MVC不显眼的验证复选框不起作用

Question

我正在尝试实现this post中提到的代码。换句话说，我正试图在条款和条件复选框上实现不显眼的验证。如果用户未选中该复选框，则应将输入标记为无效。

这是服务器端Validator代码，我添加了：

/// <summary>
/// Validation attribute that demands that a boolean value must be true.
/// </summary>
[AttributeUsage(AttributeTargets.Property, AllowMultiple = false, Inherited = false)]
public class MustBeTrueAttribute : ValidationAttribute
{
    public override bool IsValid(object value)
    {
        return value != null && value is bool && (bool)value;
    }
}

这是模型

[MustBeTrue(ErrorMessage = "You must accept the terms and conditions")]
[DisplayName("Accept terms and conditions")]
public bool AcceptsTerms { get; set; }

这是我的观点：

@Html.EditorFor(x => x.AcceptTermsAndConditions)
@Html.LabelFor(x => x.AcceptTermsAndConditions)
@Html.ValidationMessageFor(x => x.AcceptTermsAndConditions)

这是我用来附加验证器客户端的jQuery：

$.validator.unobtrusive.adapters.addBool("mustbetrue", "required");

然而，客户端脚本似乎没有被踢入。每当我按下提交按钮时，对其他字段的验证都会很好，但是对条款的验证和条件似乎没有起作用。这是我点击提交按钮后代码在Firebug中的样子。

<input type="checkbox" value="true" name="AcceptTermsAndConditions" id="AcceptTermsAndConditions" data-val-required="The I confirm that I am authorised to join this website and I accept the terms and conditions field is required." data-val="true" class="check-box">
<input type="hidden" value="false" name="AcceptTermsAndConditions">
<label for="AcceptTermsAndConditions">I confirm that I am authorised to join this website and I accept the terms and conditions</label>
<span data-valmsg-replace="true" data-valmsg-for="AcceptTermsAndConditions" class="field-validation-valid"></span>

有什么想法吗？我错过了一步吗？这让我闷闷不乐！

提前致谢 小号

Answer 1

您需要在自定义属性上实现IClientValidatable，以便将您在客户端注册的mustbetrue适配器名称与此属性绑定：

[AttributeUsage(AttributeTargets.Property, AllowMultiple = false, Inherited = false)]
public class MustBeTrueAttribute : ValidationAttribute, IClientValidatable
{
    public override bool IsValid(object value)
    {
        return value != null && value is bool && (bool)value;
    }

    public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
    {
        yield return new ModelClientValidationRule
        {
            ErrorMessage = this.ErrorMessage,
            ValidationType = "mustbetrue"
        };
    }
}

---

更新：

完整的工作示例。

型号：

public class MyViewModel
{
    [MustBeTrue(ErrorMessage = "You must accept the terms and conditions")]
    [DisplayName("Accept terms and conditions")]
    public bool AcceptsTerms { get; set; }
}

控制器：

public class HomeController : Controller
{
    public ActionResult Index()
    {
        var model = new MyViewModel();
        return View(model);
    }

    [HttpPost]
    public ActionResult Index(MyViewModel model)
    {
        return View(model);
    }
}

查看：

@model MyViewModel

<script src="@Url.Content("~/Scripts/jquery.validate.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.js")" type="text/javascript"></script>
<script type="text/javascript">
    $.validator.unobtrusive.adapters.addBool("mustbetrue", "required");
</script>

@using (Html.BeginForm())
{
    @Html.CheckBoxFor(x => x.AcceptsTerms)
    @Html.LabelFor(x => x.AcceptsTerms)
    @Html.ValidationMessageFor(x => x.AcceptsTerms)
    <input type="submit" value="OK" />
}

Answer 2

嗅探器，

除了实施Darin的解决方案之外，您还需要修改文件jquery.validate.unobtrusive.js。在此文件中，您必须添加“mustbetrue”验证方法，如下所示：

$jQval.addMethod("mustbetrue", function (value, element, param) {
    // check if dependency is met
    if (!this.depend(param, element))
        return "dependency-mismatch";
    return element.checked;
});

然后（我忘了先添加此内容），您还必须将以下内容添加到jquery.validate.unobtrusive.js：

adapters.add("mustbetrue", function (options) {
    setValidationValues(options, "mustbetrue", true);
});

counsellorben

Answer 3

我不确定为什么这对我不起作用，但我选择使用你的代码并做一些稍微不同的事情。

在我的JavaScript加载中，我添加以下内容，如果您选中该复选框并取消选中它，则会使复选框触发不显眼的验证。另外，如果您提交表格。

$(function () {
        $(".checkboxonblurenabled").change(function () {
            $('form').validate().element(this);
        });
});

您还需要将CSS类添加到复选框中，如此。

@Html.CheckBoxFor(model => model.AgreeToPrivacyPolicy, new { @class = "checkboxonblurenabled"})

所以，我们现在需要连接模型并输入类来处理服务器端验证（我从上面重新使用），但稍微改变了不引人注目的。

以下是扩展IClientValidate的customer属性，如上例所示......

