使用远程验证多个字段验证 [英] Multiple fields validation using Remote Validation

问题描述

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行动将检查是否有对cardNumber为名字和姓氏的结合现有记录。

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

如果用户首先会输入卡号，然后他的名字，我不能确认他，所以当他返回和输入他的名字，我需要远程再次验证，我该怎么做，当焦点已经从cardnu​​mber遗失的财物？

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

拓展上Jaluka的回答，我写了认定，都有每个远程验证元素这个辅助方法附加字段，然后导致验证上所述元件火每个时间这些领域的变化之一。

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();
            });
        });
    });
}

调用函数像这样：

Call the function like so:

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

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