我目前正在使用 MVS 2010 浏览 MVC 教程 Nerd Dinner 我已经到了第 7 步，但我刚刚注意到，当我现在进入创建屏幕时，它并不完全正确。
- 标题输入框似乎包含
ViewBag.Title而不是空白。 - 输入框为
EventDate空白时应自动设置为从现在起7天。
我不记得在教程的前面是这样的。
这是DinnersController.cs处理 Create 的代码片段：
//
// GET: /Dinners/Create
public ActionResult Create()
{
Dinner dinner = new Dinner()
{
EventDate = DateTime.Now.AddDays(7)
};
return View(new DinnerFormViewModel(dinner));
}
//
// POST: /Dinners/Create
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Create(Dinner dinner)
{
if (ModelState.IsValid)
{
try
{
dinner.HostedBy = "SomeUser";
dinnerRepository.Add(dinner);
dinnerRepository.Save();
return RedirectToAction("Details", new { id = dinner.DinnerID });
}
catch
{
ModelState.AddModelErrors(dinner.GetRuleViolations());
}
}
return View(new DinnerFormViewModel(dinner));
}
这是视图 Create.cshtml
@model NerdDinner.Models.DinnerFormViewModel
@{
ViewBag.Title = "Host a Dinner";
}
<h2>Host a Dinner</h2>
@Html.ValidationSummary("Please correct the errors and try again")
@using (Html.BeginForm()) {
<fieldset>
<p>
@Html.LabelFor(model => Model.Dinner.Title)
<br />
@Html.TextBox("Title")
@Html.ValidationMessage("Title", "*")
</p>
<p>
@Html.LabelFor(model => Model.Dinner.EventDate)
<br />
@Html.TextBox("EventDate")
@Html.ValidationMessage("EventDate", "*")
</p>
<p>
@Html.LabelFor(model => Model.Dinner.Description)
<br />
@Html.TextArea("Description")
@Html.ValidationMessage("Description", "*")
</p>
<p>
@Html.LabelFor(model => Model.Dinner.Address)
<br />
@Html.TextBox("Address")
@Html.ValidationMessage("Address", "*")
</p>
<p>
@Html.LabelFor(model => Model.Countries)
<br />
@Html.DropDownList("Country", Model.Countries)
@Html.ValidationMessage("Country", "*")
</p>
<p>
@Html.LabelFor(model => Model.Dinner.ContactPhone)
<br />
@Html.TextBox("ContactPhone")
@Html.ValidationMessage("ContactPhone", "*")
</p>
<p>
@Html.LabelFor(model => Model.Dinner.Latitude)
<br />
@Html.TextBox("Latitude")
@Html.ValidationMessage("Latitude", "*")
</p>
<p>
<label for="Longitude">Longitude:</label>
<br />
@Html.TextBox("Longitude")
@Html.ValidationMessage("Longitude", "*")
</p>
<p>
<input type="submit" value="Create" />
</p>
</fieldset>
}
<div>
@Html.ActionLink("Back to List", "Index")
</div>
最后是浏览器中的输出：
有人知道我错过了什么吗？
编辑 - 添加晚餐模型
using System;
using System.Collections.Generic;
using System.Data.Linq;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Text; //added this - not in tut
using System.Text.RegularExpressions; //added this - not in tut
namespace NerdDinner.Models
{
[Bind(Include = "Title,Description,EventDate,Address,Country,ContactPhone,Latitude,Longitude")]
public partial class Dinner
{
public bool IsValid
{
get { return (GetRuleViolations().Count() == 0); }
}
public IEnumerable<RuleViolation> GetRuleViolations()
{
if (String.IsNullOrEmpty(Title))
yield return new RuleViolation("Title required", "Title");
if (String.IsNullOrEmpty(Description))
yield return new RuleViolation("Description required", "Description");
if (String.IsNullOrEmpty(HostedBy))
yield return new RuleViolation("HostedBy required", "HostedBy");
if (String.IsNullOrEmpty(Address))
yield return new RuleViolation("Address required", "Address");
if (String.IsNullOrEmpty(Country))
yield return new RuleViolation("Country required", "Country");
if (String.IsNullOrEmpty(ContactPhone))
{
yield return new RuleViolation("ContactPhone required", "ContactPhone");
}
else
{
if (!PhoneValidator.IsValidNumber(ContactPhone, Country))
yield return new RuleViolation("Phone# does not match country", "ContactPhone");
}
yield break;
}
partial void OnValidate(ChangeAction action)
{
if (!IsValid)
throw new ApplicationException("Rule voilations prevent saving");
}
}
public class RuleViolation
{
public string ErrorMessage { get; private set; }
public string PropertyName { get; private set; }
public RuleViolation(string errorMessage, string propertyName)
{
ErrorMessage = errorMessage;
PropertyName = propertyName;
}
}
public class PhoneValidator
{
static IDictionary<string, Regex> countryRegex = new Dictionary<string, Regex>()
{
{ "USA", new Regex("^[2-9]\\d{2}-\\d{3}-\\d{4}$")},
{ "UK", new Regex("(^1300\\d{6}$)|(^1800|1900|1902\\d{6}$)|(^0[2|3|7|8]{1}[0-9]{8}$)|(^04\\decimal{2,3}\\decimal{6}$)")},
{ "Netherlands", new Regex("(^\\+[0-9]{2}|^\\+[0-9]{2}\\(0\\)|^\\(\\+[0-9]{2}\\)\\(0\\)|^00[0-9]{2}|^0)([0-9]{9}$|[0-9\\-\\s]{10}$)")},
};
public static bool IsValidNumber(string phoneNumber, string country)
{
if (country != null && countryRegex.ContainsKey(country))
return countryRegex[country].IsMatch(phoneNumber);
else
return false;
}
public static IEnumerable<string> Countries
{
get
{
return countryRegex.Keys;
}
}
}
public class DinnerFormViewModel
{
// Properties
public Dinner Dinner { get; private set; }
public SelectList Countries { get; private set; }
// Contructor
public DinnerFormViewModel(Dinner dinner)
{
Dinner = dinner;
Countries = new SelectList(PhoneValidator.Countries, dinner.Country);
}
}
}