dynamic urls using text field instead of IDs?

Hello, I would like to create clean urls using dynamic data.
I don't want to create links like this:
www.mysite.com/newsid=1

but I would like to create something like:
www.mysite.com/news=my-news-title

So, I think to add another field to the insert/update form in my admin pages (data assist pages).
The title field would contain the customer entered text (with spaces and accented characters) and the added field would contain a string built converting the text entered in the title field after sanitization (spaces converted to dashes, accented characters converted to simple letters without accents, and so on).
Is there an easy way to do this in dataassist pages?
Thanks in advance.
tony

I think I solved this using a custom solution.
I added this code before the WA insert code:
<?php
// funzione pulizia stringa
function CleanString($string)
{
$strResult = str_ireplace("à", "a", $string);
$strResult = str_ireplace("á", "a", $strResult);
$strResult = str_ireplace("è", "e", $strResult);
$strResult = str_ireplace("é", "e", $strResult);
$strResult = str_ireplace("ì", "i", $strResult);
$strResult = str_ireplace("í", "i", $strResult);
$strResult = str_ireplace("ò", "o", $strResult);
$strResult = str_ireplace("ó", "o", $strResult);
$strResult = str_ireplace("ù", "u", $strResult);
$strResult = str_ireplace("ú", "u", $strResult);
$strResult = str_ireplace("ç", "c", $strResult);
$strResult = str_ireplace("ö", "o", $strResult);
$strResult = str_ireplace("û", "u", $strResult);
$strResult = str_ireplace("ê", "e", $strResult);
$strResult = str_ireplace("ü", "u", $strResult);
$strResult = str_ireplace("ë", "e", $strResult);
$strResult = str_ireplace("ä", "a", $strResult);
$strResult = str_ireplace("'", " ", $strResult);
$strResult = str_ireplace("_", " ", $strResult);
$strResult = preg_replace('/[^A-Za-z0-9 ]/', "", $strResult);
$strResult = trim($strResult);
$strResult = preg_replace('/[ ]{2,}/', " ", $strResult);
$strResult = str_replace(" ", "-", $strResult);
return $strResult;
}



?>

and then changed the "alias" field content in the Insert server behaviour to:
<?php echo ((isset($_POST["title_news"]))?CleanString($_POST["title_news"]):""); ?>

This seems to work.

Please let me know if there is a better way to do this.
Thanks again.
tony

I think that works. There is a function iconv() that would replace all accented characters in one line and catch any other characters you might have missed that might be a little cleaner.

<?php
// funzione pulizia stringa
function CleanString($string)
{
$strResult = iconv('UTF-8', 'ASCII//TRANSLIT', $string);
$strResult = str_ireplace("'", " ", $strResult);
$strResult = str_ireplace("_", " ", $strResult);
$strResult = preg_replace('/[^A-Za-z0-9 ]/', "", $strResult);
$strResult = trim($strResult);
$strResult = preg_replace('/[ ]{2,}/', " ", $strResult);
$strResult = str_replace(" ", "-", $strResult);
return $strResult;
}

?>