MVC4 中的更新方法给出验证错误

Question

我有一个用户个人资料页面，我希望该用户仅更新某些字段并且不能更改他的电子邮件或注册日期。但是当我想 post 时，我在那些不在我看来的字段中收到验证错误。顺便说一下，我在单独的 .cs 中有 CUD。我的 EF 模型在 DomainModels 文件夹中，我用 EntityModels 文件夹中的另一个模型（具有验证）覆盖它们。这是代码：

控制器：

[HttpPost]
public ActionResult UserProfile(Merchant merchant)
{
    MerchantRepository blMerchant = new MerchantRepository();

    if (ModelState.IsValid)
    {
        if (blMerchant.Update(merchant))
        {
            return RedirectToAction("UserProfile");
            //return MessageBox.Show("Product Edited Successfuly", MessageType.Success);
        }
        else
        {
            return MessageBox.Show(ModelState.GetErrors(), MessageType.Alert);
        }
    }
    else
    {
        return MessageBox.Show(ModelState.GetErrors(), MessageType.Warning);
    }
}

查看：

@using (Html.BeginForm("UserProfile", "Merchant", FormMethod.Post))
{
    @Html.AntiForgeryToken()
    @Html.ValidationSummary(true)
    @Html.HiddenFor(model => model.id)

    <label for="account-fn">Full Name</label>
    @Html.TextBoxFor(model => model.Name, new { @class="form-control form-control-rounded" , @required="required"})
    @Html.ValidationMessageFor(model => model.Name)

    <label for="account-email">Phone</label>
    @Html.TextBoxFor(model => model.Phone, new { @class = "form-control form-control-rounded", @required = "required" })
    @Html.ValidationMessageFor(model => model.Phone)

    <label>DOB</label>
    @Html.TextBoxFor(model => model.Dob, new { @class = "form-control form-control-rounded" })
    @Html.ValidationMessageFor(model => model.Dob)

    @Html.CheckBoxFor(model => model.NewsLetter, new { @class = "input"})

    <button class="btn btn-sm btn-primary m-r-5">Update Profile</button>
}

商家资料库

public bool Update(MySite.Models.DomainModels.Merchant entity, bool autoSave = true)
{
    try
    {
        db.Merchants.Attach(entity);
        db.Entry(entity).State = System.Data.Entity.EntityState.Modified;
        if (autoSave)
            return Convert.ToBoolean(db.SaveChanges());
        else
            return false;
    }
    catch
    {
        return false;
    }
}

商家元数据

internal class MerchantMetaData
{
    [ScaffoldColumn(false)]
    [Bindable(false)]
    public int id { get; set; }

    [Required(ErrorMessage = "Please Enter Your Name", AllowEmptyStrings = false)]

    [StringLength(50, ErrorMessage = "Please Enter Shorter Name")]
    public string Name { get; set; }

    [Required(ErrorMessage = "Please Enter your Email Address", AllowEmptyStrings = false)]
    public string Email { get; set; }

    [ScaffoldColumn(false)]
    public bool EmailConfirmed { get; set; }

    [Required(ErrorMessage = "Please Enter your Password", AllowEmptyStrings = false)]
    [DataType(DataType.Password)]
    public string Password { get; set; }

    [ScaffoldColumn(false)]
    public int MembershipId { get; set; }

    [ScaffoldColumn(false)]
    [DataType(DataType.DateTime)]
    public System.DateTime SignupDate { get; set; }

并在 namespace MySite.Models.DomainModels

[MetadataType(typeof(MySite.Models.EntityModels.MerchantMetaData))]
public partial class Merchant
{
    [Compare("Password", ErrorMessage = "Confirm Password Doesn't Match The Field Above, Type Again !")]
    [DataType(DataType.Password)]
    public string ConfirmPassword { get; set; }
}

