Question

这让我疯了。通过使用addMethod规则中的ajax到我的验证器，通过php检查我的数据库中是否存在电子邮件地址。我已经确认php文件正在输出＆＃34; true＆＃34;或＆＃34;假＆＃34;在找到电子邮件时是否正确，但即使响应正确且值为false，规则也始终返回true。

这是规则：

 $.validator.addMethod("isExisting", function() {
    var checkemail=$("#email").val();
    console.log('Email: '+checkemail); // shows email populated correctly
    if(checkemail){
        $.ajax({
        type: 'post',
        url: 'checkemail.php',
        data: {email:checkemail,},
        success: function(response){

                console.log(response); // properly returns text "false" when email not found

                var exists = (response=="false") ? false : true;

                console.log('exists = '+exists); // is properly false

                return exists; // returns false
             }
        });
    }
});

在验证器中 - （＆＃34; isExisting＆＃34;错误消息始终弹出，无论电子邮件是否真的存在）：

$("#signupform").validate({
         errorLabelContainer: "#errors",
         errorPlacement: function (error, element) {
            error.insertAfter(element);
        $(element).addClass(errorClass).removeClass(validClass);
         },
         rules: {
           fullname: {
               required: true,
               minlength: 2
                   },
           email: {
               required: true,
               email: true,
               isExisting: true
                   },
           areacode: {
               required: true,
               digits: true,
               minlength: 3
                   },
           prefix: {
               required: true,
               digits: true,
               minlength: 3
                   },
           num: {
               required: true,
               digits: true,
               minlength: 4
                   },
           address: {
               required: true,
                   },
           city: {
               required: true,
                 },
           noRobot: {
               isCaptcha: true,
           }
         },
         messages: {
           fullname: {
               required: "Please enter your full name.<br />",
               minlength: "Please enter your First and Last name.<br />"
                   },
           email: {
               required: "Please enter your email address.<br />",
               email: "Please enter a valid email address.<br />",
               isExisting: "There is already an account with that email address.<br />"
                   },
           areacode: {
               required: "Please enter your areacode.<br />",
               minlength: "Your areacode should be 3 digits. »XXX« XXX-XXXX<br />"
                  },
           prefix: {
               required: "Please enter your phone number prefix.<br />",
               minlength: "Your phone number Prefix should be 3 digits.  XXX »XXX«-XXXX<br />"
               },
           num: {
               required: "Please enter your phone number suffix.<br />",
               minlength: "Your phone number Suffix should be 4 digits. XXX XXX-»XXXX«<br />"
               },
           address: {
               required: "Please enter your Street Address for pick-up service.<br />"
                   },
           city: {
               required: "Please enter your town or city.<br />"
                   },
           noRobot: {
               isCaptcha: "Please verify that your are not a spam Robot.<br />"
                   }
         }
});

我认为＆＃34; isExisting：true＆＃34;只有在从响应返回真值时才会验证为true。（沮丧地抓着头......）

checkemail.php：

else{
    $result = mysqli_query($connect, "SELECT * FROM `customer_info` WHERE `email`='$email' LIMIT 1");
    $num = mysqli_num_rows($result);
    if($num > 0){
        echo "true";
    }
    else {
        echo "false";
    }
}
mysqli_close($connect);

Answer 1

我的理解是，当响应有效时，验证器方法应该返回true。在您的情况下，有效的响应是没有匹配的电子邮件，因此如果AJAX调用返回false，您希望返回true。

使这个方法 isUnused 而不是 isExisting 以避免布尔混淆可能不那么令人困惑，但你也需要更改checkemail.php。 / p>

编辑：忽略上面的答案，我明显误解了这个问题。

我认为真正的问题是异步调用。尝试在ajax调用中设置 async：false 。

addMethod中的Validator Rule始终返回true

1 个答案: