Gets a specific parent reference. Try it now or see an example.
Request
HTTP request
GET https://www.googleapis.com/drive/v2/files/fileId/parents/parentId
Parameters
| Parameter name | Value | Description |
|---|---|---|
| Path parameters | ||
fileId |
string |
The ID of the file. |
parentId |
string |
The ID of the parent. |
Authorization
This request requires authorization with at least one of the following scopes:
| Scope |
|---|
https://www.googleapis.com/auth/drive |
https://www.googleapis.com/auth/drive.file |
https://www.googleapis.com/auth/drive.readonly |
https://www.googleapis.com/auth/drive.metadata.readonly |
https://www.googleapis.com/auth/drive.appdata |
https://www.googleapis.com/auth/drive.metadata |
https://www.googleapis.com/auth/drive.photos.readonly |
Some scopes are restricted and require a security assessment for your app to use them. For more information, see the authentication and authorization page.
Request body
Do not supply a request body with this method.
Response
If successful, this method returns a Parents resource in the response body.
Examples
Note: The code examples available for this method do not represent all supported programming languages (see the client libraries page for a list of supported languages).
Java
Uses the Java client library.
import com.google.api.client.http.HttpResponseException;
import com.google.api.services.drive.Drive;
import java.io.IOException;
// ...
public class MyClass {
// ...
/**
* Check if a file is in a specific folder
*
* @param service Drive API service instance.
* @param folderId ID of the folder.
* @param fileId ID of the file.
* @return Whether or not the file is in the folder.
*/
private static boolean isFileInFolder(Drive service, String folderId,
String fileId) throws IOException {
try {
service.parents().get(fileId, folderId).execute();
} catch (HttpResponseException e) {
if (e.getStatusCode() == 404) {
return false;
} else {
System.out.println("An error occurred: " + e);
throw e;
}
} catch (IOException e) {
System.out.println("An error occurred: " + e);
throw e;
}
return true;
}
// ...
}
.NET
Uses the .NET client library.
using Google;
using Google.Apis.Drive.v2;
using Google.Apis.Drive.v2.Data;
using System.Net;
// ...
public class MyClass {
// ...
/// <summary>
/// Check if a file is in a specific folder.
/// </summary>
/// <param name="service">Drive API service instance.</param>
/// <param name="folderId">ID of the folder.</param>
/// <param name="fileId">ID of the file.</param>
/// <returns>Whether or not the file is in the folder</returns>
public static bool IsFileInFolder(DriveService service, String folderId, String fileId) {
try {
service.Parents.Get(fileId, folderId).Execute();
} catch (GoogleApiRequestException e) {
if (e.HttpStatusCode == HttpStatusCode.NotFound) {
return false;
} else {
throw;
}
} catch (Exception e) {
Console.WriteLine("An error occurred: " + e.Message);
throw;
}
return true;
}
// ...
}
PHP
Uses the PHP client library.
/**
* Check if a file is in a specific folder.
*
* @param Google_Service_Drive $service Drive API service instance.
* @param String $folderId ID of the folder.
* @param String $fileId ID of the file.
* @return boolean Whether or not the file is in the folder.
*/
function isFileInFolder($service, $folderId, $fileId) {
try {
$service->parents->get($fileId, $folderId);
} catch (apiServiceException $e) {
if ($e->getCode() == 404) {
return false;
} else {
print "An error occurred: " . $e->getMessage();
throw $e;
}
} catch (Exception $e) {
print "An error occurred: " . $e->getMessage();
throw $e;
}
return true;
}
Python
Uses the Python client library.
from apiclient import errors
# ...
def is_file_in_folder(service, folder_id, file_id):
"""Check if a file is in a specific folder.
Args:
service: Drive API service instance.
folder_id: ID of the folder.
file_id: ID of the file.
Returns:
Whether or not the file is in the folder.
"""
try:
service.parents().get(fileId=file_id, parentId=folder_id).execute()
except errors.HttpError, error:
if error.resp.status == 404:
return False
else:
print 'An error occurred: %s' % error
raise error
return True
JavaScript
Uses the JavaScript client library.
/**
* Check if a file is in a specific folder.
*
* @param {String} folderId ID of the folder.
* @param {String} fileId ID of the file.
* @param {Function} callback Function to call when the request is complete.
*/
function isFileInFolder(folderId, fileId, callback) {
var request = gapi.client.drive.parents.get({
'parentId': folderId,
'fileId': fileId
});
request.execute(function(resp) {
if (resp.error) {
if (resp.error.code = 404) {
callback(false);
} else {
console.log('An error occurred: ' + resp.error.message);
callback(null);
}
} else {
callback(true);
}
});
}
Go
Uses the Go client library.
import (
"google.golang.org/drive/v2"
"fmt"
)
// IsFileChild tests whether the given file is in the given folder
func IsFileChild(d *drive.Service, folderId string,
fileId string) (bool, error) {
_, err := d.Parents.Get(fileId, folderId).Do()
if err != nil {
fmt.Printf("An error occurred: %v\n", err)
return false, err
}
return true, nil
}
Objective-C
Uses the Objective-C client library.
#import "GTLDrive.h"
// ...
+ (void)checkIfFileIsInFolderWithService:(GTLServiceDrive *)service
folderId:(NSString *)folderId
fileId:(NSString *)fileId
completionBlock:(void (^)(BOOL, NSError *))completionBlock {
GTLQueryDrive *query =
[GTLQueryDrive queryForParentsGetWithFileId:fileId parentId:folderId];
// queryTicket can be used to track the status of the request.
GTLServiceTicket *queryTicket =
[service executeQuery:query
completionHandler:^(GTLServiceTicket *ticket,
GTLDriveParentReference *parent, NSError *error) {
if (error == nil) {
completionBlock(YES, nil);
} else {
if ([error code] == 404) {
completionBlock(NO, nil);
} else {
NSLog(@"An error occurred: %@", error);
}
}
}];
}
// ...
Try it!
Use the APIs Explorer below to call this method on live data and see the response.