更新

我只用这些文件做了一个 class 并按照@StephenMuecke 所说的进行了映射，但仍然出现验证错误：

[HttpGet]
    public ActionResult UserProfile()
    {
        MerchantRepository blMerchant = new MerchantRepository();
        var username = User.Identity.Name;
        var UserData = blMerchant.Where(x => x.Email == username).SingleOrDefault();
        var user=new UserVM();
        user.id = UserData.id;
        user.Name = UserData.Name;
        user.Dob = DateTime.Now;
        user.NewsLetter = UserData.NewsLetter;
        user.Gender = UserData.Gender;
        user.Phone = UserData.Phone;
        return View(user);
    }

[HttpPost]
    public ActionResult UserProfile(UserVM user)
    {
        MerchantRepository blMerchant = new MerchantRepository();
        var username = User.Identity.Name;
        var merchant = blMerchant.Where(x => x.Email == username).SingleOrDefault();
        merchant.id = user.id;
        merchant.Name = user.Name;
        merchant.Dob = user.Dob;
        merchant.NewsLetter = user.NewsLetter;
        merchant.Gender = user.Gender;


        if (ModelState.IsValid)
        {
            if (blMerchant.Update(merchant))
            {
                return RedirectToAction("UserProfile");
                //return MessageBox.Show("Product Edited Successfuly", MessageType.Success);
            }
            else
            {
                return MessageBox.Show(ModelState.GetErrors(), MessageType.Alert);
            }
        }
        else
        {
            return MessageBox.Show(ModelState.GetErrors(), MessageType.Warning);
        }
    }

用户虚拟机

public class UserVM
{ 
    public int id { get; set; }
    public string Name { get; set; }
    public string Password { get; set; }
    public string Phone { get; set; }
    public DateTime Dob { get; set; }
    public string Gender { get; set; }
    public bool NewsLetter { get; set; }
}

错误 ------>

System.Data.Entity.Validation.DbEntityValidationException was caught
  HResult=-2146232032
  Message=Validation failed for one or more entities. See 'EntityValidationErrors' property for more details.
  Source=EntityFramework
  StackTrace:
       at System.Data.Entity.Internal.InternalContext.SaveChanges()
       at System.Data.Entity.Internal.LazyInternalContext.SaveChanges()
       at System.Data.Entity.DbContext.SaveChanges()
       at MySite.Models.Repositories.MerchantRepository.Update(Merchant entity, Boolean autoSave) in d:\MySite\MySite\Models\Repositories\MerchantRepository.cs:line 59
  InnerException:

Answer 1

从实体中删除此属性并将其应用于 ViewModel。更新数据时，您只更新了几个字段，而不是整个实体。

internal class MerchantMetaData 
{
    [ScaffoldColumn(false)]
    [Bindable(false)]
    public int id { get; set; }

    [Required(ErrorMessage = "Please Enter Your Name", AllowEmptyStrings = false)]

    [StringLength(50, ErrorMessage = "Please Enter Shorter Name")]
    public string Name { get; set; }

    [Required(ErrorMessage = "Please Enter your Email Address", AllowEmptyStrings = false)]
    public string Email { get; set; }

    [ScaffoldColumn(false)]
    public bool EmailConfirmed { get; set; }

    [Required(ErrorMessage = "Please Enter your Password", AllowEmptyStrings = false)]
    [DataType(DataType.Password)]
    public string Password { get; set; }

    [ScaffoldColumn(false)]
    public int MembershipId { get; set; }

    [ScaffoldColumn(false)]
    [DataType(DataType.DateTime)]
    public System.DateTime SignupDate { get; set; }
}

不更新整个实体，仅更新您要更新的属性。

public bool Update(MySite.Models.DomainModels.Merchant entity, bool autoSave = true)
{
    try
    {
        db.Entry(vR).Property(x => x.Name).IsModified = true;
        db.Entry(vR).Property(x => x.Phone).IsModified = true;
        db.Entry(vR).Property(x => x.Dob).IsModified = true;
        db.Entry(vR).Property(x => x.NewsLetter).IsModified = true;

        if (autoSave)
            return Convert.ToBoolean(db.SaveChanges());
        else
            return false;
            else
        return false;
    }
    catch
    {
        return false;
    }
}

MVC4 中的更新方法给出验证错误

Update Method in MVC4 gives Validation error

model-view-controller

asp.net-mvc

asp.net-mvc-4