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我正在使用 MVC 4 和 Entity Framework 来开发 Web 应用程序。我正在使用加载了 javascript 的部分视图。其中之一是包含验证的创建视图。这就是我的问题：验证。我有一个自定义验证逻辑，例如，如果用户在“名称”等字段中输入一些数字，则会显示错误。

在这里，使用局部视图，它会在显示错误的情况下重定向我的局部视图，但我想做的是留在我的主视图（索引视图）上并保留显示错误的局部视图。

编辑 ：

这是我的部分观点：

@model BuSIMaterial.Models.Person

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

        <div class="editor-label">
            First name : 
        </div>
        <div class="editor-field">
            @Html.TextBoxFor(model => model.FirstName, new { maxlength = 50 })
            @Html.ValidationMessageFor(model => model.FirstName)
        </div>

        <div class="editor-label">
            Last name : 
        </div>
        <div class="editor-field">
            @Html.TextBoxFor(model => model.LastName, new { maxlength = 50 })
            @Html.ValidationMessageFor(model => model.LastName)
        </div>

        <div class="editor-label">
            National number : 
        </div>
        <div class="editor-field">
            @Html.TextBoxFor(model => model.NumNat, new { maxlength = 11 })
            @Html.ValidationMessageFor(model => model.NumNat)
        </div>

        <div class="editor-label">
            Start date : 
        </div>
        <div class="editor-field">
            @Html.TextBoxFor(model => model.StartDate, new {@class = "datepicker", @placeholder="yyyy/mm/dd"})
            @Html.ValidationMessageFor(model => model.StartDate)
        </div>

        <div class="editor-label">
            End date : 
        </div>
        <div class="editor-field">
            @Html.TextBoxFor(model => model.EndDate, new { @class = "datepicker", @placeholder = "yyyy/mm/dd" })
            @Html.ValidationMessageFor(model => model.EndDate)
        </div>

        <div class="editor-label">
            Distance House - Work (km) : 
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.HouseToWorkKilometers)
            @Html.ValidationMessageFor(model => model.HouseToWorkKilometers)
        </div>

        <div class="editor-label">
            Category : 
        </div>
        <div class="editor-field">
            @Html.DropDownList("Id_ProductPackageCategory", "Choose one ...")
            @Html.ValidationMessageFor(model => model.Id_ProductPackageCategory) <a href = "../ProductPackageCategory/Create">Add a new category?</a>
        </div>

        <div class="editor-label">
            Upgrade? : 
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Upgrade)
            @Html.ValidationMessageFor(model => model.Upgrade)
        </div>

        <br />

        <div class="form-actions">
          <button type="submit" class="btn btn-primary">Create</button>
        </div>
    </fieldset>
}


@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
    @Scripts.Render("~/bundles/jqueryui")
    @Styles.Render("~/Content/themes/base/css")
}

在我看来索引，我有这个：

<div class="form-actions"><button type="button" id="create" class="btn btn-primary">Create</button> </div>
<div id ="create_person"></div>

以及我加载部分视图的方式：

            $("#create").click(function () {
                var form = $("#create_person").closest("form");
                form.removeData('validator');
                form.removeData('unobtrusiveValidation');
                $.validator.unobtrusive.parse(form);

                $.ajax({
                    url: "/Person/CreateOrUpdate",
                    type: "POST",
                    data: $("#create_person").serialize(),
                    cache: false
                });

//                var url = '/Person/CreatePerson';
//                $("#create_person").load(url);

            });

行动 ：

[HttpGet]
        public ActionResult CreateOrUpdate()
        {
            ViewBag.Id_ProductPackageCategory = new SelectList(db.ProductPackageCategories, "Id_ProductPackageCategory", "Name");
            return View();
        }


        [HttpPost]
        public JsonResult CreateOrUpdate(Person person)
        {
            ViewBag.Id_ProductPackageCategory = new SelectList(db.ProductPackageCategories, "Id_ProductPackageCategory", "Name", person.Id_ProductPackageCategory);

            try
            {
                if (!ModelState.IsValid)
                {
                    string messages = string.Join("; ", ModelState.Values
                                        .SelectMany(x => x.Errors)
                                        .Select(x => x.ErrorMessage));
                    throw new Exception("Please correct the following errors: " + Environment.NewLine + messages);
                }

                db.Persons.AddObject(person);
                db.SaveChanges();

                return Json(new { Result = "OK" });
            }
            catch (Exception ex)
            {
                return Json(new { Result = "ERROR", Message = ex.Message });
            }
        }
4

2 回答 2

2

如果您发布页面，它将不会返回到动态加载的局部视图。尝试对 /Person/CreatePerson 进行 ajax 调用。您的 CreatePerson 看起来类似于 

[HttpPost]
    public JsonResult CreatePerson(Person person)
    {
        ViewBag.Id_ProductPackageCategory = new SelectList(db.ProductPackageCategories, "Id_ProductPackageCategory", "Name", person.Id_ProductPackageCategory);

    try
    {
        if (!ModelState.IsValid)
        {
            string messages = string.Join("; ", ModelState.Values
                                .SelectMany(x => x.Errors)
                                .Select(x => x.ErrorMessage));
            throw new Exception("Please correct the following errors: " + Environment.NewLine + messages);
        }

        db.Persons.AddObject(person);
        db.SaveChanges();

        return Json(new { Result = "OK" });
    }
    catch (Exception ex)
    {
        return Json(new { Result = "ERROR", Message = ex.Message });
    }
}                                                                                                    `

对 /Person/CreatePerson 的 ajax 调用看起来类似于

` 

$.ajax({
                url: '/Person/CreatePerson',
                type: "POST",
                data: $("#form").serialize(),
                success: function (responce) {
                    alert(responce.Message);
                },
                error: function (xhr, textStatus) {
                    alert(xhr.status + " " + xhr.statusText);
                }
            });

此外，不显眼的验证不适用于动态内容。检查动态添加的局部视图上的链接不显眼验证（不工作）

于 2013-04-16T08:32:55.583 回答
0

我为此开发了一个不错的解决方法。部分页面不会在回发时显示服务器错误。首先，我们得到错误，将它们发送回页面，然后在 javascript 中创建它们并重新验证页面。希望，嘿presto！

在您的控制器中：

        if (ModelState.IsValid)
        {
            //... whatever code you need in here
        }            
        var list = ModelStateHelper.AllErrors(ModelState);
        TempData["shepherdErrors"] = list;

我将它放在 TempData 中，以便可以轻松地从部分中检索它。是的，我把它叫做 shepherdErrors，这是我的主意，所以我可以给这个概念起任何我想要的愚蠢的名字！将错误代码引导到它们应该在的位置或一般的想法。

在助手类中：

public class ModelStateHelper
{
    public static IEnumerable<KeyValuePair<string, string>> 
         AllErrors(ModelStateDictionary modelState)
    {
        var result = new List<KeyValuePair<string, string>>();
        var erroneousFields = modelState.Where(ms => ms.Value.Errors.Any())
                                        .Select(x => new { x.Key, x.Value.Errors });

        foreach (var erroneousField in erroneousFields)
        {
            var fieldKey = erroneousField.Key;
            var fieldErrors = erroneousField.Errors
                               .Select(error => new KeyValuePair<string, string>(fieldKey, error.ErrorMessage)); //Error(fieldKey, error.ErrorMessage));
            result.AddRange(fieldErrors);
        }

        return result;
    }
}

然后在加载 jquery 后的某个 html 页面上：

function displayShepherdErrors() {
    var shepherdErrors = JSON.parse('@(Newtonsoft.Json.JsonConvert.SerializeObject(TempData["shepherdErrors"]))'.replace(/&quot;/g, '"'));
    var frm;
    var isShepherdErrors = (shepherdErrors && shepherdErrors.length > 0);
    if (isShepherdErrors) {
        errObj = {};
        for (var i = 0; i < shepherdErrors.length; i++) {
            var errorKey = shepherdErrors[i].Key;   //also the id of the field
            var errorMsg = shepherdErrors[i].Value;
            var reg = new RegExp('^' + errorKey + '$', 'gi');
            //find the selector - we use filter so we can find it case insensitive
            var control = $('input').filter(function () {
                if ($(this).attr('id'))
                    return $(this).attr('id').match(reg);
            });

            if (control && control.length) {
                control = control[0];
                var controlId = $(control).attr('name');
                errObj[controlId] = errorMsg;

                //get the containing form of the first input element
                if (!frm)
                    frm = control.form;
            }
        }
        var validator = $(frm).validate();
        validator.showErrors(errObj);
    }
    return isShepherdErrors;
}

var isShepherdErrors = displayShepherdErrors();

如果生成的文本框是基于变量名的，这应该可以在一般 MVC 开发中开箱即用——这是 MVC 的默认行为。

于 2018-05-26T13:04:16.120 回答