Question

我有以下型号：

public class Customer
{
    public string FirstName {get;set;}

    public string LastName {get; set;}

    [Remote("CardExisting", "Validation", AdditionalFields="FirstName,LastName")
    public string CardNumber {get; set;}
}

CardExisting操作将检查firstName和LastName的cardNumber组合是否存在现有记录。

如果用户首先输入卡号，然后输入他的名字，我无法验证他怎么办？所以当他返回并输入他的名字时我需要再次进行远程验证，如果焦点已经从cardnumber属性丢失了怎么办？？

Answer 1

扩展了Jaluka的答案，我编写了这个辅助方法，找到每个具有“附加字段”的远程验证元素，然后每当其中一个字段发生变化时，就会激活所述元素的验证。

// I hate naming things
function initializeRemotelyValidatingElementsWithAdditionalFields($form) {
    var remotelyValidatingElements = $form.find("[data-val-remote]");

    $.each(remotelyValidatingElements, function (i, element) {
        var $element = $(element);

        var additionalFields = $element.attr("data-val-remote-additionalfields");

        if (additionalFields.length == 0) return;

        var rawFieldNames = additionalFields.split(",");

        var fieldNames = $.map(rawFieldNames, function (fieldName) { return fieldName.replace("*.", ""); });

        $.each(fieldNames, function (i, fieldName) {
            $form.find("#" + fieldName).change(function () {
                // force re-validation to occur
                $element.removeData("previousValue");
                $element.valid();
            });
        });
    });
}

像这样调用函数：

$(document).ready(function() {
    initializeRemotelyValidatingElementsWithAdditionalFields($("#myFormId"));
});

Answer 2

我的工作方式是添加一些JavaScript。

$("#FirstName").change(function () {
        $('#CardNumber').removeData('previousValue');
        $('#CardNumber').valid();
  });

因此，当更改名字时，您将清除卡号中的所有先前值并重新验证卡号。

Answer 3

如果您不想创建客户端脚本：

    public class Customer
    {
        [Remote("CardExisting", "Validation", AdditionalFields = "CardNumber,LastName")]
        public string FirstName { get; set; }
        [Remote("CardExisting", "Validation", AdditionalFields = "FirstName,CardNumber")]
        public string LastName { get; set; }
        [Remote("CardExisting", "Validation", AdditionalFields = "FirstName,LastName")]
        public string CardNumber { get; set; }
    }

并在CardExisting中验证所有字段是否已填写

Answer 4

下面是Chris的辅助方法。这在大多数情况下都很好用，但是如果您的模型有一个前缀，例如'Custom.Address.Line1'。找不到正确的其他字段。我已经使用jquery.validate.unobstructive库中的一些附加逻辑更新了助手，它将正确查找字段。

function getModelPrefix(fieldName) {
    return fieldName.substr(0, fieldName.lastIndexOf(".") + 1);
}

function appendModelPrefix(value, prefix) {
    if (value.indexOf("*.") === 0) {
        value = value.replace("*.", prefix);
    }
    return value;
}

function escapeAttributeValue(value) {
    // As mentioned on http://api.jquery.com/category/selectors/
    return value.replace(/([!"#$%&'()*+,./:;<=>?@\[\\\]^`{|}~])/g, "\\$1");
}

function initializeRemotelyValidatingElementsWithAdditionalFields($form) {
    const remotelyValidatingElements = $form.find("[data-val-remote]");

    $.each(remotelyValidatingElements, function (i, element) {
        var $element = $(element);

        const additionalFields = $element.attr("data-val-remote-additionalfields");

        if (additionalFields.length === 0) return;

        const rawFieldNames = additionalFields.split(",");
        const prefix = getModelPrefix(element.name);

        const fieldNames = $.map(rawFieldNames, function(fieldName) {
            return appendModelPrefix(fieldName, prefix);
        });

        $.each(fieldNames, function (i, fieldName) {
            $form.find(":input").filter("[name='" + escapeAttributeValue(fieldName) + "']").change(function () {
                // force re-validation to occur
                $element.removeData("previousValue");
                $element.valid();
            });
        });
    });
}

使用远程验证进行多个字段验证

4 个答案: