jQuery验证–选中复选框时检查输入值 [英] jQuery Validation – check input value when checkbox checked

问题描述

我有一个电话号码输入字段，其中包含SMS更新选项.我想检查一下，当"SMS"复选框被选中时，该号码是手机号码.我已经使用了正则表达式，并且正在验证，但是即使未选中此复选框也显示了"mobile require"错误.

I've got an input field for a phone number with the option for SMS updates. I want to check that when the SMS checkbox is checked that the number is a mobile number. I've got the regex working, and this is validating, but have got the 'mobile require' error showing even when then check box isn't checked.

$.validator.addMethod(
      "regex",
      function(value, element, regexp) {
        if($('#receive_sms_updates').is(':checked')) {
          var check = false;
          var re = new RegExp(regexp);
          return this.optional(element) || re.test(value);
        } 
      }, "Mobile Required"
    );


    $("form#patient-detials").validate({
      rules: {
        'patient[person_attributes][phone_mobile]': {
          maxlength: 10,
          minlength: 10,
          digits: true,
          regex: "^04[0-9]{8}" 
        }
      }
    });

推荐答案

更新(来自下面的评论).

Update (from your comment below).

如果未输入 if ，则不会从自定义规则返回true，从技术上讲，这会导致 undefined 返回给调用方(这是 falsey 值).如下更新您的规则:

You aren't returning true from your custom rule if the if isn't entered, which technically results in undefined being returned to the caller (which is a falsey value). Update your rule as follows:

$.validator.addMethod("regex", function(value, element, regexp) {
    if ($('#receive_sms_updates').is(':checked')) {
        var check = false;
        var re = new RegExp(regexp);
        return this.optional(element) || re.test(value);
    }
    return true;
}, "Mobile Required");

将本部分保留下来，因为它可能对其他人有用:

我将更新您的验证呼叫和规则，如下所示:

I would update your validate call and rule as follows:

$.validator.addMethod("regex", function(value, element, regexp) {
    var re = new RegExp(regexp);
    return this.optional(element) || re.test(value);
}, "Mobile Required");

$("form#patient-detials").validate({
    rules: {
        'patient[person_attributes][phone_mobile]': {
            maxlength: 10,
            minlength: 10,
            digits: true,
            regex: "^04[0-9]{8}",
            required: "#receive_sms_updates:checked"
        }
    }
});

如您所见， required 属性采用"dependency-expression"，用于确定是否需要移动字段(基于 #receive_sms_updates 已选中).

As you can see, the required property takes a "dependency-expression" which is used to determine whether or not the mobile field is required (based on whether or not #receive_sms_updates is checked).

这里是一个示例: http://jsfiddle.net/andrewwhitaker/ED6cX/

要进一步走一小步，我建议从规则本身中删除"Mobile Required"方法(毕竟，您想要一个可重用的regex规则)，并将其放置在 messages 属性.像这样:

To take it just one small step further, I would recommend removing the "Mobile Required" method from the rule itself (you want a re-usable regex rule after all), and place it on the messages property on your validate call. Something like:

$.validator.addMethod("regex", function(value, element, regexp) {
    var re = new RegExp(regexp);
    return this.optional(element) || re.test(value);
});

$("form#patient-detials").validate({
    rules: {
        'patient[person_attributes][phone_mobile]': {
            maxlength: 10,
            minlength: 10,
            digits: true,
            regex: "^04[0-9]{8}",
            required: "#receive_sms_updates:checked"
        }
    },
    messages: {
        'patient[person_attributes][phone_mobile]': {
            required: "Mobile Required",
            regex: "Please enter a valid mobile number"
        }
    }
});

示例: http://jsfiddle.net/andrewwhitaker/5BVCK/

通过这种方式，您不会以特定的形式限制验证规则(该验证规则足够通用，可以应用于其他字段).

This way you aren't restricting your validation rule (which is generic enough that it could apply to other fields) with a particular form.

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