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用戶檢查區域類型並選擇更改類型;這個腳本會將數據庫中的變更描述細節加載到html中的textarea字段中。將複選框選項附加到從數據庫加載的textarea php
那我接下來要happend是什麼：
的描述文本獲取與不同區域的變化將採取HTML描述文本區域內進行追加。我不希望區域被添加到我的數據庫中的描述數據中。問題是不同區域的附加說明字段不起作用..
我正在使用javascript追加文本。有人能告訴我爲什麼我需要更正我的代碼嗎？
<html>
<head>
<script language="JavaScript" type="text/javascript">
// who says we found anything? Maybe this id does not even exist.
function getData(combobox){
var value = combobox.options[combobox.selectedIndex].value
// TODO: check whether the textarea content has been modified.
// if so, warn the user that continuing will lose those changes and
// reload a new page, and abort function if so instructed.
document.location.href = '?change_type='+value;
data_center = [],
data_centers = "";
inputs = document.getElementsByTagName('input');
for (var x = 0, len = inputs.length; x < len; x++) {
{
if (inputs[x].type == "checkbox" && inputs[x].name == 'data_center[]') {
if (inputs[x].checked === true) {
data_center.push(inputs[x].value);
}
}
}
data_centers = (data_center.length > 0 ? ': ' + data_center.join(', ') : '') + '.';
document.getElementById('description').value += data_centers;
document.getElementById('impact').value += data_centers;
}
}
</script>
</head>
<?php
require_once("db_handler.php");
// $_REQUEST is both _GET and _POST
if (isset($_REQUEST['change_type'])) {
$change_type = mysql_real_escape_string($_REQUEST['change_type']);
} else {
$change_type = False;
}
$query = "SELECT `changeID` , `changeName` FROM `change`;";
$exec = mysql_query($query); // You need to be already connected to a DB
if (!$exec) {
trigger_error("Cannot fetch data from change table: " . mysql_error(), E_USER_ERROR);
}
if (0 == mysql_num_rows($exec)) {
trigger_error("There are no changes in the 'change' table. Cannot continue: it would not work. Insert some changeids and retry.", E_USER_ERROR);
}
$options = '';
while($row = mysql_fetch_array($exec))
{
// if the current pageid matches the one requested, we set SELECTED
if ($row['changeID'] === $change_type)
// who says we found anything? Maybe this id does not even exist.
$sel = 'selected="selected"';
else
{
// If there is no selection, we use the first combo value as default
if (False === $change_type)
$change_type = $row['changeID'];
$sel = '';
}
$options .= "<option value=\"{$row['changeID']}\" $sel>{$row['changeName']}</option>";
}
mysql_free_result($exec);
if (isset($_POST['description']))
{
$change_data = mysql_real_escape_string($_POST['description']);
$query = "INSERT INTO change (changeID, description) VALUE '{$change_type}', '{$change_data}') ON DUPLICATE KEY UPDATE description=VALUES(description);";
if (!mysql_query($query))
trigger_error("An error occurred: " . mysql_error(), E_USER_ERROR);
}
$query = "SELECT `changeID` , `changeName` FROM `change`;";
$exec = mysql_query($query); // You need to be already connected to a DB
// abbreviated unchanged code.
$query = "SELECT `description`, `impact` FROM `change` WHERE `changeID`='{$change_type}';";
$exec = mysql_query($query);
if (mysql_num_rows($exec) > 0)
{
// if it does, we're inside a textarea and we directly output the text
$row = mysql_fetch_array($exec);
$textareaDescription = $row['description'];
$textareaImpact = $row['impact'];
} else {
$textareaDescription = '';
$textareaImpact = '';
}
mysql_free_result($exec);
?>
<body bgcolor="white">
<form name="changeform" method="post" action="email_form.php">
<table>
<tr valign="top">
<td><b>Data Center</b></td>
<td><input name="data_center[]" type="checkbox" value="[Zone10]"/>[Zone10]
<input name="data_center[]" type="checkbox" value="[Zone11]"/>[Zone11]
</td>
</tr>
<tr valign="top">
<td><b>Change Type</b></td>
<td><select id="change_type" name="change_type" onChange="getData(this)""><?php print $options; ?></select></td>
</tr>
<tr valign="top">
<td><b>Description</b></td>
<td><textarea name="description" id="description" cols="50" rows="10"><?php print $textareaDescription; ?></textarea></td>
</tr>
<tr valign="top">
<td><b>Service Impact</b></td>
<td><textarea name="impact" id="impact" cols="50" rows="10"><?php print $textareaImpact; ?></textarea></td>
</tr>
<tr valign="top">
<td align="center" colspan="2"><input type="submit" value="submit change" /></td>
</tr>
</table>
</form>
</body>
</html>