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php - 表单提交不起作用

转载 作者:行者123 更新时间:2023-12-02 20:00:07 26 4
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我有一个表格,可以打印出所有可用的相机。它使用表单来更改这些设置。问题在于该表单仅更新条目中的最后一个摄像机。换句话说,如果我更改表单并为列表中的最后一个摄像机点击“应用”,它将起作用。如果我更改此列表中任何其他摄像机的表单,它会将其更改为与列表中最后一个摄像机具有相同的设置。据我所知,任何值(value)观都没有问题。

很抱歉这里的转储很长,但由于无法缩小问题范围,我认为我应该包括大部分内容:

// Dont allow direct linking
defined('_JEXEC') or die('Direct Access to this location is not allowed.');
//get current user
$user =& JFactory::getUser();
// get a reference to the database
$db = &JFactory::getDBO();

$query_camera_name = "SELECT camera_id, camera_name, camera_status, camera_quality, camera_hash, camera_type FROM #__cameras WHERE user_id=".$user->id." AND camera_status!='DELETED'";
$db->setQuery($query_camera_name);
//get number of cameras so we can build the table accordingly
$db->query();
$num_rows = $db->getNumRows();
// We can use array names with loadAssocList.
$result_cameras = $db->loadAssocList();


if (isset($_POST['apply_changes'])) {

//process changes to camera options
$camera_id = $_POST['camera_id'];
$camera_status = check_input($_POST['camera_status']);
$camera_name = check_input($_POST['camera_name'], "You entered an empty camera name. Enter another name and apply changes.");
$camera_quality = check_input($_POST['camera_quality']);

$query_insert_camera = 'UPDATE `#__cameras` SET `camera_status` ="'.$camera_status.'", `camera_name` ="'.$camera_name.'", `camera_quality` ="'.$camera_quality.'" WHERE `camera_id`='.$camera_id;
$db->setQuery($query_insert_camera);
$db->query();
header("location: " . $_SERVER['REQUEST_URI']);
}

echo "<html>";
echo "<head>";


<link href="dashboard/webcam_widget.css" rel="stylesheet" type="text/css" />
<script type="text/javascript">
function oncameraSubmit(camera_id)
{
document.active_cameras.camera_id.value = camera_id;
return confirm('Apply changes?');
}


</script>
<?php


echo "</head>";
echo "<body>";


if (!isset($result_cameras))
{
//TODO
}
else
{

if ($num_rows == 0)
{
echo '<b><i><center>You currently have no cameras setup. Add a Camera below.</center></i></b>';
}
else
{
?>
<form name="active_cameras" action="<?php htmlentities($_SERVER['REQUEST_URI']); ?>" method="POST">
<input type="hidden" name="camera_id" value="" />
<table id="webcam-table">
<thead>
<tr>
<th>Camera Type</th>
<th>Name</th>
<th>Quality</th>
<th>Status</th>
<th>Camera Actions</th>
</tr>
</thead>
<tbody>
<?php
for($i=0;$i<$num_rows;$i++)
{

//camera_status
if ($result_cameras[$i]["camera_status"] == "ENABLED")
{
$enabled_option = "value='ENABLED' selected='selected'";
$disabled_option = "value='DISABLED'";
}
else
{
$enabled_option = "value='ENABLED'";
$disabled_option = "value='DISABLED' selected='selected'";
}

//camera_quality
if ($result_cameras[$i]["camera_quality"] == "HIGH")
{
$high_option = "value='HIGH' selected='selected'";
$medium_option = "value='MEDIUM'";
$mobile_option = "value='MOBILE'";
}
else if ($result_cameras[$i]["camera_quality"] == "MEDIUM")
{
$high_option = "value='HIGH'";
$medium_option = "value='MEDIUM' selected='selected'";
$mobile_option = "value='MOBILE'";
}
else if ($result_cameras[$i]["camera_quality"] == "MOBILE")
{
$high_option = "value='HIGH'";
$medium_option = "value='MEDIUM'";
$mobile_option = "value='MOBILE' selected='selected'";
}
else
{
//TODO proper logging
}

//camera_type
if ($result_cameras[$i]["camera_type"] == "WEBCAM")
{
$webcam = "value='WEBCAM' selected='selected'";
$axis = "value='AXIS'";
$other = "value='IPCAM'";
}
else if ($result_cameras[$i]["camera_type"] == "AXIS")
{
$webcam = "value='WEBCAM'";
$axis = "value='AXIS' selected='selected'";
$other = "value='IPCAM'";
}
else if ($result_cameras[$i]["camera_type"] == "IPCAM")
{
$webcam = "value='WEBCAM'";
$axis = "value='AXIS'";
$other = "value='IPCAM' selected='selected'";
}
else
{
//TODO
}

?>

<tr>
<td>
<select name="camera_type">
<option <?php echo $webcam; ?>>Webcam</option>
<option <?php echo $axis; ?>>AXIS</option>
<option <?php echo $other; ?>>Other</option>
</select>
</td>
<td>
<input type="text" size="32" maxlength="64" name="camera_name" value="<?php echo $result_cameras[$i]["camera_name"]; ?>" />
</td>
<td>
<select name="camera_quality">
<option <?php echo $high_option; ?>>High</option>
<option <?php echo $medium_option; ?>>Medium</option>
<option <?php echo $mobile_option; ?>>Mobile</option>
</select>
</td>
<td>
<select name="camera_status">
<option <?php echo $enabled_option; ?>>Enabled</option>
<option <?php echo $disabled_option; ?>>Disabled</option>
</select>
</td>
<td>
<input type="submit" name="apply_changes" value="Apply" onClick="javascript:return oncameraSubmit(<?php echo $result_cameras[$i]["camera_id"]; ?>);"/>
</td>
</tr>

<?php
}
echo "</tbody>";
echo "</table>";
echo "</form>";
}
}

最佳答案

看起来您有多个同名的 HTML 元素。因此,您希望在发布表单时获取一组值。

因此,Get $_POST from multiple checkboxes看起来可能会有帮助。

或者,扩展 oncameraSubmit,以便将所有数据存储在隐藏的输入字段中(而不仅仅是 id)。然后当您更新数据库时,使用这些隐藏字段。

关于php - 表单提交不起作用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/8109074/

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