I'm trying to create a page where onchange of first select it appears a
second one (which values, readen from a database, depend on previous choise)
and on choise of second select results are show in a div.
Here some images:
Start:
http://img269.imageshack.us/i/senzanomejg.png/
http://img269.imageshack.us/i/senzanomejg.png/
On first select choise:
http://img534.imageshack.us/i/senzanome2.png/
http://img534.imageshack.us/i/senzanome2.png/
On second select choise:
http://img269.imageshack.us/i/senzanome3y.png/
http://img269.imageshack.us/i/senzanome3y.png/
Here's the code:
index.php
html
!DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.0 Transitional//EN
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd;
html xmlns=http://www.w3.org/1999/xhtml;
head
meta http-equiv=Content-Type content=text/html; charset=ISO-8859-1 /
script type=text/javascript src=jquery.js/script
script type=text/javascript
$(document).ready(function() {
$('#sel_continenti').change(function(){
var cont = $('#sel_continenti').attr('value');
$.post(selection.php, {id_cont:cont}, function(data){
$(#sel_nazioni).empty();
//$(div#result).empty();
$(div#nazioni).empty();
$(div#result).append(prova2br /);
//$(div#result).append(document.createTextNode(prova));
$(#sel_nazioni).prepend(data);
$(div#nazioni).prepend(data);
});
});
$('#sel_nazioni').change(function(){
var id_naz = $('#sel_nazioni').attr('value');
$.post(result.php, {id:id_naz}, function(data){
$(div#result).empty();
$(div#result).append(prova3br /);
//$(div#result).prepend(data);
});
});
});
/script
/head
body
div id=continenti
?php
include_once 'option.class.php';
$obj = new Option();
$obj-ShowContinenti();
?
/div
div id=nazioni
!--Seleziona una nazione:br
select id=sel_nazioni name=sel_nazionioption
value=noScegli.../option
/select--
/div
div id=result
prova1br /
/div
/body
/html
File option.class.php
?php
class Option
{
public $conn;
public function __construct()
{
$this-DbConnectAndSelect();
}
protected function DbConnectAndSelect()
{
//include_once db_config.php;
//$this-conn = mysql_connect($db_host,$username,$password);
$this-conn = pg_connect(host= port= user=
password= dbname=);
//mysql_select_db($db_name, $this-conn);
return TRUE;
}
public function ShowContinenti()
{
echo 'Seleziona un continente:br';
echo 'select id=sel_continenti name=sel_continentioption
value=noScegli.../option';
$sql = SELECT * FROM continenti;
//$res = mysql_query($sql,$this-conn);
$res = pg_query($this-conn,$sql);
while($row = pg_fetch_row($res))
{
echo 'option value=' . $row[0] . '' . $row[1] .
'/option';
}
echo '/select';
}
/*public function ShowNazioni()
{
if($_POST['id_cont'] == no)
{
die;
}
//echo 'Seleziona una nazione:br';
//echo 'select id=sel_nazioni name=sel_nazioni';
$id_cont = $_POST['id_cont'];
$sql = SELECT * FROM nazioni WHERE id_cont=$id_cont;
$res = pg_query($this-conn,$sql);
//echo'option value=noScegli.../option';
while($row = pg_fetch_row($res))
{
echo 'option value=' . $row[0] . '' . $row[2] .
'/option';
}
//echo '/select';
}*/
public function ShowNazioni()
{
if($_POST['id_cont'] == no)
{
die;
}
echo 'Seleziona una nazione:br';
echo 'select id=sel_nazioni name=sel_nazioni';
$id_cont = $_POST['id_cont'];
$sql = SELECT * FROM nazioni WHERE id_cont=$id_cont;
$res = pg_query($this-conn,$sql);
echo'option value=noScegli.../option';
while($row = pg_fetch_row($res)) {
echo 'option value=' . $row[0] . '' . $row[2] .
'/option';
}
echo '/select';
}
public function ShowResult()
{
echo dentro shoresult();
if($_POST['id'] == no)
{
echo post id=no;
die;
}
echo 'brbrHai scelto la nazione: ';
$id = $_POST['id'];
$sql = SELECT * FROM nazioni WHERE id=$id;
$res = pg_query($this-conn,$sql);
$row = pg_fetch_row($res);
echo 'id: '.$row[0].' id_cont: '.$row[1].' nazione: '.$row[2];
}
}
?
File selection.php
?php
include_once 'option.class.php';
$obj = new
