使用远程验证的多字段验证 [英] Multiple fields validation using Remote Validation

问题描述

我有以下模型:

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 操作将检查是否存在用于 firstName 和 LastName 的 cardNumber 组合的现有记录.

CardExisting action will check that there is an existing record for the combination of cardNumber for the firstName and LastName.

如果用户先输入卡号然后他的名字怎么办，我无法验证他，所以当他返回并输入他的名字时我需要再次远程验证，当cardnumber属性已经失去焦点时我该怎么做?

What if user will first enter the card number and then his name, I cant validate him, so when he returns and input his name I need to remote validate again, how can I do that when focus was already lost from cardnumber property?

推荐答案

扩展 Jaluka 的答案，我编写了这个辅助方法，用于查找每个具有附加字段"的远程验证元素，然后对所述元素进行验证以触发每个当这些字段之一发生变化时.

Expanding on Jaluka's answer, I wrote this helper method that finds each remotely validating element that has "additional fields," and then causes validation on said element to fire each time one of those fields changes.

// 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"));
});

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