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问AJAX返回整个html --我怎么能只返回一个值？
EN

Stack Overflow用户

提问于 2021-03-04 08:49:26

回答 1查看 49关注 0票数 0

(在第一个混乱的版本之后编辑)

我的AJAX正在返回header.php页面，我只希望它返回$result值0或1。我正在使用ajax调用我的generateTicket.php。在那里我想generateTickets，如果目前没有其他票证的话。如果生成成功，则应返回1，否则返回0。

但目前它正在用我的响应(0或1)返回我的header.php。如何防止返回header.php。

AJAX：

function generateTicket() {
  $.ajax({
    url: 'generateTicket.php',
    type: 'post',
    datatype: "json",
    data: {
      showid: <?php echo $showid ?>,
      seats: <?php echo $seats_json ?>
    },
    success: function(response) {
      alert(response);  
    }
  });
}

generateTicket.php：

<?php 
include('includes/header.php');

//Login prüfen
if (!$loggedIn) {
    header('Location: login.php');
    die();
}

//Variablen init
$userid = $_SESSION['userid'];
$showid = $_POST['showid'];
$seats = $_POST['seats'];
$result = 1;

//Für jeden Sitzplatz ein Ticket generien generieren
foreach($seats as $seat){
    //Datenbank Ticket laden
    $query = "SELECT * FROM  ticket_uebersicht WHERE Sitzplatz LIKE ? AND VorstellungID = ? LIMIT 1";
    $statement = $pdo->prepare($query);
    $statement->execute(array($seat, $showid));
    $row = $statement->fetch();

    //Prüfen ob Ticket exestiert. Wenn ja -> Marktplatzticket -> anpassen. Wenn nein -> Neues Ticket generieren
    if(!$row){
        $code = guidv4();
        $query = "INSERT INTO tickets (code, UserID, VorstellungID, Sitzplatz) VALUES (?,?,?,?)";
        $statement = $pdo->prepare($query);
        $statement->execute(array($code, $userid, $showid, $seat));
        continue;
    }else{
        if($row['marktplatz'] != 0){
            $code = guidv4();
            $marketplace = '0';
            $query = "UPDATE tickets SET UserID = ?, code = ?, marktplatz = ? WHERE Sitzplatz = ? AND VorstellungID = ? AND NOT marktplatz = 0 LIMIT 1";
            $statement = $pdo->prepare($query);
            $statement->execute(array($userid, $code, $marketplace, $seat,  $showid));
            
            if(!($row['UserID'] == -1)){
                $betrag = $row['preis'] - 2;
                $query = "INSERT INTO rueckerstattung (UserID, Betrag) VALUES (?,?)";
                $statement = $pdo->prepare($query);
                $statement->execute(array($row['UserID'], $betrag));
            }
            continue;
        }
        $result =  0; //Fehler
    }
    
}

echo json_encode($result);

//Generieren der Ticket ID (FREMDCODE)
function guidv4($data = null) {
    // Generate 16 bytes (128 bits) of random data or use the data passed into the function.
    $data = $data ?? random_bytes(16);
    assert(strlen($data) == 16);

    // Set version to 0100
    $data[6] = chr(ord($data[6]) & 0x0f | 0x40);
    // Set bits 6-7 to 10
    $data[8] = chr(ord($data[8]) & 0x3f | 0x80);

    // Output the 36 character UUID.
    return vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($data), 4));
}
exit;
?>

header.php：

<?php
include('db_connect.php');
include('righthandler.php')
?>


<!DOCTYPE html>
  <html lang="de">
  <head>
    <title>DHBW Kino Website</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link href="css/style.css" rel="stylesheet">

    <!-- Insert Favicon to make it show in Tab -->
    <link rel="shortcut icon" type="image/x-icon" href="../img/favicon.ico">

    <!-- Latest compiled and minified CSS -->
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-giJF6kkoqNQ00vy+HMDP7azOuL0xtbfIcaT9wjKHr8RbDVddVHyTfAAsrekwKmP1" crossorigin="anonymous">
    
    <!-- jQuery library -->
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>

    <!-- Popper JS -->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
    
    <!-- Latest compiled JavaScript -->
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script> 

    <!-- Schriftart -->
    <script src="https://use.fontawesome.com/releases/v5.0.8/js/all.js"></script>

    <!-- Bootstrap Table Pack -->
    <link rel="stylesheet" href="https://unpkg.com/bootstrap-table@1.18.2/dist/bootstrap-table.min.css">
    <script src="https://unpkg.com/bootstrap-table@1.18.2/dist/bootstrap-table.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-table/1.18.2/locale/bootstrap-table-de-DE.min.js"></script>
    
  </head>

  <!-- Titel/ Header der Website-->
  <div class="jumbotron container text-center" style="margin-bottom:0">
      <img class="logo" src="../img/logo.png"  width="60%">
  </div>
    
  <!-- Navigationsleiste -->
  <nav class="navbar navbar-expand-sm bg-dark navbar-dark" >
    <div class="container col-md-12">
      <a class="navbar-brand text-warning" href="../index.php">DHBW Kino</a>
      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#collapsibleNavbar">
        <span class="navbar-toggler-icon"></span>
      </button>
      <div class="collapse navbar-collapse" id="collapsibleNavbar">
        <ul class="navbar-nav me-auto">
          <li class="nav-item">
            <a class="nav-link" href="../index.php" style="color: #D3D3D3">Startseite</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="../anfahrt.php" style="color: #D3D3D3">Anfahrt</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="../info.php" style="color: #D3D3D3">Über uns</a>
          </li>
          <?php if($loggedIn) { ?> <li class="nav-item"> <a class="nav-link" href="../tickets.php" style="color: #D3D3D3">Tickets</a> </li> <?php } ?>
          <?php if(hasRight('CONTROL_PANEL')) { ?> <li class="nav-item"> <a class="nav-link" href="../controlpanel.php" style="color: #D3D3D3">Verwaltung</a> </li> <?php } ?>
        </ul>
      </div>
      <div class="collapse navbar-collapse" id="collapsibleNavbar">
        <ul class="navbar-nav ms-auto">
          <?php if($loggedIn) { ?> <li class="nav-item"> <a class="nav-link" href="../profile.php" style="color: #D3D3D3">Profil</a> </li> <?php } ?>
          <li class="nav-item">
            <?php
            if($loggedIn) {
              ?>
                <a class="nav-link" href="../logout.php" style="color: #D3D3D3">Log Out</a>
              <?php
            } else {
              ?>
                <a class="nav-link" href="../login.php" style="color: #D3D3D3">Log In</a>
              <?php
            }
            ?>
          </li>    
        </ul>
      </div>  
    </div>
  </nav>

AJAX成功响应：(my index.php)

<!DOCTYPE html>
  <html lang="de">
  <head>
    <title>DHBW Kino Website</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link href="css/style.css" rel="stylesheet">

    <!-- Insert Favicon to make it show in Tab -->
    <link rel="shortcut icon" type="image/x-icon" href="../img/favicon.ico">

    <!-- Latest compiled and minified CSS -->
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-giJF6kkoqNQ00vy+HMDP7azOuL0xtbfIcaT9wjKHr8RbDVddVHyTfAAsrekwKmP1" crossorigin="anonymous">
    
    <!-- jQuery library -->
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>

    <!-- Popper JS -->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
    
    <!-- Latest compiled JavaScript -->
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script> 

    <!-- Schriftart -->
    <script src="https://use.fontawesome.com/releases/v5.0.8/js/all.js"></script>

    <!-- Bootstrap Table Pack -->
    <link rel="stylesheet" href="https://unpkg.com/bootstrap-table@1.18.2/dist/bootstrap-table.min.css">
    <script src="https://unpkg.com/bootstrap-table@1.18.2/dist/bootstrap-table.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-table/1.18.2/locale/bootstrap-table-de-DE.min.js"></script>
    
  </head>

  <!-- Titel/ Header der Website-->
  <div class="jumbotron container text-center" style="margin-bottom:0">
      <img class="logo" src="../img/logo.png"  width="60%">
  </div>
    
  <!-- Navigationsleiste -->
  <nav class="navbar navbar-expand-sm bg-dark navbar-dark" >
    <div class="container col-md-12">
      <a class="navbar-brand text-warning" href="../index.php">DHBW Kino</a>
      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#collapsibleNavbar">
        <span class="navbar-toggler-icon"></span>
      </button>
      <div class="collapse navbar-collapse" id="collapsibleNavbar">
        <ul class="navbar-nav me-auto">
          <li class="nav-item">
            <a class="nav-link" href="../index.php" style="color: #D3D3D3">Startseite</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="../anfahrt.php" style="color: #D3D3D3">Anfahrt</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="../info.php" style="color: #D3D3D3">Über uns</a>
          </li>
           <li class="nav-item"> <a class="nav-link" href="../tickets.php" style="color: #D3D3D3">Tickets</a> </li>            <li class="nav-item"> <a class="nav-link" href="../controlpanel.php" style="color: #D3D3D3">Verwaltung</a> </li>         </ul>
      </div>
      <div class="collapse navbar-collapse" id="collapsibleNavbar">
        <ul class="navbar-nav ms-auto">
           <li class="nav-item"> <a class="nav-link" href="../profile.php" style="color: #D3D3D3">Profil</a> </li>           <li class="nav-item">
                            <a class="nav-link" href="../logout.php" style="color: #D3D3D3">Log Out</a>
                        </li>    
        </ul>
      </div>  
    </div>
  </nav>
1

javascript

php

ajax

回答 1

Stack Overflow用户

回答已采纳

发布于 2021-03-04 09:22:25

header.php文件中包含index.php的主体。因为在generateTicket.php文件中包含了header.php，所以可以在ajax请求中获得index.php的主体。您可以想象，include表达式或多或少只是将其自身替换为所包含文件的内容。

您必须将header.php中的HTML代码移动到其他文件中，或者不要将header.php文件包含在generateTicket.php中。

但是，如果这两个选项都不适合您，则有一种解决方法。您可以缓冲来自header.php的输出，然后直接删除它。

ob_start();
include('includes/header.php');
ob_end_clean();

票数 0

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/66467026

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