我只是在我的Joomla TPJOBS组件中添加了一个新功能，虽然它不是一个好的/完整/活动的组件，但只是我添加了一个用户名可用性检查器，但它不起作用，因为它可能是由于在这个组件中。
我的Joomla组件目录：\ public_html \ components \ com_tpjobs \
编辑 tpjobs.html.php（退出）和username_validate.php（已创建）
我的Javascript AJAX代码：在tpjobs.html.php下
// JavaScript
<script type="text/javascript">
<!--
//function to create ajax object
function pullAjax(){
var a;
try{
a = new XMLHttpRequest()
}
catch(b)
{
try
{
a = new ActiveXObject("Msxml2.XMLHTTP")
}
catch(b)
{
try
{
a = new ActiveXObject("Microsoft.XMLHTTP")
}
catch(b)
{
alert("Your browser broke!"); return false
}
}
}
return a;
}
function <?php
defined('_JEXEC') or die('Restricted access');
$user = strip_tags(trim($_REQUEST['username']));
if(strlen($user) <= 0)
{
echo json_encode(array('code' => -1,
'result' => 'Invalid username, please try again.'
));
die;
}
$query = "Select a.username FROM #__users where username = '$user' ";
$db =& JFactory::getDBO();
$result = $db->setQuery($query);
$available = mysql_num_rows($result);
if($available)
{
echo json_encode(array('code' => 1,
'result' => "Success,username $user is still available"
));
die;
}
else
{
echo json_encode(array('code' => 0,
'result' => "Sorry but username $user is already taken."
));
die;
}
die;
?>()
{
site_root = '';
var x = document.getElementById('username');
var msg = document.getElementById('msg');
user = x.value;
code = '';
message = '';
obj = pullAjax();
obj.onreadystatechange = function(){
if(obj.readyState == 4)
{
eval("result = " + obj.responseText);
code = result['code'];
message = result['result'];
if(code <=0)
{
x.style.border = "1px solid #FF0084";
msg.style.color = "#FF1A00";
}
else
{
x.style.border = "1px solid #008C00";
msg.style.color = "#73880A";
}
msg.innerHTML = message;
}
}
obj.open("GET", site_root + "username_validate.php?username=" + user, true);
obj.send(null);
}
//-->
</script>
<style>
#username{border: 1px solid #000;}
</style>
档案 username_validate.php
<?php
defined('_JEXEC') or die('Restricted access');
$user = strip_tags(trim($_REQUEST['username']));
if(strlen($user) <= 0)
{
echo json_encode(array('code' => -1,
'result' => 'Invalid username, please try again.'
));
die;
}
// Query database to check if the username is available
$query = "Select a.username FROM #__users where username = '$user' ";
$available = true;
if($available)
{
echo json_encode(array('code' => 1,
'result' => "Success,username $user is still available"
));
die;
}
else
{
echo json_encode(array('code' => 0,
'result' => "Sorry but username $user is already taken."
));
die;
}
die;
?>
组件表单：
<form action="index.php" method="post" name="regJobSeekerNew" enctype="multipart/form-data">
<div class="col width-60">
<fieldset class="tpj_fieldset">
<legend><?php echo JText::_('USER INFORMATION'); ?></legend>
<table class="admintable">
<tr>
<td class="key"><label for="first_name"> <?php echo JText::_('FIRST NAME'); ?>: </label></td>
<td><input type="text" size="50" maxlength="100" name="first_name" id="first_name" class="inputbox"></td>
</tr>
<tr>
<td class="key"><label for="last_name"> <?php echo JText::_('LAST NAME'); ?>: </label></td>
<td><input type="text" size="50" maxlength="100" name="last_name" id="last_name" class="inputbox"></td>
</tr>
<tr>
<td class="key"><label for="name"> <?php echo JText::_('USERNAME'); ?>: </label></td>
<td><input type="text" size="50" maxlength="100" name="username" id="username" class="inputbox"><input type="button" onclick="username_validate();" value="Check Availability"/><br /><div id="msg"></div></td>
</tr>
<tr>
<td class="key"><label for="name"> <?php echo JText::_('EMAIL'); ?>: </label></td>
<td><input type="text" size="50" maxlength="100" name="email" id="email" class="inputbox"></td>
</tr>
<tr>
<td class="key"><label for="name"> <?php echo JText::_('PASSWORD'); ?>: </label></td>
<td><input type="password" size="50" maxlength="100" name="password" id="password" class="inputbox"></td>
</tr>
<tr>
<td class="key"><label for="name"> <?php echo JText::_('VERIFY PASSWORD'); ?>: </label></td>
<td><input type="password" size="50" maxlength="100" name="password2" id="password2" class="inputbox"></td>
</tr>
</table>
</fieldset>
</div>
<div class="col width-60">
<fieldset class="tpj_fieldset">
<legend><?php echo JText::_('EXPERIENCE / EDUCATION'); ?></legend>
<table class="admintable">
<tr>
<td class="key"><label for="name"> <?php echo JText::_('CURRENT POSITION'); ?>: </label></td>
<td><input class="inputbox" type="text" name="current_position" id="current_position" size="60" maxlength="100" value="" /></td>
</tr>
<tr>
<td class="key"><label for="name"> <?php echo JText::_('MAJOR'); ?>: </label></td>
<td><?php
$list_major = getSelectMajor('id_major', '', '');
echo $list_major;
?></td>
</tr>
<tr>
<td class="key"><label for="name"> <?php echo JText::_('DEGREE LEVEL'); ?>: </label></td>
<td><?php
$list_degree_level = getSelectDegreeLevel('id_degree_level', '', ''); echo $list_degree_level;
?></td>
</tr>
</table>
</fieldset>
</div>
<div class="col width-60">
<fieldset class="tpj_fieldset">
<legend><?php echo JText::_('DESIRED EMPLOYMENT'); ?></legend>
<table class="admintable">
<tr>
<td class="key"><label for="name"> <?php echo JText::_('PRIMARY INDUSTRY'); ?>: </label></td>
<td><?php
$list_primary_industry = getSelectIndustry('id_industry1', '', '');
echo $list_primary_industry;
?></td>
</tr>
<tr>
<td class="key"><label for="name"> <?php echo JText::_('SECONDARY INDUSTRY'); ?>: </label></td>
<td><?php
$list_secondary_industry = getSelectIndustry('id_industry2', '', '');
echo $list_secondary_industry;
?></td>
</tr>
<tr>
<td class="key"><label for="name"> <?php echo JText::_('POSITION TYPE'); ?>: </label></td>
<td><?php
$list_position_type = getSelectPositionType('id_pos_type', '', '');
echo $list_position_type;
?></td>
</tr>
<tr>
<td class="key"><label for="name"> <?php echo JText::_('MINIMUM SALARY'); ?>: </label></td>
<td nowrap="nowrap"><input class="inputbox" type="text" name="min_salary" id="min_salary" size="40" maxlength="100" value="" />
<?php
$list_salary_type = getSelectTypeSalary('id_type_salary', '', '');
echo $list_salary_type;
?></td>
</tr>
<tr>
<td class="key"><label for="name"> <?php echo JText::_('IN CURRENCY'); ?>: </label></td>
<td nowrap="nowrap"><input class="inputbox" type="text" name="currency_salary" id="currency_salary" size="10" maxlength="100" value="" /></td>
</tr>
<tr>
<td class="key"><label for="name"> <?php echo JText::_('UPLOAD A PHOTO'); ?>: </label></td>
<td nowrap="nowrap"><input type="file" name="photo" class="inputbox" /></td>
</tr>
</table>
</fieldset>
</div>
<?php
$rowid = (!empty($row->user_id)) ? $row->user_id : null;
HTML_front_tpjobs::showCustom($custom, $rowid);
?>
<?php
$config = & JComponentHelper::getParams('com_tpjobs');
$termid = $config->get('termarticleid');
$link = JRoute::_("index.php?option=com_content&view=article&id=".$termid);
?>
<p>
<?php
global $mainframe;
$mainframe->triggerEvent('onShowOSOLCaptcha', array(false));
?>
</p>
<p><?php echo JText::sprintf('BY CLICKING YOU ARE AGREE', $link); ?></a></p>
<input type="button" value="<?php echo JText::_( 'I ACCEPT CREATE MY ACCOUNT' ); ?>" class="button" onClick="validateregJobSeekerNew()" />
<input type="hidden" name="option" value="<?php echo $option; ?>" />
<input type="hidden" name="task" value="savejobseekernew" />
<input type="hidden" name="id" value="" />
<input type="hidden" name="boxchecked" value="0" />
<?php echo JHTML::_('form.token'); ?>
</form>
<?php
}
答案 0 :(得分：2)
<?php
defined('_JEXEC') or die('Restricted access');
$user = strip_tags(trim($_REQUEST['username']));
if(strlen($user) <= 0)
{
echo json_encode(array('code' => -1,
'result' => 'Invalid username, please try again.'
));
die;
}
// Query database to check if the username is available
$query = "Select a.username FROM #__users where username = '$user' ";
// Execute the above query using your own script and if it return you the
// result (row) we should return negative, else a success message.
$db =& JFactory::getDBO();
$result = $db->setQuery($query);
$available = mysql_num_rows($result);
if($available)
{
echo json_encode(array('code' => 1,
'result' => "Success,username $user is still available"
));
die;
}
else
{
echo json_encode(array('code' => 0,
'result' => "Sorry but username $user is already taken."
));
die;
}
die;
?>