为数据注释错误消息添加前缀

Question

场景是我有一个我在剃刀表单中多次使用的对象，我需要为错误消息数据属性添加前缀，以便它们在验证摘要中有意义。

快速示例：

public class Person 
{
    [Required(ErrorMessage = "First Name is Required")]
    [StringLength(30, ErrorMessage = "First Name must be 30 characters or less")]
    public string FirstName { get; set; }
}

public class User 
{
    [Required]
    public Person User { get; set; }
    [Required]
    public Person NextOfKin { get; set; }
}

@Html.EditorFor(x => x.User.FirstName, new { htmlAttributes = new { placeholder = "First Name" }})

@Html.EditorFor(x => x.NextOfKin.FirstName, new { htmlAttributes = new { placeholder = "First Name" }})

如果我在表单中使用 User 类，并且 FirstName 在多个位置留空，则错误消息将相同，两者之间没有任何区别。

在这种情况下我最好的选择是什么？

更新：强调需要为多个 ErrorMessage 字符串添加前缀。

谢谢。

Answer 1

尝试使用客户端的标题属性覆盖表单中的相应验证消息。

 @Html.EditorFor(x => x.FirstName, new { htmlAttributes = new { @class = "form-control", required = "required", title = "User First Name is required"} })
    @Html.ValidationMessageFor(x => x.FirstName,"", new { @class = "text-danger" })
<!-- NextOfKin entry -->
@Html.EditorFor(y => y.FirstName, new { htmlAttributes = new { @class = "form-control", required = "required", title = "Next Of Kin First Name is required"} })
    @Html.ValidationMessageFor(y => y.FirstName,"", new { @class = "text-danger" })