jQuery Validate插件，两个字段之一为必填项 [英] jQuery Validate plugin, one out of two fields is required

问题描述

我有一个包含2个字段的表格；手机号码.和电话号码.

I have a form with 2 fields; mobile no. and telephone no.

至少必须填写一个字段，但也可以填写两个字段.

at least 1 of the fields has to be filled in, but both can also be filled.

如果其中一个都不被填充，我需要jquery validate抛出错误.

I need jquery validate to throw an error if none of them are filled only.

我通过以下方式实现了这一目标:

I have achieved this with:

rules: {
            mobile:{
                required: {
                    depends: function(element) {
                        return $("#regTelephone").val() === '';
                    }
                }
            },
            telephone:{
                required: {
                    depends: function(element) {
                        return $("#regMobile").val() === '';
                    }
                }
            }
}  

但是，如果只有一个字段为空，则此字段仍将获得有效"类，我不希望这样做，因为我的有效CSS具有绿色边框(因此，空白字段仍具有绿色边框)

however, if only one field is empty, this field still gets the 'valid' class, which I don't want as my valid css has a green border (so the empty field still gets a green border)

所以:我如何获取为空的字段(假设另一个字段具有值)而不获取有效的类，因此没有绿色边框?

so: how do I get the field which is empty (providing the other has a value) to not get the valid class and therefore the green border?

推荐答案

使用可选的additional-methods.js文件，有一种名为require_from_group的方法可以完全满足您的要求. (您必须至少使用插件的 版本1.11.1以避免过去的错误.)

Using the optional additional-methods.js file, there is a method called require_from_group that does exactly what you request. (You must use at least version 1.11.1 of the plugin in order to avoid a past bug.)

rules: {
    mobile:{
        require_from_group: [1, '.mygroup']
    },
    telephone:{
        require_from_group: [1, '.mygroup']
    }
},
....

1参数是该组中需要多少个参数.在HTML标记中，组中的字段必须包含与第二个参数中指定的class匹配的class.

The 1 parameter is how many from the group are required. In the HTML markup, the fields in your group must contain a class matching the class specified in your second parameter.

<input type="text" class="mygroup" name="mobile" />
<input type="text" class="mygroup" name="telephone" />

工作演示: http://jsfiddle.net/NfcxX/

我的演示还显示了groups选项，该选项将多个错误消息组合为一个.

My demo also shows the groups option which combines the multiple error messages into one.

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