添加到数据库。刷新时不重复 [英] Adding to database. No repeat on refresh

问题描述

我有这个代码：

Episode.php

Episode.php

    <?$feedback = new feedback;
$articles = $feedback->fetch_all();

      if (isset($_POST['name'], $_POST['post'])) {
             $cast = $_GET['id'];
             $name = $_POST['name'];
             $email = $_POST['email'];
             $post = nl2br ($_POST['post']);
             $ipaddress = $_SERVER['REMOTE_ADDR'];

if (empty($name) or empty($post)) {
             $error = 'All Fields Are Required!';
}else{
$query = $pdo->prepare('INSERT INTO comments (cast, name, email, post, ipaddress) VALUES(?, ?, ?, ?, ?)');
     $query->bindValue(1, $cast);
     $query->bindValue(2, $name);
     $query->bindValue(3, $email);
     $query->bindValue(4, $post);
     $query->bindValue(5, $ipaddress);

     $query->execute();
} }?>
<div align="center">
<strong>Give us your feedback?</strong><br /><br />

<?php if (isset($error)) { ?>
     <small style="color:#aa0000;"><?php echo $error; ?></small><br /><br />
<?php } ?>

<form action="episode.php?id=<?php echo $data['cast_id']; ?>" method="post" autocomplete="off" enctype="multipart/form-data">
<input type="text" name="name" placeholder="Name" /> / <input type="text" name="email" placeholder="Email" /><small style="color:#aa0000;">*</small><br /><br />
<textarea rows="10" cols="50" name="post" placeholder="Comment"></textarea><br /><br />
<input type="submit" onclick="myFunction()" value="Add Comment" />
<br /><br />
<small style="color:#aa0000;">* <b>Email will not be displayed publicly</b></small><br />
</form>

</div>

Include.php

Include.php

class feedback { public function fetch_all(){
    global $pdo;
      $query = $pdo->prepare("SELECT * FROM comments");
      $query->bindValue(1, $cast);
      $query->execute(); return $query->fetchAll();
              } }

这个代码根据它来更新到数据库。但是在提交后，它会重新加载当前页面，如表单操作中所述。

This code updates to the database as it is suppose to. But after submission it reloads the current page as mentioned in the form action.

但是当我刷新页面以查看添加的评论时，它要求重新提交。如果我提交，则该评论再次添加。

But when I refresh the page to see the comment being added it asks to re submit. If I hit submit then the comment adds again.

如何阻止这种情况发生？

How can I stop this from happening?

也许我可以隐藏评论框并显示谢谢消息，但不会停止重复输入。

Maybe I could hide the comment box and display a thank you message but that would not stop a repeat entry.

请帮忙。谢谢。

Kev

推荐答案

您需要在其中添加重定向。因此，在POST块的底部添加

You need to add a redirect in there. So at the bottom of your POST block add

if(isset($_POST['name'], $_POST['post'])) {
    // Do POST stuff here

    header('Location: your/url/here');
    exit;
}

这将发送一个302重定向到浏览器，它执行一个干净的负载页。由于这是一个GET操作，所以也没有重新加载问题。

This sends a 302 redirect to the browser and it does a clean load of the page. Since this is a GET operation, there's no reload issues either.

这篇关于添加到数据库。刷新时不重复的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！