通过Ajax时，标头不会重定向 [英] Header wont redirect when passedthrough ajax

问题描述

不确定是否可行，但是我有一个页面使用AJAX提交表单，如果满足某些条件，它将自动将用户带到另一个页面.在标题标记之前，仅输出一堆条件就输出NOTHING.

Not sure if this is possible but I have a page that submits a form with AJAX and if it meets certain conditions it should automatically take the user to another page. NOTHING is outputted before the header tag its just a bunch of conditions.

问题:标题重定向不起作用...

Problem: Header redirect not working...

AJAX

$('form').on('submit', function (e) {
   e.preventDefault();
   $.ajax({
     type: 'post',
     url: '_ajax/add.php',
     data: $('form').serialize(),
     success: function (data) {
       $("input").val('Company Name');
       $("form").hide();
       getInfo();
     }
   });
});

add.php

$row = mysqli_fetch_array($result);
$id = $row['id'];
header("Location: http://localhost/manage/card.php?id=$id");

推荐答案

您在问题中指出，在某些条件下，您需要重定向.

You indicate in the question that under certain conditions, you want a redirect.

为此，您需要更改JavaScript以包含if条件，并注意某些响应.

To do that, you would want to alter your javascript to contain an if condition, and to watch for certain responses.

我建议将您的响应修改为json，以便您可以传回不同的信息(例如成功状态，重定向URL或您可能需要的其他信息).

I would recommend modifying your responses to be json, so that you can pass back different information (such as a success status, as well as a redirect url, or other information you might want).

 $('form').on('submit', function (e) {
   e.preventDefault();
   $.ajax({
     type: 'post',
     url: '_ajax/add.php',
     data: $('form').serialize(),
     success: function (data) {
       var response = $.parseJSON(data);
       if (response.redirect) {
           window.location = response.redirect_url;
       } else {
           $("input").val('Company Name');
           $("form").hide();
           getInfo();
       }
     }
   });
});

对于您的add.php文件，您需要将其更改为类似以下内容:

As for your add.php file, you'll want to change this to be something more like so:

$json = array(
    'redirect' => 0,
    'url'      => '',
}

if (...condition for redirect...) {
    $row = mysqli_fetch_array($result);
    $id = $row['id'];
    $json['redirect'] = 1;
    $json['redirect_url'] = "Location: http://localhost/manage/card.php?id=$id";
}
echo json_encode($json);
die();

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