Assigns ownership of a node to a user.
$node: A node object to modify.
$context: Array with the following elements:
node_assign_owner_action_form()
node_assign_owner_action_validate()
node_assign_owner_action_submit()
function node_assign_owner_action($node, $context) {
$node->uid = $context['owner_uid'];
$owner_name = db_query("SELECT name FROM {users} WHERE uid = :uid", array(
':uid' => $context['owner_uid'],
))
->fetchField();
watchdog('action', 'Changed owner of @type %title to uid %name.', array(
'@type' => node_type_get_name($node),
'%title' => $node->title,
'%name' => $owner_name,
));
}