[AttributeUsage(AttributeTargets.Property, AllowMultiple = false, Inherited = false)]
public class MustBeTrueAttribute : ValidationAttribute, IClientValidatable
{
    public override bool IsValid(object value)
    {
        return value != null && value is bool && (bool)value;
    }

    public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
    {
        yield return new ModelClientValidationRule
        {
            ErrorMessage = this.ErrorMessage,
            ValidationType = "mustbetrue"
        };
    }
}

在模型中，object属性设置所需的属性符号

 [MustBeTrue(ErrorMessage = "Confirm you have read and agree to our privacy policy")]
    [Display(Name = "Privacy policy")]
    public bool AgreeToPrivacyPolicy { get; set; }

好的，我们已准备好加入JavaScript。

(function ($) {
    /*
    START CHECK MUST BE TRUE - UNOBTRUSIVE JAVASCRIPT
    START CHECK MUST BE TRUE - UNOBTRUSIVE JAVASCRIPT
    START CHECK MUST BE TRUE - UNOBTRUSIVE JAVASCRIPT
    */
    jQuery.validator.unobtrusive.adapters.add("mustbetrue", ['maxint'], function (options) {
        options.rules["mustbetrue"] = options.params;
        options.messages["mustbetrue"] = options.message;
    });

    jQuery.validator.addMethod("mustbetrue", function (value, element, params) {

        if ($(element).is(':checked')) {
            return true;
        }
        else {
            return false;
        }
    });
    /*
    START CHECK MAX INT - UNOBTRUSIVE JAVASCRIPT
    START CHECK MAX INT - UNOBTRUSIVE JAVASCRIPT
    START CHECK MAX INT - UNOBTRUSIVE JAVASCRIPT
    */



} (jQuery));

这项工作的成果是......好吧。在尝试执行上面建议的答案后查看HTML标记后，我的值都设置为true，但是我选中的复选框是false。所以，我决定让jQuery使用IsChecked

来解决它

Answer 4

对于那些解决方案都不起作用的人：

我正在使用.Net Framework 4和最新的jquery验证脚本文件与Razor MVC 4合作。

在客户端和服务器端实现自定义属性验证后，它仍然无效。无论如何，我的表格正在发布。

所以这是抓住： JQuery验证脚本有一个默认设置，忽略隐藏的标签，其中隐藏的是http://api.jquery.com/hidden-selector/，这通常不会成为问题，但我正在使用的@ Html.CheckBoxFor样式是使用改变显示的CSS3样式定制的如果没有，则会显示复选框的自定义图像，因此它永远不会在复选框上执行验证规则。

我的解决方法是在自定义客户端验证规则声明之前添加此行：

$.validator.defaults.ignore = "";

它的作用是覆盖当前页面中所有验证的忽略设置，注意它现在也可以在隐藏字段上执行验证（副作用）。

Answer 5

<script>
    $(function () {
        $('#btnconfirm').click(function () {
            if ($("#chk").attr('checked') !== undefined ){
                return true;
            }
            else {

                alert("Please Select Checkbox ");
                return false;
            }
        });

    });
</script>
<div style="float: left">
                    <input type="checkbox" name="chk" id="chk"  />
                    I read and accept the terms and Conditions of registration
                </div>
  <input type="submit" value="Confirm"  id="btnconfirm" />

Answer 6

/// <summary> 
///  Summary : -CheckBox for or input type check required validation is not working the root cause and solution as follows
///
///  Problem :
///  The key to this problem lies in interpretation of jQuery validation 'required' rule. I digged a little and find a specific code inside a jquery.validate.unobtrusive.js file:
///  adapters.add("required", function (options) {
///  if (options.element.tagName.toUpperCase() !== "INPUT" || options.element.type.toUpperCase() !== "CHECKBOX") {
///    setValidationValues(options, "required", true);
///    }
///   });
///   
///  Fix: (Jquery script fix at page level added in to check box required area)
///  jQuery.validator.unobtrusive.adapters.add("brequired", function (options) {
///   if (options.element.tagName.toUpperCase() == "INPUT" && options.element.type.toUpperCase() == "CHECKBOX") {
///              options.rules["required"] = true;
///   if (options.message) {
///                   options.messages["required"] = options.message;
///                       }
///  Fix : (C# Code for MVC validation)
///  You can see it inherits from common RequiredAttribute. Moreover it implements IClientValidateable. This is to make assure that rule will be propagated to client side (jQuery validation) as well.
///  
///  Annotation example :
///   [BooleanRequired]
///   public bool iAgree { get; set' }
///    

/// </summary>


public class BooleanRequired : RequiredAttribute, IClientValidatable
{

    public BooleanRequired()
    {
    }

    public override bool IsValid(object value)
    {
        return value != null && (bool)value == true;
    }

    public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
    {
        return new ModelClientValidationRule[] { new ModelClientValidationRule() { ValidationType = "brequired", ErrorMessage = this.ErrorMessage } };
    }
}