使用两个按钮和一个类验证表单

Question

我有一个视图，该视图中有两个按钮，我有一个模型。一个是“更新”按钮，另一个是“更改”按钮。

我希望如果单击更新按钮，则只应验证名字， 如果单击更改按钮，则应仅验证姓氏，但单击按钮时将验证两个字段。

这是我的看法：

@model MyProject.Web.Models.User
@using (Html.BeginForm("Update", "ControllerName"))
         {
            @Html.ValidationSummary()
            @Html.LabelFor(u => u.FirstName)
            @Html.TextBoxFor(u => u.FirstName)

            <button type="submit" id="btnUpdate">Update</button>
}

@using (Html.BeginForm("Change", "ControllerName"))
         {
            @Html.ValidationSummary()
            @Html.LabelFor(u => u.LastName)
            @Html.TextBoxFor(u => u.LastName)

           <button type="submit" id="btnChange">Change</button>
        }

类实现是：

 public class User
 {
    [Required]
    [StringLength(32, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 2)]
    [Display(Name = "First Name")]
    public string FirstName { get; set; }

    [Required]
    [Display(Name = "Last Name")]
    [StringLength(32, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 2)]
    public string LastName { get; set; }
 }

Answer 1

删除必需属性并添加自定义验证。

或者只是创建两个单独的 ViewModel。

public class FirstNameViewModel 
 {
    [Required]
    [StringLength(32, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 2)]
    [Display(Name = "First Name")]
    public string Value { get; set; }
}

 public class LastNameViewModel 
 {
    [Required]
    [Display(Name = "Last Name")]
    [StringLength(32, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 2)]
    public string Value { get; set; }
 }

通用视图模型

public class ViewModel
    {
        public FirstNameViewModel FirstNameViewModel { get; set; }

        public LastNameViewModel LastNameViewModelNameViewModel { get; set; }
    }

查看

@model ViewModelDynamicAttribute.ViewModels.ComplexViewModel

@using (Html.BeginForm("Update", "Home"))
{
    @Html.ValidationSummary()
    @Html.LabelFor(u => u.FirstNameViewModel.Value)
    @Html.TextBoxFor(u => u.FirstNameViewModel.Value)

    <button type="submit" id="btnUpdate">Update</button>
}

@using (Html.BeginForm("Change", "Home"))
{
    @Html.ValidationSummary()
    @Html.LabelFor(u => u.LastNameViewModelNameViewModel.Value)
    @Html.TextBoxFor(u => u.LastNameViewModelNameViewModel.Value)

    <button type="submit" id="btnChange">Change</button>
}

动作

public ActionResult Update(ComplexViewModel viewModel)
        {
            return null;
        }

        public ActionResult Change(ComplexViewModel viewModel)
        {
            return null;
        }

然后将 viewModel 映射到用户模型上。

更新自定义验证属性

public enum ActionMethodEnum
    {
        Change,
        Update
    }

    public class ConditionalRequiredAttribute : RequiredAttribute
    {
        public ActionMethodEnum ActionMethodEnum { get; set; }

        public string ActionMethodFieldName { get; set; }

        protected override ValidationResult IsValid(object value, ValidationContext validationContext)
        {
            var property = validationContext.ObjectType.GetProperty(ActionMethodFieldName);
            if (property == null)
            {
                return new ValidationResult(string.Format("{0} is unknown property", ActionMethodFieldName));
            }
            if (property.PropertyType != typeof(ActionMethodEnum))
            {
                return new ValidationResult(string.Format("{0} property has invalid type", ActionMethodFieldName));
            }

            ActionMethodEnum actionMethodEnum;
            Enum.TryParse(property.GetValue(validationContext.ObjectInstance, null).ToString(), out actionMethodEnum);
            if (actionMethodEnum != ActionMethodEnum)
            {
                return ValidationResult.Success;
            }

            return base.IsValid(value, validationContext);
        }
    }

你的模型

public class User
    {
        public ActionMethodEnum ActionMethod { get; set; }

        [ConditionalRequired(ActionMethodEnum = ActionMethodEnum.Update, ActionMethodFieldName = "ActionMethod")]
        [StringLength(32, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 2)]
        [Display(Name = "First Name")]
        public string FirstName { get; set; }

        [ConditionalRequired(ActionMethodEnum = ActionMethodEnum.Change, ActionMethodFieldName = "ActionMethod")]
        [Display(Name = "Last Name")]
        [StringLength(32, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 2)]
        public string LastName { get; set; }
    }

观点的变化

@using (Html.BeginForm("Update", "ControllerName"))
{
    @Html.ValidationSummary()
    @Html.LabelFor(u => u.FirstName)
    @Html.TextBoxFor(u => u.FirstName)
    {
        Model.ActionMethod = ActionMethodEnum.Update;
    }
    @Html.HiddenFor(u => u.ActionMethod)

    <button type="submit" id="btnUpdate">Update</button>
}

@using (Html.BeginForm("Change", "ControllerName"))
{
    @Html.ValidationSummary()
    @Html.LabelFor(u => u.LastName)
    @Html.TextBoxFor(u => u.LastName)
    {
        Model.ActionMethod = ActionMethodEnum.Change;
    }
    @Html.HiddenFor(u => u.ActionMethod)

    <button type="submit" id="btnChange">Change</button>
}