Question

如何防止context.savechangs在必需的属性上抛出错误

我有这段代码来起草消息

这是控制器方法

    public string DraftMessage(message draftMessage, string status, HttpPostedFileBase[] files = null)
    {
        ModelState.Remove("Title");
        ModelState.Remove("Body");
        if (ModelState.IsValid)
        {
            return new MessageActions().DraftMessage(draftMessage, status);
        }
        return "validation error";
    }

这是模型方法

    public string DraftMessage(message draftMessage, string status)
    {
        if (status == "new")
        {
            draftMessage = new message();
            draftMessage.Status = "DR";
            draftMessage.DateOfCreation = DateTime.UtcNow;
            draftMessage.C_From = CurrentUser.Id;
            context.messages.Add(draftMessage);
            draftMessage.To = new int[2];
            foreach (int receiverId in draftMessage.To)
            {
                if (context.users.Any(user => user.user_id == receiverId && (user.DepartmentOfTheUser.Company == CurrentUser.Company || user.DepartmentOfTheUser.CompanyOfTheDepartment.CompanyCustomers.Any(cus => cus.customer_of == CurrentUser.Company) || user.DepartmentOfTheUser.CompanyOfTheDepartment.CompanySuppliers.Any(supp => supp.supplier_of == CurrentUser.Company))))
                {
                    context.MessageReceiversConnectors.Add(new MessageReceiversConnector() { MessageId = draftMessage.id, ReceiverId = receiverId, MessageStatus = "DR" });
                }
            }
        }

        context.SaveChanges();

        return "draft";
    }

我使用entityframework创建的相同实体来交换数据，我使用了使用所需的属性进行验证，请看下面的代码

 [Required(ErrorMessage="This field is required")]        
    public int[] To { get; set; }

    [Required(ErrorMessage = "This field is required")]        
    public string Title { get; set; }

    [Required(ErrorMessage = "This field is required")]        
    public string Body { get; set; }

ModelState.Remove在控制器端工作，但是当我到达模型时，它会在context.savechanges上抛出异常。

有没有办法解决这个问题。

Answer 1

我通过将此选项context.Configuration.ValidateOnSaveEnabled设置为false来解决我的问题。

ModelState.Remove不会阻止context.savechangs抛出错误

1 个答案: