Question

我有一个表示项目的表单。表单包含一个提交按钮。如果单击提交按钮，则应对这些字段进行验证不引人注意的验证。

如果验证失败，则不会发生任何其他事情。

如果验证通过，则应将该项添加到Knockout.js observedArray集合中。

在这两种情况下，整个过程应保留在客户端，而无需提交给服务器。提交和服务器端验证将在流程的后期进行。

如何达到预期效果？

我正在使用ASP.Net MVC和Data Annotations。我不想在客户端手动复制验证逻辑。

我还应该提到我在同一页面上有几种形式。

这是我迄今为止所做的......

这是我的ASP.Net MVC布局文件：

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>@ViewBag.Title - JC Guns Online</title>


    @*---------- Stylesheets ----------*@

    @Styles.Render("~/Content/Bootstrap/bootstrap-theme.css")
    @Styles.Render("~/Content/MightyIT/bootstrap_customizations.css")
    @Styles.Render("~/Content/site.css")
    @Styles.Render("~/Content/MightyIT/custom_styles.css")
    @Styles.Render("~/Content/MightyIT/callout.css") 
    @Styles.Render("~/Content/font-awesome-4.0.3/css/font-awesome.min.css")
    @RenderSection("css", required: false)


</head>
<body>

    <div class="navbar navbar-default navbar-fixed-top">
        <div class="container">
            <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
            </button>
        </div>
        <div class="navbar-collapse collapse">
            <ul class="nav navbar-nav">

                <li>@Html.ActionLink("Home", "Index", "Home")</li>
                <li>@Html.ActionLink("Contact", "Contact", "Home")</li>
                @*<li>
                    @using (Html.BeginForm())
                    {
                        <input id="txtQuickSearch" type="text" class="form-control col-lg-8" placeholder="Search">
                        <img src="~/Content/img/search_32.png" />
                    }
                </li>*@
            </ul>
            @Html.Partial("_LoginPartial")
        </div>
    </div>
    <div class="container body-content">
        <br />
        @RenderBody()

        <br /><br />
        <nav class="navbar navbar-default navbar-fixed-bottom">
            <div style="text-align:center">
                <img src="~/Content/img/logo_small.png" class="img-responsive" />
                <sub style="position:absolute; right:10px; bottom:10px;">&copy; @DateTime.Now.Year </sub>
            </div>
        </nav>
    </div>

    @*---------- Javascripts ----------*@

    @Scripts.Render("~/bundles/jquery")
    @Scripts.Render("~/bundles/modernizr")
    @Scripts.Render("~/bundles/bootstrap")
    @Scripts.Render("~/Scripts/KnockOut/knockout-3.0.0.js")
    @Scripts.Render("~/Scripts/JQuery/jquery.unobtrusive-ajax.js")
    @Scripts.Render("~/Scripts/JQuery/jquery.validate.js")
    @Scripts.Render("~/Scripts/JQuery/jquery.validate.unobtrusive.js")
    @Scripts.Render("~/Scripts/JQuery/jquery.callout.unobtrusive.js")   
    @Scripts.Render("~/Scripts/MVCFoolProof/mvcfoolproof.unobtrusive.js")    
    @RenderSection("scripts",false)
</body>
</html>

以下是我目前正在处理的相关部分的代码（有几个类似的部分将放在同一页面上）：

<form id="AddCrimeForm">
    <div class="panel panel-success">
        <div class="panel-heading">
            <div class="form-horizontal">
                <div class="row">
                    <div class="col-lg-11">Add a crime incident to the list</div>
                    <div class="col-lg-1">
                        <button type="submit" class="btn btn-success btn-xs" onclick="addCrime();"><i class="fa fa-plus"></i> Add</button>
                    </div>
                </div>
            </div>
        </div>

        <div class="panel-body">
            <div class="form-horizontal">
                <div class="row">
                    <div class="col-lg-6">
                        <input data-val="true" data-val-number="The field Id must be a number." data-val-required="The Id field is required." id="Id" name="Id" type="hidden" value="">
                        <div class="form-group">
                            <label class="control-label col-md-4" for="CaseNumber">Case Number</label>
                            <div class="col-md-8">
                                <input class="form-control text-box single-line" data-val="true" data-val-required="The Case Number field is required." id="CaseNumber" name="CaseNumber" type="text" value="">
                                <span class="field-validation-valid" data-valmsg-for="CaseNumber" data-valmsg-replace="true"></span>
                            </div>
                        </div>
                        <div class="form-group">
                            <label class="control-label col-md-4" for="DateOfIncident">Date Of Incident</label>
                            <div class="col-md-8">
                                <input class="form-control text-box single-line valid" data-val="true" data-val-required="The Date of Incident field is required." id="DateOfIncident" name="DateOfIncident" type="date" value="">
                                <span class="field-validation-valid" data-valmsg-for="DateOfIncident" data-valmsg-replace="true"></span>
                            </div>
                        </div>
                    </div>
                    <div class="col-lg-6">
                        <div class="form-group">
                            <label class="control-label col-md-4" for="Description">Description</label>
                            <div class="col-md-8">
                                <textarea class="form-control text-box multi-line" data-val="true" data-val-required="The Description field is required." id="Description" name="Description"></textarea>
                                <span class="field-validation-valid" data-valmsg-for="Description" data-valmsg-replace="true"></span>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</form>

<table class="table table-striped table-hover " id="CrimeList">
    <thead>
        <tr>
            <th>Case Number</th>
            <th>Date of Incident</th>
            <th>Description</th>
            <th></th>
        </tr>
    </thead>
    <tbody data-bind="foreach: items">
        <tr>
            <td data-bind="text: $data.CaseNumber">Column content</td>
            <td data-bind="text: $data.DateOfIncident">Column content</td>
            <td data-bind="text: $data.Description" style="text-wrap: normal">Column content</td>
            @*<td></td>
                <td></td>
                <td></td>*@
            <td>...</td>
        </tr>
    </tbody>
</table>

以下是client_crime_kjs.js的代码，包含我所有的KnouckoutJS视图模型代码：

$(document).ready(
    function ()
    {

        var Crime = function(CaseNumber, DateOfIncident, Description)
        {
            this.CaseNumber = CaseNumber;
            this.DateOfIncident = DateOfIncident;
            this.Description = Description;
        }

        var initialData = new Array();

        var crimes = function (items)
        {
            var self = this;
            //Data
            self.items = ko.observableArray(items)

            //operations
            self.addCrime = function()
            {
                if ($("#AddCrimeForm").valid()) {
                    self.crime = new Crime($("#CaseNumber").val(), $("#DateOfIncident").val(), $("#Description").val());
                    //var JSONObj = { CaseNumber: $("#CaseNumber").val(), DateOfIncident: $("#DateOfIncident").val(), Description: $("#Description").val() };
                    self.items.push(this.crime);
                }

                //$("#CaseNumber").val() = "";
                //$("#DateOfIncident").val() = "";
                //$("#Description").val() = "";

            }

        }

        ko.applyBindings(crimes(initialData), $("#CrimeList")[0])
    }
);

基本上发生的是在这个阶段，当字段无效时，表单不提交（正确地如此），但是当它确认它确实提交时（违反我的要求），并且我的KO observablearray随后重置

Answer 1

所以我得到了上述问题的答案。诀窍是设置按钮类型=“按钮”而不是“提交”。

所以，对于任何正在努力解决这个问题的人来说，这里有一个如何让它发挥作用的例子......

你的淘汰赛ViewModel：

$(document).ready(
    function () {

        var Crime = function (CaseNumber, DateOfIncident, Description) {
            this.CaseNumber = CaseNumber;
            this.DateOfIncident = DateOfIncident;
            this.Description = Description;
        }

        var crimes = function (items) {
            var self = this;
            //Data
            self.items = ko.observableArray(items)

            //operations
            self.addCrime = function () {
                if ($("#AddCrimeForm").valid()) {
                    self.crime = new Crime($("#CaseNumber").val(), $("#DateOfIncident").val(), $("#Description").val());
                    //var JSONObj = { CaseNumber: $("#CaseNumber").val(), DateOfIncident: $("#DateOfIncident").val(), Description: $("#Description").val() };
                    self.items.push(this.crime);

                    $("#CaseNumber").val("");
                    $("#DateOfIncident").val("");
                    $("#Description").val("");
                }
            }

            self.removeCrime = function (item) {
                self.items().remove(item);
            }

        }

        var initialData = new Array();
        ko.applyBindings(crimes(initialData), $("#CrimeList")[0])
    }
);

这是相应的HTML：

<form id="AddCrimeForm">
    <div class="panel panel-success">
        <div class="panel-heading">
            <div class="form-horizontal">
                <div class="row">
                    <div class="col-lg-11">Add a crime incident to the list</div>
                    <div class="col-lg-1">
                        <button type="button" class="btn btn-success btn-xs" onclick="addCrime();"><i class="fa fa-plus"></i> Add</button>
                    </div>
                </div>
            </div>
        </div>

        <div class="panel-body">
            <div class="form-horizontal">
                <div class="row">
                    <div class="col-lg-6">
                        <input data-val="true" data-val-number="The field Id must be a number." data-val-required="The Id field is required." id="Id" name="Id" type="hidden" value="">
                        <div class="form-group">
                            <label class="control-label col-md-4" for="CaseNumber">Case Number</label>
                            <div class="col-md-8">
                                <input class="form-control text-box single-line" data-val="true" data-val-required="The Case Number field is required." id="CaseNumber" name="CaseNumber" type="text" value="">
                                <span class="field-validation-valid" data-valmsg-for="CaseNumber" data-valmsg-replace="true"></span>
                            </div>
                        </div>
                        <div class="form-group">
                            <label class="control-label col-md-4" for="DateOfIncident">Date Of Incident</label>
                            <div class="col-md-8">
                                <input class="form-control text-box single-line valid" data-val="true" data-val-required="The Date of Incident field is required." id="DateOfIncident" name="DateOfIncident" type="date" value="">
                                <span class="field-validation-valid" data-valmsg-for="DateOfIncident" data-valmsg-replace="true"></span>
                            </div>
                        </div>
                    </div>
                    <div class="col-lg-6">
                        <div class="form-group">
                            <label class="control-label col-md-4" for="Description">Description</label>
                            <div class="col-md-8">
                                <textarea class="form-control text-box multi-line" data-val="true" data-val-required="The Description field is required." id="Description" name="Description"></textarea>
                                <span class="field-validation-valid" data-valmsg-for="Description" data-valmsg-replace="true"></span>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</form>

<table class="table table-striped table-hover " id="CrimeList">
    <thead>
        <tr>
            <th>Case Number</th>
            <th>Date of Incident</th>
            <th>Description</th>
            <th></th>
        </tr>
    </thead>
    <tbody data-bind="foreach: items">
        <tr>
            <td data-bind="text: $data.CaseNumber">Column content</td>
            <td data-bind="text: $data.DateOfIncident">Column content</td>
            <td data-bind="text: $data.Description" style="text-wrap: normal">Column content</td>
            @*<td></td>
                <td></td>
                <td></td>*@
            <td>...</td>
        </tr>
    </tbody>
</table>

再一次 - 注意“添加”按钮的类型已设置为“按钮”而不是“提交”。

希望这有助于你所有人编写窥视的其余部分！

Answer 2

我正在尝试做类似的事情。

我在开始时的想法和你的想法一样，但后来我做了一些修改，因为很难用数据注释进行复杂的验证。复杂意味着记录不会在数据库上重复，也不会在输入上重复自定义格式。

所以我去了FluentValidation，问题是流畅的验证并不总是在不显眼的验证中工作。所以我现在正在做的就是这个。

希望这对您有所帮助，如果您发现可能更好的东西，请告诉我们：

我的模型及其验证：

    public class BUCashFlow
{
    public int Id { get; set; }
    [Display(Name = "Concepto")]
    public string Text { get; set; }
    [Display(Name = "Valor")]
    public double Value { get; set; }
    public CashFlowType CashFlowType { get; set; }
    [Display(Name = "Cuenta")]
    public int AccountId { get; set; }
    public string User { get; set; }

    public virtual Account Account { get; set; }
}

public class BuCashFlowVal : AbstractValidator<BUCashFlow>
{
    public BuCashFlowVal()
    {

        RuleFor(p => p.Text)
            .NotEmpty().WithMessage(ValHelper.Messages.Required);
        RuleFor(p => p.Value)
            .NotEmpty().WithMessage(ValHelper.Messages.Required);
        RuleFor(p => p.AccountId)
            .NotEmpty().WithMessage(ValHelper.Messages.Required);
    }
}

我也在使用web api，所以这是我的web api控制器，我在那里验证我的新BUCashFlow模型

        // POST api/BUCashFlows
    [ResponseType(typeof(BUCashFlow))]
    public IHttpActionResult PostBUCashFlow(BUCashFlow bucashflow)
    {
        ValidationResult ValRes = new BuCashFlowVal().Validate(bucashflow);
        if (!ValRes.IsValid)
        {
            return BadRequest(ValRes.Errors[0].ErrorMessage);
        }
        bucashflow.User = User.Identity.GetUserId();
        bucashflow.CashFlowType=CashFlowType.Purchase;
        db.BuCashFlows.Add(bucashflow);
        db.SaveChanges();

        return CreatedAtRoute("DefaultApi", new { id = bucashflow.Id }, bucashflow);
    }

最后以js / ko显示我的错误我正在这样做：

            self.addExpense = function(selector) {
            $.ajax({
                type: 'POST',
                url: '@ViewBag.ApiBUExpenses',
                data: $(selector).serialize()
            }).done(function(o) {
                self.expenses.push(new ExpenseVM(self, o.Id, o.Text, o.Value, o.AccountId));
            }).fail(function (o) {
                $(selector).find('.val').html(  '<div class="alert alert-warning alert-dismissable">' +
                                                    '<button type="button" class="close" data-dismiss="alert" aria-hidden="true">&times;</button>' +
                                                    '<strong>Warning!</strong> ' + o.responseJSON.Message +
                                                '</div>');
            });
        };

和我在这个ajax Call中序列化的html表单：

            <form id="new-expense-form" data-bind="submit: addExpense">
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
                <h4 class="modal-title" id="myModalLabel">Agregar Nuevo Gasto</h4>
            </div>
            <div class="modal-body">
                <div class="form-group">
                    <label class="control-label">Concepto</label>
                    <input name="Text" type="text" class="form-control" />
                </div>
                <div class="form-group">
                    <label class="control-label">Valor</label>
                    <input name="Value" type="text" class="form-control" />
                </div>
                <div class="form-group">
                    <label class="control-label">Cuenta</label>
                    <i data-bind="visible: isLoadingAccounts" class="fa fa-refresh fa-spin pull-right"></i>
                    <select name="AccountId" class="form-control" data-bind="options: accounts, optionsText: 'name', optionsValue: 'Id', optionsCaption: 'Cuenta'"></select>
                </div>
                <div class="val"></div>
            </div>
            <div class="modal-footer">
                <button class="btn btn-default-pnl btn-circle-m" title="Guardar Gasto">
                    <i class="fa fa-check"></i>
                </button>
            </div>
        </form>

您对此方法有何看法？

如果FoolProof按预期工作

感谢您分享这个库，现在如果这样可行，您只需要以这种方式更改ajax调用：

self.addExpense = function(selector) {
    $(selector).validate()
    if ($(selector).valid()) {
            $.ajax({
                type: 'POST',
                url: '@ViewBag.ApiBUExpenses',
                data: $(selector).serialize()
            }).done(function(o) {
                self.expenses.push(new ExpenseVM(self, o.Id, o.Text, o.Value, o.AccountId));
            })
    }
};

更新

我看到了你的图书馆，我觉得它不会有用，如果没有，你总是可以复制你的验证并使用KnockoutValidation

在没有表单提交的情况下执行不显眼的JQuery表单验证

2 个答案:

如果FoolProof按预期工作

更新