Question

我的模型中的属性有验证属性。如果我将模型传递给视图，验证工作正常。但是，当该模型是视图模型的属性并且控制器将视图模型传递给视图时，不显眼的验证将不再起作用，并且不会在控制器上进行验证。绑定到控制器的模型在任何一种情况下都可以正常工作。

如果可以绑定隐藏字段，并且对视图模型中的对象使用点表示法，为什么不显眼的验证也有效，是否有人就如何使其工作有建议？

视图模型（下面的第一个类是视图使用的，“必需”或不在它的第一个属性上没有区别）

public class PlanStakeholderViewModel : PlanGoalSelectorViewModel
{
    [Required]
    public PlanStakeholder PlanStakeholder { get; set; }
}
public class PlanGoalSelectorViewModel
{
    public IList<PlanGoal> AvailableGoals { get; set; }
    public IList<PlanGoal> SelectedGoals { get; set; }
    public PostedGoals PostedGoals { get; set; }
}

public class PostedGoals
{
    public string[] GoalIDs { get; set; }
}

查看

@using (Html.BeginForm())
{
    @Html.ValidationSummary(true)
    @Html.Hidden("PlanStakeholder.PlanID")
    @Html.Hidden("PlanStakeholder.Id")

    @Html.Partial("_Form")  

    <div class="editor-label"></div>
    <div class="editor-field">
        <input type="submit" value="Save" /> | @Html.ActionLink("Back to Plan", "Index", "Plan")
    </div>
}

查看_Form

@model Navigator.Views.ViewModels.PlanStakeholderViewModel

<div class="editor-label" style="vertical-align:top">
    @Html.LabelFor(model => model.PlanStakeholder.Name)
</div>
<div class="editor-field">
    @Html.EditorFor(model => model.PlanStakeholder.Name)
    @Html.ValidationMessageFor(model => model.PlanStakeholder.Name)
</div>

<div class="editor-label" style="vertical-align:top">
    @Html.LabelFor(model => model.PlanStakeholder.Relationship)
</div>
<div class="editor-field">
    @Html.EditorFor(model => model.PlanStakeholder.Relationship)
    @Html.ValidationMessageFor(model => model.PlanStakeholder.Relationship)
</div>

<div class="editor-label" style="vertical-align:top">
     <label>Associated Goals</label>
</div>
<div class="editor-field checkbox">
@Html.CheckBoxListFor(x => x.PostedGoals.GoalIDs,
                      x => x.AvailableGoals,          
                      x => x.Id,               
                      x => x.ShortTitle,               
                      x => x.SelectedGoals,
                      Position.Vertical)
</div>

MODEL

public class PlanStakeholder : Base
{
    public PlanStakeholder()
    {
        PlanID = -1;
        Relationship = String.Empty;
        Name = String.Empty;
    }

    [Required]
    public int PlanID { get; set; }

    [Required]
    [MaxLength(50, ErrorMessage = "The {0} cannot be more than {1} characters.")]
    public string Relationship { get; set; }

    [Required]
    [MaxLength(50, ErrorMessage = "The {0} cannot be more than {1} characters.")]
    public string Name { get; set; }
}

更新1 下面是Relationship属性的表单html的输出。

<input class="text-box single-line" data-val="true" data-val-required="The Relationship field is required." id="PlanStakeholder_Relationship" name="PlanStakeholder.Relationship" type="text" value="Mom" />

以下是控制器操作

[AuthorizeRoles(RoleSite.None, RoleOrg.OrgMember, RoleCohort.Client)]
public ActionResult Edit(int id, int planId)
{
    var plan = PlanManager.GetSingle(CurrentUser.UserId, CurrentOrg.Id);

    var model = new PlanStakeholderViewModel();
    model.PlanStakeholder = PlanStakeholderManager.GetSingle(id, CurrentUser.UserId);
    model.AvailableGoals = PlanGoalManager.GetList(plan.Id, CurrentUser.UserId);
    model.SelectedGoals = PlanGoalManager.GetRelatedToStakeholder(id, CurrentUser.UserId);

    if (model.Item.Id != id)
    {
        return HttpNotFound();
    }

    return View(model);
}

[HttpPost, ActionName("Edit")]
[AuthorizeRoles(RoleSite.None, RoleOrg.OrgMember, RoleCohort.Client)]
public ActionResult EditConfirmed(PlanStakeholderViewModel model)
{
    if (ModelState.IsValid)
    {
        ///DO STUFF
        return RedirectToAction("Index", "Plan");
    }
    return View(model);
}

更新2 如果我在视图中注释掉CheckBoxListFor，那么一切正常。看起来我需要提出这个问题/问题elsewhere。如果没有注释掉，如果我为PlanStakeholder.Name输入一个比模型允许的更长的值，我会得到“值不能为空。参数名称：source”作为我在拥有@Html的行上的asp.net错误.CheckBoxListFor。

Answer 1

这是我倾向于不使用部分视图的一个原因。他们有太多陷阱，你必须知道各种细节。

我非常喜欢EditorTemplates。它们正确处理集合并生成嵌套属性的正确名称。并且，它们处理FormContext问题。

但是......无论如何。将其添加到局部视图的顶部。

@{ ViewContext.FormContext = new FormContext(); }

MVC 4对视图模型中的对象进行不显眼的验证

1 个答案: