我怎样才能销毁AUI-Form-Validator,所以我只有一个实例

时间:2014-06-06 15:10:16

标签: validation yui destroy alloy-ui

我正在使用Alloy UI和YUI3,并且有一个表单,根据选择下拉列表中的用户选项选项,激活对服务器的ajax调用。服务器返回新的验证规则,我将其发送到AUI-Form-Validation模块。规则正在改变,但表单正在输出重复的规则。也就是说,不替换表单验证实例,而是附加到旧表单,因此我在broswer中有重复的错误字段字符串。 我想我需要销毁所有实例,但最新但似乎无法实现这一点。如何销毁/更新旧表单验证,以便我只在DOM中显示最新内容?

这是我的代码(我正在使用on.failure进行本地测试):

<!DOCTYPE html>
<html>
<head>
    <title>Form Validation</title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link href="http://cdn.alloyui.com/2.5.0/aui-css/css/bootstrap.min.css" rel="stylesheet" />
</head>
<body>

    <div class="container-fluid">
        <div class="row-fluid">
            <div class="span12">

                <form id="myForm">

                    <select id="card-type" name="card-type" class="select_card_type">
                        <option value="7" selected="selected" label="Seven"></option>
                        <option value="2" label="Two"></option>
                        <option value="5" label="Five"></option>
                    </select>

                    <div class="control-group card_number">
                        <label class="control-label" for="cardNumber">Card number</label>
                        <div class="controls">
                            <input name="cardNumber" id="cardNumber" type="text" />
                        </div>
                    </div>

                    <div class="control-group csc">
                        <label class="control-label" for="picture">Card security code</label>
                        <div class="controls">
                            <input name="csc" id="csc" type="text">
                        </div>
                    </div>

                    <input class="btn btn-info" type="submit" value="Submit">

                </form>
            </div><!--/span-->
        </div><!--/row-->

        <hr>

        <footer>
            <p>&copy; Company 2013</p>
        </footer>

    </div><!--/.fluid-container-->

    <script src="http://cdn.alloyui.com/2.5.0/aui/aui-min.js"></script>
    <script>
        YUI().use('node', 'node-base', 'event', 'transition', 'aui-io-request', 'json-parse', 'aui-form-validator', function(Y) {

            var rules;
            function Validator(rules) {
                this.rules = rules;
                this.fieldStrings = {
                    cardNumber: {
                        required: 'Type your card number in this field.'
                    },
                    csc: {
                        required: 'Please provide your csc.'
                    }
                };

                this.val = new Y.FormValidator(
                    {
                        boundingBox: '#myForm',
                        fieldStrings: this.fieldStrings,
                        validateOnInput: true,
                        rules: this.rules
                    }
                );
            }
            Y.one('.select_card_type').on('change', function(e) {

                var len = Y.one('#card-type option:checked').get('value');

                Y.io.request('<%= selectProductTypeResource.toString() %>', {
                    method: 'post',
                    on: {
                        failure: function() {
                            rules = {
                                cardNumber: {
                                    required: true,
                                    digits: true,
                                    minLength: len,
                                    maxLength: len
                                },
                                csc: {
                                    required: true,
                                    digits: true,
                                    minLength: len,
                                    maxLength: len
                                }
                            };
                            if (typeof (validator) === 'object') {
                                validator.val.destroy(true); // not working
                            }
                            validator = new Validator(rules);
                        }
                    }
                });
            });
        });</script>
</body>
</html>

2 个答案:

答案 0 :(得分:0)

您没有附加规则,您绑定了多个验证程序。即使您能够清除规则,旧的验证器仍然会被绑定并且不会违反规则进行验证。

为了防止&#34;销毁&#34;它,您可以创建一次验证器,然后相应地修改规则。

AlloyUI使用get/set方法修改属性。

  • 要修改规则,请调用getter - var rules = validator.get('rules') - 然后修改。
  • 要设置新规则,请致电setter:validator.set('rules', {cardNumber: {required: true}})

我已设置an example fiddle进行演示。如果您点击Create New ValidatorSubmit,您会看到与之相同的行为。


github上的aui-form-validator source

答案 1 :(得分:0)

感谢回复origineil,我实施了你所提到的并让它运作起来。我使用setAttrs重置新规则,现在所有规则都按预期工作。这是我的完整工作代码:

YUI().use('node', 'node-base', 'event', 'transition', 'aui-io-request', 'json-parse', 'aui-form-validator', function(Y) {

  var validator = new Y.FormValidator(
   {
     boundingBox: '#myForm',
     validateOnInput: true
   });

  Y.one('.select_card_type').on('change', function(e) {
    var len = Y.one('#card-type option:checked').get('value');
    validator.resetAllFields();

    Y.io.request('<%= selectProductTypeResource.toString() %>', {
                    method: 'post',
                    on: {
                        failure: function() {
                            var rules = {
                                cardNumber: {
                                    required: true,
                                    digits: true,
                                    minLength: len,
                                    maxLength: len
                                },
                                csc: {
                                    required: true,
                                    digits: true,
                                    minLength: len,
                                    maxLength: len
                                }
                            };
                            validator.setAttrs({rules: rules});
                        }
                    }
    });
  });
});