I get an error when searching with the q parameter:
php code:
$parameters['q'] = "title = 'hello'";
$children = $service->children->listChildren('root',$parameters);
returns:
Fatal Error: Uncaught exception 'Google_ServiceException' with message 'Error calling GET https://www.googleapis.com/drive/v2/files/root/children?q=title%20%3D%20%27hello%27: (500) Internal Error'
I think it's something to do with the quotes as it works if I search for 'trashed = false'
I'm using the latest api client checked out from: http://code.google.com/p/google-api-php-client/source/checkout
Tried it again after all this time and it's now working.
You get the same error message when you didn't ask for the right permissions. Use the scope https://www.googleapis.com/auth/drive, not (only) https://www.googleapis.com/auth/drive.file