KnockoutJS实时验证本地化

Question

我正在尝试本地化KnockoutJS验证插件,但我需要能够在运行中切换语言.这个插件有一个问题,但它已经超过2年了(并且仍然开放).

我只是想做的是在加载所有内容后切换验证消息的语言.这是一个例子(可以在小提琴上看到:http://jsfiddle.net/Kikketer/S6j2q/)

<input data-bind='value: phone' />
<div data-bind="text: phone"></div>
<button type='button' data-bind="click: v">Validate</button>
<button type='button' data-bind='click: switchLanguage'>Switch Language</button>

使用以下JS:

ko.validation.configure({
    registerExtenders: true
});
// If I localize right away, things work
ko.validation.localize({required: '**Required'});

var InterviewTwo = function() {
    // Standard "required" validator
    this.phone = ko.observable().extend({required: true});

    // Group all of the validators
    this.errors = ko.validation.group(this);

    // Validation function
    this.v = function() {
        this.errors.showAllMessages();
    };

    // Switching languages after or before the validation
    this.switchLanguage = function() {
        // If I localize later, nothing is changed.
        ko.validation.localize({required: 'eh... sorta?'});
        ko.validation.registerExtenders();
    };
};

ko.applyBindings(new InterviewTwo());

我注意到在淘汰代码中,错误的getter方法总是返回第一个本地化错误字符串.如何"重新初始化"错误字符串？

来自KnockoutJS第736行:

var errorMsgAccessor = function () {
    if (!config.messagesOnModified || isModified) {
        return isValid ? null : obsv.error; <<<< obsv.error is always the first error message
    } else {
        return null;
    }
};

Answer 1

您的代码会更新本地化，但新消息仅在下一次更新时有效。

将 switchLanguage 替换为：

this.switchLanguage = function() {
    // If I localize later, nothing is changed.
    ko.validation.localize({required: 'eh... sorta?'});
    for (var prop in this)
        if (ko.isObservable(this[prop]) && typeof(this[prop].valueHasMutated) === 'function')
            this[prop].valueHasMutated();        
};

小提琴