Hi,
I'm new to ajax and jquery but I'm not new to PHP. The following
example seems to work okay to a point but I can't figure out how to
handle data validation errors generated in my PHP.
In my example I want to post some data to a script called ajax.php.
That script will check the data for validity and then return true or
false depending on the outcome of the checks. It will also set an
appropriate error message.
How can I handle the returned data and display an error message if
needed in ajax?
----------------------
HTML / Ajax - test.php
----------------------
<?php
require_once("includes.php");
?>
<html>
<head>
<script src="js/jquery.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function(){
$("form#submit").submit(function() {
var email = $('#email').attr('value');
$.ajax({
type: "POST",
url: "ajax.php",
data: "email="+ email,
success: function(del){
$('form#submit').hide();
$('div.success').fadeIn('medium');
// what if the data failed validation in PHP?
// we need to show 'div.error".
}
});
return false;
});
});
</script>
</head>
<body>
<form id="submit" method="post">
Email:
<input id="email" class="text" name="email" size="20"
type="text" />
<input type="submit" value="send mail" />
</form>
<div class="success" style="display:none;">
Email sent.
</div>
<div class="error">
<?php echo $userError; ?>
</div>
</body>
</html
----------------------
PHP - ajax.php
----------------------
<?php
require_once("includes.php");
$message = $_POST['email'];
if($message != '') {
mail('some-em...@email.com', 'Ajax test', $message);
return 1;
} else {
$userError = "Please enter your email address";
return 0;
}
?>
I've been searching the web for an answer but can't find one
anywhere! Any help would be greatly appreciated.
