IT HELPS
This problem is mostly on VM's side. Joomla 1.5 has new way of resolving Itemid and option values. It uses JURI class to parse query string. VM passes 'index.php' instead of 'index.php?option=com_virtuemart&Itemid=<some id>' to JURI parser. So joomla just can't resolve correct option and Itemid values and uses default ('frontpage' with Itemid=1).
How to fix it? There are two ways. The first one is fixing all 'incorrect' VM's forms by changing tiny 'action="index.php"' to correct URIs with option and Itemid arguments. This solution is already provided by johk.
The second way to alter joomla code a little bit to support Itemid and option values from $_REQUEST. So here is my solution.
1. Find file named 'libraries/joomla/application/application.php'
2. Find these 2 lines (they are located somewhere around line #191):
Code:
// get the full request URI
$uri = clone(JURI::getInstance());
3. Just after these lines add this code:
Code:
// VM uri fix
if (!$uri->getVar('Itemid') && isset($_REQUEST['Itemid']) || !$uri->getVar('option') && isset($_REQUEST['option'])) {
if (!$uri->getVar('Itemid') && isset($_REQUEST['Itemid'])) {
$uri->_query = ($uri->_query ? '&' : '').'Itemid='.(int)$_REQUEST['Itemid'];
}
if (!$uri->getVar('option') && isset($_REQUEST['option'])) {
$uri->_query = ($uri->_query ? '&' : '').'option='.$_REQUEST['option'];
}
parse_str($uri->_query, $uri->_vars);
}
// end VM uri fix
The final result must be:
Code:
// get the full request URI
$uri = clone(JURI::getInstance());
// VM uri fix
if (!$uri->getVar('Itemid') && isset($_REQUEST['Itemid']) || !$uri->getVar('option') && isset($_REQUEST['option'])) {
if (!$uri->getVar('Itemid') && isset($_REQUEST['Itemid'])) {
$uri->_query = ($uri->_query ? '&' : '').'Itemid='.(int)$_REQUEST['Itemid'];
}
if (!$uri->getVar('option') && isset($_REQUEST['option'])) {
$uri->_query = ($uri->_query ? '&' : '').'option='.$_REQUEST['option'];
}
parse_str($uri->_query, $uri->_vars);
}
// end VM uri fix
That's all. I haven't tested it alot but seems it is working for me.