如何响应jQuery Validation remote? [英] How to respond to jQuery Validation remote?

问题描述

查看了多个SO问题和手册，但找不到它.当我有

Looked at multiple SO questions and the manual, but can't find it out. When I have

$( "#myform" ).validate({ 
    rules: {
    email: {
      required: true,
      email: true,
      remote: "check-email.php"
    }
  }
});

我的check-email.php应该如何回应?我已经尝试过echo "true"，echo true，echo {error: true}，但是没有给出正确的错误消息.

How should my check-email.php respond? I already tried echo "true", echo true, echo {error: true}, but it's not giving the right error message.

编辑

我目前将我的php设置为:

I currently have my php set up as:

$query = mysql_query("SELECT id FROM users WHERE email='".$_POST['email']."'") or die (mysql_error());
if(mysql_num_rows($query)!=0){
echo json_encode(false);
}else{
echo json_encode(true);
}

但是，它总是返回true ...

However, it's always returning true...

推荐答案

引用OP:

我的check-email.php应该如何回应?我已经尝试过echo "true"， echo true，echo {error: true}，但未给出正确的错误 消息.

How should my check-email.php respond? I already tried echo "true", echo true, echo {error: true}, but it's not giving the right error message.

这是因为true不会触发错误消息...这是相反的响应.

That's because true will not trigger an error message... it is the opposite response.

• true是有效时的正确响应(无错误消息).

• true is the proper response for when it's valid (no error message).

如果响应为false，null，undefined或字符串(错误消息)，则该字段被评估为无效.

If the response is false, null, undefined, or a string (error message) the field is evaluated as invalid.

引用标题:

如何响应jQuery Validation remote?

How to respond to jQuery Validation remote?

您应该阅读文档:

服务器端资源通过jQuery.ajax(XMLHttpRequest)和 获取与已验证名称对应的键/值对 元素及其值作为GET参数. 响应的评估为 JSON和对于有效元素，必须为true，并且可以为任意false， undefined或null用于无效元素，使用默认消息；或者 字符串，例如该名称已被使用，请尝试peter123" 显示为错误消息.

The serverside resource is called via jQuery.ajax (XMLHttpRequest) and gets a key/value pair corresponding to the name of the validated element and its value as a GET parameter. The response is evaluated as JSON and must be true for valid elements, and can be any false, undefined or null for invalid elements, using the default message; or a string, eg. "That name is already taken, try peter123 instead" to display as the error message.

---

编辑:

根据编辑和评论...

As per edits and comments...

• OP在他的PHP中使用$_POST['email'].但是，以上文档指出remote方法默认情况下使用GET.

• OP is using $_POST['email'] in his PHP. However, the documentation above states that the remote method uses GET by default.

如果您要自定义错误消息，则需要遵循上述文档...因此在您的PHP中，而不是返回false ...构造消息并在字符串中返回. /p>

If you want a customized error message, then you need to follow the documentation above... so within your PHP, instead of returning false... construct the message and return it within a string.

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