Question

如果用户没有正确输入页面上的所有内容，我有一个使用MVC 5验证的特定问题来显示错误消息。表单的HTML标记如下：

                @using (Html.BeginForm("RegisterDo", "User", FormMethod.Post))
                {
                    <div>
                        @Html.ValidationMessageFor(model => model.FirstName)
                        @Html.TextBoxFor(m => m.FirstName, new { placeholder = "First name", @class = "form-control", @type = "text" })



                    </div>
                    <div>
                        @Html.ValidationMessageFor(model => model.LastName)
                        @Html.TextBoxFor(m => m.LastName, new { placeholder = "Last name", @class = "form-control", @type = "text" })


                    </div>
                    <div>
                        @Html.ValidationMessageFor(model => model.Email)
                        @Html.TextBoxFor(m => m.Email, new { placeholder = "Email", @class = "form-control", @type = "email" })

                    </div>
                    <div>
                        @Html.ValidationMessageFor(model => model.Password)
                        @Html.TextBoxFor(m => m.Password, new { placeholder = "Password", @class = "form-control", @type = "password" })

                    </div>
                    <div>
                        @Html.ValidationMessageFor(model => model.PasswordConfirm)
                        @Html.TextBoxFor(m => m.PasswordConfirm, new { placeholder = "Confirm password", @class = "form-control", @type = "password" })


                    </div>
                    <div>
                        @Html.ValidationMessageFor(model => model.SelectedCountryId)
                        @Html.DropDownListFor(model => model.SelectedCountryId, Model.Countries, "-- Please select a country --", new { @class = "select2_single form-control select2-hidden-accessible", @tabindex = "-1" })

                    </div>
                    <div>
                        <input class="btn btn-default submit" type="submit" value="Register" />
                    </div>
                }

请注意，我有一个下拉列表，我需要在渲染视图时首先填充（即我必须将国家/地区列表传递到视图以便正确呈现）。我在这里遇到的问题是，当我点击“注册”按钮时，我的动作中的代码不会被触发。相反，我只需在浏览器中获取以下URL：

http://localhost:60617/user/register?FirstName=&LastName=&Email=&Password=&PasswordConfirm=&SelectedCountryId=

根本不显示错误消息......根本不会触发代码...

这是我的两个行动：

  [HttpPost]
        [ActionName("Register")]

        public ActionResult DoRegister(UserRegistrationViewModel model)

        {
            if (ModelState.IsValid)
            {
                var user = new Users();
                user.FirstName = model.FirstName;
                user.LastName = model.LastName;
                user.Email = model.Email;
                user.PasswordSalt = Helpers.PasswordHelper.CreateSalt(40);
                user.PasswordHash = Helpers.PasswordHelper.CreatePasswordHash(model.Password, user.PasswordSalt);
                user.CountryId = Convert.ToInt32(model.SelectedCountryId);
                user.Active = true;
                Connection.ctx.Users.Add(user);
                Connection.ctx.SaveChanges();
                var role = new UserRoles();
                role.RoleId = 2;
                role.UserId = user.UserId;
                role.Active = true;
                user.UserRoles.Add(role);
                Connection.ctx.SaveChanges();
                return RedirectToAction("Success");
            }
            else
            {
                return View("Register", model);
            }
        }
        public ActionResult Register()
        {
            var model = new UserRegistrationViewModel();
            var countries = Connection.ctx.Countries.OrderBy(x => x.CountryName).ToList();
            model.Countries = new SelectList(countries, "CountryId", "CountryName");
            return View(model);
        }

第一个动作负责渲染视图，第二个动作负责用户注册时的逻辑......

我在这里做错了什么。我错过了一些非常明显的东西，但我只是看不到...... :(

这里编辑的是ViewModel：

  public class UserRegistrationViewModel
    {
        [Required(ErrorMessage = "First name is required!")]
        public string FirstName { get; set; }

        [Required(ErrorMessage = "Last name is required!")]
        public string LastName { get; set; }

        [Required(ErrorMessage = "Email name is required!")]
        public string Email { get; set; }

        [Required(ErrorMessage = "Password name is required!")]
        public string Password { get; set; }

        [Required(ErrorMessage = "Password confirmation name is required!")]
        public string PasswordConfirm { get; set; }
        [Required(ErrorMessage = "Country needs to be selected!")]
        public int SelectedCountryId { get; set; }


        public SelectList Countries { get; set; }
}

Answer 1

else
{
    var countries = Connection.ctx.Countries.OrderBy(x => x.CountryName).ToList();
    ViewBag.Countries = new SelectList(countries, "CountryId", "CountryName");
    return View("Register", model);
}

再次将模型传递给您的视图

Answer 2

一切都很好，除了应该

的其他部分

return View("Register", model);

需要传递模型才能查看这些错误消息。并采取Hit动作方法将视图中的操作名称更改为＆＃34; RegisterDo＆＃34;

或

添加

 [ActionName("Register")] 
[HttpPost]
public ActionResult RegisterDo(UserRegistrationViewModel model)

Answer 3

在帖子方法中添加import time from bottle import route, run, template, view, request @route('/') @view('test.html') def index(): context = {'request': request} return (context) def worker_loop(): work_on_the_db_each_10_seconds() time.sleep(10) run(host='localhost', port=9000, debug=True)属性：

[ActionName("Register")]

无法在视图上显示MVC 5验证错误消息

3 个答案: