How to verify if a folder exists in google shared drives

Question

I wrote the following function to check if a folder exists in Google Drive. It works normally but if the folder is in shared drives it doesn't work. How can I do?

    public function ExistsFolderOnDrive($access_token, $folder_name, $parent_folder_id) {

        $query = "mimeType='application/vnd.google-apps.folder' and trashed=false and name='$folder_name' and '$parent_folder_id' in parents";

        $apiURL = self::DRIVE_FILES_URI . "?q=" . urlencode($query);

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $apiURL);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_HTTPHEADER, array('Authorization: Bearer ' . $access_token));

        $data = json_decode(curl_exec($ch), true);
        $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);

        if ($http_code != 200) {
            $error_msg = 'Failed to retrieve folder from Google Drive';
            if (curl_errno($ch)) {
                $error_msg = curl_error($ch);
            }
            throw new Exception('Error ' . $http_code . ': ' . $error_msg);
        }

        if (empty($data['files'])) {
            // The folder doesn't exist 
            return false;
        } else {
            // Folder exists, return folder information
            return $data['files'][0]['id'];
        }
    } 

I tried adding

'sharedWithMe' in parents 

or even

and ('$parent_folder_id' in parents or 'sharedWithMe' in parents)

to the query but it doesn't work. I'm looking for some suggestions on how to do it

Answer 1

About your following question,

It works normally but if the folder is in shared drives it doesn't work. How can I do?

In the case of your showing script, in order to search the shared drive, how about modifying it as follows?

From:

$apiURL = self::DRIVE_FILES_URI . "?q=" . urlencode($query);

To:

$apiURL = self::DRIVE_FILES_URI . "?q=" . urlencode($query) . "&corpora=allDrives&includeItemsFromAllDrives=true&supportsAllDrives=true";

References:

• Method: files.list