A long time ago I wrote some code to remove users from user groups. Don't know if it is still useful. $groupID would be the nodeID of the assigned node.
$object = eZContentObject::fetch( $userObjectID );
if ($object)
{
$nodeID = $object->attribute('main_node_id');
$version = $object->currentVersion();
$versionNumber = $version->attribute('version');
$newVersion = $object->createNewVersion();
//TODO: make sure this is not the main node.
$newVersion->removeAssignment($groupID);
$newVersionNr = $newVersion->attribute( 'version' );
include_once( 'lib/ezutils/classes/ezoperationhandler.php' );
$operationResult = eZOperationHandler::execute(
'content', 'publish', array(
'object_id' => $userObjectID,
'version' => $newVersionNr
)
); }
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I think the right method to use is eZContentObjectTreeNode::removeNodeFromTree(). if the node you're removing is the only assignment of a content object it also removes the associated content object, otherwise, it just removes the location.
@Sebastiaan : you're code seems a bit complicated, you don't need to create a new version to remove a location
