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> PutFileUpload(int id, FileUpload fileUpload)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
if (id != fileUpload.imageid)
{
return(BadRequest());
}
db.Entry(fileUpload).State = EntityState.Modified;
try
{
await db.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!FileUploadExists(id))
{
return(NotFound());
}
else
{
throw;
}
}
return(StatusCode(HttpStatusCode.NoContent));
}
public async Task <IActionResult> DeleteFile([FromRoute] int id)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
var file = await _context.File.SingleOrDefaultAsync(m => m.ID == id);
if (file == null)
{
return(NotFound());
}
_context.File.Remove(file);
await _context.SaveChangesAsync();
return(Ok(new FileReturnInfo(file)));
}
public async Task <bool> SaveAsync()
{
return(await _context.SaveChangesAsync() > 0);
}