php – 删除行后进入同一数据页面

发布时间：2020-12-13 15:58:54 所属栏目：PHP教程来源：网络整理

导读：我有一个表格,显示特定日期的行数.我想删除一行后,回到同一页面并显示相同日期的相同行.示例：如果我在06/06/2015的日期有2行,并且我删除了其中一行,我想返回到同一页面并查看另一行.我有这些代码： Delete.php： ?php require_once ('../include/global.php

我有一个表格,显示特定日期的行数.我想删除一行后,回到同一页面并显示相同日期的相同行.示例：如果我在06/06/2015的日期有2行,并且我删除了其中一行,我想返回到同一页面并查看另一行.我有这些代码：

Delete.php：

<?php 
require_once ('../include/global.php');
$id=$_REQUEST['id'];
$sql = "DELETE FROM appoint WHERE id=".$id;
$result=mysqli_query($con,$sql) or die('Unable to execute query. '. mysqli_error($con));
if($result){
    $sql2 = "SELECT date FROM appoint WHERE id=".$id;
    $result2=mysqli_query($con,$sql2) or die('Unable to execute query. '. mysqli_error($con)); 
    $rows = mysqli_fetch_array($con,$result2);
    header("location:appoint.php");


}
else { 
header("location:../update/update_false.php");
}
?>

访问getdata.php：

<?php
require_once ('../include/global.php');
    if($_POST['seldate']) {
        $selDate = $_POST['seldate'];
        $sql="SELECT * FROM clinic.appoint WHERE date='$selDate'";
        $result = mysqli_query($con,$sql) or die($sql."<br/><br/>".mysql_error());
        while($rows=mysqli_fetch_array($result)){
    ?>
<tr>
    <td scope="row"><?php echo $rows['time'] ?></td>
    <td scope="row"><?php echo $rows['name'] ?></td>
    <td scope="row"><?php echo $rows['date'] ?></td>
    <td scope="row"><form action='/clinic form/appoint/delete.php'=<?php echo $rows['id']; ?>' method="post">
        <input type="hidden" name="id" value="<?php echo $rows['id']; ?>">
        <input type="submit" name="submit1" value="Done">
    </form>

    </td>
    </tr>
<?php } } ?>

并且数据显示表的页面为appointment.php：

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script language="javascript" type="text/javascript">
$(document).ready(function(){
    $("#Date").change(function(){
            var seldate =$(this).val();
            $("#scheduleDate").html(seldate);
            var dataString = 'seldate='+ seldate;
                $.ajax({
                type: "POST",url: "getdata.php",data: dataString,cache: false,success: function(data) {
                    $("#Schedule").html(data);
                } 
            });
        });
});
</script>
</head>

<body>
<div class="container12">
    <header>
        <div align="center">
            <div class="column12"> <a href="homepage.php"><img src="images/logo.png"/></a> </div>
        </div>
        <div align="center">
            <div align="center"><a href="logout.php">Logout</a></div>
        </div>
    </header>
    <h1 id="home">&nbsp;</h1>
    <div class="alert"></div>
    <div class="column12" align="left"><B><center>Appointments</B></center><br />
    </div> 
    </div>
  </div>
</div>
<div class="container12" align="center">
    <form action="addApp.php" method="post" name="form1" id="form1">
    <table width="700px" class="imagetable" align="center">
    <th align="center">Name</th>
    <th>Date</th>
    <th>Time</th>
    <th>Contact Number</th>
    <th>Action</th>
    <tr>
    <td><input type="text" name="name" class="large-fld-app" placeholder="name"/></td>
    <td><input type="text" name="date" class="large-fld-app" placeholder="DD/MM/YYYY"/></td>
    <td><input type="time" name="time" class="large-fld-app"/></td>
    <td><input type="text" name="phone" class="large-fld-app"/></td>
    <td align="center"><input type="submit" value="" name="submit" class="imgClass_save" />
    </td>
    </tr>
    </table>
    </form>
</div>
<?php
//$sql="SELECT * FROM clinic.appoint";
//$result = mysqli_query($con,$sql) or die($sql."<br/><br/>".mysql_error());
//$rows=mysqli_fetch_array($result)
?>
<div class="container">
<table>
          <thead>
            <tr>
            Schedule
                <th scope="row">
                    <select name="Date" required class="form-control" id="Date">
                    <option value="">Please Select Date</option>
                    <?php $sql2="SELECT * FROM clinic.appoint GROUP BY date";
                    $result2 = mysqli_query($con,$sql2) or die($sql2."<br/><br/>".mysql_error());
                    while($rows2=mysqli_fetch_array($result2)){?>
                        <option value="<?php echo $rows2['date'] ?>"><?php echo $rows2['date'] ?></option>
                    <?php } ?>
                    </select>
                </th>
                <td class="schedule-offset" colspan="2" id="scheduleDate"></td>
            </tr>
          </thead>
          <tbody id="Schedule"></tbody>
</table>
</div>
</body>
</html>

解决方法

只是一个快速的解决方案：将您的ajax部分放入一个函数中.

更改您的PHP代码以进行删除：

require_once ('../include/global.php');
$id = $_REQUEST['id'];

# Find the date for which you are deleting...
$query = "SELECT date FROM appoint WHERE id = " . $id;
$row = mysqli_fetch_assoc(mysqli_query($con,$query));
$request_date = $row['date'];

$sql = "DELETE FROM appoint WHERE id=".$id;
$result = mysqli_query($con,$sql) or die('Unable to execute query. '. mysqli_error($con));
if($result){
    header("Location: appoint.php?date=" . $request_date);
}
else { 
    header("Location: ../update/update_false.php");
}

现在当你从删除回来时,你有一个$_GET [‘date’].但是当你第一次加载页面时,你没有那个.

现在改变你的JS以适应它.将AJAX部分放在一个函数中.

$(document).ready(function(){
    $("#Date").change(function(){
        var seldate =$(this).val();
        display_data(seldate);
    });

    // This is the function...
    function display_data(seldate) {

        $("#scheduleDate").html(seldate);
        var dataString = 'seldate='+ seldate;
            $.ajax({
            type: "POST",success: function(data) {
                $("#Schedule").html(data);
            } 
        });

    }

    // Now here is the real code for retaining your Date...
    <?php
    if (!empty($_GET['date'])) {
        ?>
    display_data('<?php echo $_GET["date"]; ?>')
        <?php
    }
    ?>
    document.getElementById('Date').value = '<?php echo @$_GET["date"]; ?>';

});

现在你只需要在dom准备就绪时在特定日期调用display_data()函数.

您还可以使用会话：

示例：在我的php代码中,$request_date存储在会话中.

首先,如果尚未启动session_start(),请启动会话.在所有页面中,HTML和DELETE PHP和UPDATE FAIL页面.

$request_date = $row['date'];
$_SESSION['date'] = $request_date;

并将重定向部分更改回您的代码.

header("Location: appoint.php");

现在改变我的脚本块的这一部分：

从：

<?php
if (!empty($_GET['date'])) {
    ?>
    display_data('<?php echo $_GET["date"]; ?>');
    <?php
}
?>
document.getElementById('Date').value = '<?php echo @$_GET["date"]; ?>';

至：

<?php
if (!empty($_SESSION['date'])) {
    ?>
    display_data('<?php echo $_SESSION["date"]; ?>');
    <?php
    unset($_SESSION['date']);
}
?>
document.getElementById('Date').value = '<?php echo @$_SESSION["date"]; ?>';

使用会话的优点是,如果删除失败并重定向到“更新失败”页面.之后再次回到列表页面.您将离开该列表的位置.

（编辑：李大同）

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