/// <summary>
/// 更新一个对象，value=null或者id找不到则返回null，内部已经做了访问权限判断
/// </summary>
/// <param name="id"></param>
/// <param name="value"></param>
/// <returns></returns>
public async Task <T> UpdateAsync(string accid, T value)
{
bool bOk = await CanUpdateAsync(accid, value.Id);
if (bOk == false)
{
return(null);
}
var entity = value as ListableEntity;
if (entity != null)
{
await UpdateProtectListableEntityAsync(accid, entity);
}
var res = await GetDataSet(accid).FirstOrDefaultAsync(d => d.Id == value.Id);
if (res == null)
{
return(null);
}
DataCopyer.CopyDataTo(value, res);
await context.SaveChangesAsync();
return(res);
}
/// <summary>
/// 更新一个对象，value=null或者id找不到则返回null，内部已经做了访问权限判断
/// </summary>
/// <param name="id"></param>
/// <param name="value"></param>
/// <returns></returns>
public T Update(string accid, T value)
{
if (CanUpdate(accid, value.Id) == false)
{
return(null);
}
ListableEntity entity = value as ListableEntity;
if (entity != null)
{
UpdateProtectListableEntity(accid, entity);
}
var res = GetDataSet(accid).FirstOrDefault(d => d.Id == value.Id);
if (res == null)
{
return(null);
}
DataCopyer.CopyDataTo(value, res);
context.SaveChangesAsync();
return(res);
}