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所以我对 ASP.NET MVC3 编程比较陌生，特别是因为实体框架代码首先创建和管理数据库的方式。

所以，我正在研究一个完整的营养系统，它必须允许营养师评估病人。因此，首先，系统允许设置一个预约，获取营养师的 ID、患者的 ID 和日期时间。一旦预约结束，营养师必须能够更新预约网，并包括营养师评估表，其中包括允许某些患者吃多少。

所以，我的课程如下

模型： NutritionalEvaluation.cs

    public class NutritionalEvaluation
{
    [ScaffoldColumn (false)]
    public virtual int ID { get; set; }
    public virtual int KiloCal { get; set; }
    public virtual int Proteines { get; set; }
    public virtual int Carbs { get; set; }
    public virtual int Fiber { get; set; }
    public virtual int Fats { get; set; }
    public virtual int Cholesterol { get; set; }
    public virtual int Water { get; set; }
    public virtual int Alcohol { get; set; } 
}

模型：PatientAppointment.cs

    public class PatientAppointment
{
    public virtual int ID { get; set; }
    public virtual int IDClient { get; set; }
    public virtual int IDNutritionist { get; set; }
    public virtual DateTime Date { get; set; }
    public virtual String Comments { get; set; }
    public virtual NutritionalEvaluation Valuation { get; set; }
}

如您所见，NutritionalValuation 是 PatientAppointment 的一个字段。

查看：EvaluateAppointment.cshtml @model NutricionApp.Models.PatientAppointment

    @{
        ViewBag.Title = "Valuation";
    }

    <h2>Valuation</h2>

    <script src="@Url.Content("~/Scripts/jquery.validate.min.js")"         type="text/javascript"></script>
    <script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>

    @using (Html.BeginForm()) {
        @Html.ValidationSummary(true)
        <fieldset>
            <legend>PatientAppointment</legend>

    @Html.HiddenFor(model => model.ID)
    @Html.HiddenFor(model => model.IDClient)
    @Html.HiddenFor(model => model.IDNutritionist)

（在此之前，已创建 PatientAppointment，并且 IDClient 和 IDNutritionist 字段均已填写。）

    <div class="editor-label">
        @Html.LabelFor(model => model.Date)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.Date)
        @Html.ValidationMessageFor(model => model.Date)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.Comments)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.Comments)
        @Html.ValidationMessageFor(model => model.Comments)
    </div>
    <!--
    <div class="editor-label">
        @Html.LabelFor(model => model.Valuation)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.Valuation)
        @Html.ValidationMessageFor(model => model.Valuation)
    </div>

    <p>
        <input type="submit" value="Save" />
    </p>
</fieldset>

MVC 足够聪明，可以将 NutritionalEvaluation 呈现为另一组字段，并将该类的所有字段包含在视图中。我的问题是，当我尝试提交表单时（从技术上讲，它应该允许更改日期、添加评论，然后添加 NutritionalEvaluation 字段），但 NutritionalEvaluation 将保存到表格中。它保持为空，并且 NutritionalValue 表保持为空。我能做些什么？

编辑1：

控制器：PatientAppointmentController.cs

    namespace NutritionApp.Controllers
    {
        [Authorize]
        public class PatientAppointmentController : Controller
        {
            private NutritionDB db = new NutritionDB();

...

    public ActionResult EvaluateAppointment(int ID)
    {
        PatientAppointment appoint = db.PatientAppointment.Find(ID);
        return View(appoint);
    }

    [HttpPost]
    public ActionResult EvaluateAppointment(PatientAppointment appoint)
    {
        if (ModelState.IsValid)
        {
            db.Entry(appoint).State = EntityState.Modified;
            db.SaveChanges();
            return RedirectToAction("Index");
        }
        return View(appoint);
    }

    public ActionResult ViewAppointments()
    {
        return View();
            }

        }
    }
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1 回答 1

0

我没有在这台电脑上安装 Visual Studio，所以我无法测试这个......

假设您使用的是实体框架代码优先方法，您的类与您的NutritionalEvaluation类没有外键关系PatientAppointment。假设存在 1-1 关系，则更NutritionalEvaluation改为：

public class NutritionalEvaluation
{
    [ScaffoldColumn (false)]
    public virtual int ID { get; set; }

    // This is the name of the navigation property defined below
    [ForeignKey("PatientAppointment")]
    public virtual int AppointmentID { get; set; }

    public virtual int KiloCal { get; set; }
    public virtual int Proteines { get; set; }
    public virtual int Carbs { get; set; }
    public virtual int Fiber { get; set; }
    public virtual int Fats { get; set; }
    public virtual int Cholesterol { get; set; }
    public virtual int Water { get; set; }
    public virtual int Alcohol { get; set; }

    // Add navigation property to PatientAppointment
    public virtual PatientAppointment PatientAppointment { get; set; }
}
于 2012-11-20T02:12:39.357 回答