Free Mod

[inspireme]

Hi, this is a rough guide to adding AJAX field validation.

firstly, a new file, uploaded to the main indexU folder, copy this, and save it as "post_url.php"

<?
include ("application.php");
$url = $_REQUEST["url"];
$query = " SELECT url
FROM idx_link
WHERE url = '$url'
LIMIT 0 , 30 ";
$result = $dbConn->FetchArray($query);
$num = count($result);

if($num > 0){
//uurl already exists
echo "Sorry your site is already Added.";
}else{
echo "Thanks, the URL seems fine!";
}
?>

Load up add form.

at the top add this :

<script type="text/javascript">
var http = false;

if(navigator.appName == "Microsoft Internet Explorer") {
  http = new ActiveXObject("Microsoft.XMLHTTP");
} else {
  http = new XMLHttpRequest();
}

function validate2(url) {
  http.abort();
  http.open("GET", "post_url.php?url=" + url, true);
  http.onreadystatechange=function() {
    if(http.readyState == 4) {
      document.getElementById('message').innerHTML = http.responseText;
    }
  }
  http.send(null);
}
</script>

almost done, just change this on the add_form.html :

<input type="text" size="40" name="url" value="<%$url%>" onBlur="validate2(this.value)" class="textbg">
		  <div id="message"></div>

Try it out!! to make it really cool, instead of the message load a little green tick or red cross image, use this template to validate phone numbers, usernames - allsorts of thigns on the form before its even submitted

Im using it ont he admin panel when i add sites - i can see straight away if its a duplicate.

[echo@]

could you post a print screen? plese

[inspireme]

could you post a print screen? plese

why? really isn't anything to see... ? its jsut a usability improvement - warns people if the site wont be accepted before they fill in the rest. Im using it to check sites im adding myself arent already listed...

[inspireme]

Hmm, well it seems im very bad at explaining myself, people are confused. SO...

try this :

http://www.theleisureguide.co.uk/add.php

go to the "url" bit

type in a url and defocus theurl box (click somewhere else) it should say its okay to add the site.

Now type in :
http://www.activityuk.com/

It should say its a duplicate....

Hope it makes more sense now.

[inspireme]

you can also try the postcode, type anything random in and it will say "thats fine" and then type this : BN9 9DS

And it will tell you its already added.

[secero]

But if you sail in without "/" , then he does not see as twice.

Thus, with a sign less or more, then have no impact.

I have added exactly these, therefore without "/" on end.
He accepts directly http://www.activityuk.com

[secero]

I have activated these on my site.

He gives report: Your site is already in our database.

But to add continues simply. It is therefore nothing else then a report or this way?

[inspireme]

Yes... its to tell people not to add sites again... but as i said int he first post this is a method to do things, you can write whatever php code you want to validate the field. In the example i gave before you could change the sql query to say LIKE $url% and then it would warn about any page within the domain... Im nto saying this is a workign example. just useful code to help peopel with feedback and messages as they fill in the form.