Reference(p => p.Owner).LoadAsync();
if (!device.Owner.Equals(appUser) & !_context.SickWardenRelations.Any(p => p.Warden.Equals(appUser) && p.Sick.Equals(device.Owner) && p.IsAccepted.Equals(true)))
{
return(NotFound());
}
ViewBag.UserList = MakeAllowedUsersList(appUser, device.Owner.Id);
DeviceCreateViewModel deviceViewModel = new DeviceCreateViewModel
{
Id = device.Id,
Name = device.Name,
Comment = device.Comment,
OwnerId = device.Owner.Id,
IsServiceObligatory = device.IsServiceObligatory.GetValueOrDefault(),
LastPlaceLeft = device.LastPlaceLeft,
LastServiceDate = device.LastServiceDate,
LastUsedDate = device.LastUsedDate
};
return(View(deviceViewModel));
}
public async Task <IActionResult> Edit(long id, DeviceCreateViewModel deviceViewModel)
{
AppUser appUser = AuthExtender.GetLoggedInUser(this, _context);
if (id != deviceViewModel.Id)
{
return(NotFound());
}
if (ModelState.IsValid)
{
Device device = await _context.Devices.FindAsync(id);
await _context.Entry(device).Reference(p => p.Owner).LoadAsync();
if (!device.Owner.Equals(appUser) & !_context.SickWardenRelations.Any(p => p.Warden.Equals(appUser) && p.Sick.Equals(device.Owner) && p.IsAccepted.Equals(true)))
{
return(NotFound());
}
if (!device.Owner.Id.Equals(deviceViewModel.OwnerId))
{
AppUser newOwner = null;
if (appUser.Id.Equals(deviceViewModel.OwnerId))
{
newOwner = appUser;
}
else
{
AppUser probablyNewOwner = _context.Users.FirstOrDefault(p => p.Id.Equals(deviceViewModel.OwnerId));
if (probablyNewOwner == null)
{
ModelState.AddModelError("OwnerId", "Hack attempt!");
ViewBag.UserList = MakeAllowedUsersList(appUser, null);
return(View(deviceViewModel));
}
if (_context.SickWardenRelations.Any(p => p.Warden.Equals(appUser) && p.Sick.Equals(probablyNewOwner) && p.IsAccepted.Equals(true)))
{
newOwner = probablyNewOwner;
}
else
{
ModelState.AddModelError("OwnerId", "Hack attempt!");
ViewBag.UserList = MakeAllowedUsersList(appUser, null);
return(View(deviceViewModel));
}
}
device.Owner = newOwner;
}
device.Name = deviceViewModel.Name;
device.Comment = deviceViewModel.Comment;
device.LastUsedDate = deviceViewModel.LastUsedDate;
device.LastPlaceLeft = deviceViewModel.LastPlaceLeft;
device.IsServiceObligatory = deviceViewModel.IsServiceObligatory;
device.LastServiceDate = deviceViewModel.LastServiceDate;
try
{
_context.Update(device);
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!DeviceExists(device.Id))
{
return(NotFound());
}
else
{
throw;
}
}
return(RedirectToAction(nameof(Index)));
}
ViewBag.UserList = MakeAllowedUsersList(appUser, deviceViewModel.OwnerId);
return(View(deviceViewModel));
}