# checkIsAssignedDocument(_:completion:) ``` func checkIsAssignedDocument(_ documentURL: URL, completion: @escaping @Sendable (Bool, (any Error)?) -> Void) ``` ``` func isAssignedDocument(_ documentURL: URL) async throws -> Bool ``` ## Parameters `documentURL` The file URL of the document to check. `completion` A block called when the check is complete. The block takes two parameters: - isAssignedDocument: A Boolean indicating whether the document is assigned to the current user. - error: An error object if the check failed, or nil if successful. ## Discussion\abstract Determines whether a URL to the document was assigned to the student. \discussion This method checks if the document at the specified URL is assigned to the current student signed into the device. ``` This is particularly useful for implementing student-specific workflows, such as: - Showing submission UI only for assigned documents - Displaying assignment-specific metadata or instructions - Enabling special features or restrictions for assigned work The completion handler's `isAssignedDocument` parameter will be `YES` when: - The document URL corresponds to an active assigned document - The current user is authenticated as a student and assigned to this specific document The completion handler's `isAssignedDocument` parameter will be `NO` when: - The document is not part of any assigned document - The current user is not a student (e.g., teacher) - The document has been unassigned or deleted - The student does not have permission to access this assignment ``` \note This method is designed to be called from ClassKitUI clients and requires proper ClassKit entitlements. The completion handler may be called on a background thread, so dispatch to the main queue if you need to update UI based on the result. [[CLSDataStore shared] checkIsAssignedDocument:documentURL completion:^(BOOL isAssignedDocument, NSError * _Nullable error) { dispatch_async(dispatch_get_main_queue(), ^{ if (error) { NSLog(@“Error checking assignment status: %@”, error); return; } ``` if (isAssignedDocument) { // Show UI with submission options [self showAssignedDocumentSubmissionUI]; } else { // Show standard document UI [self showStandardDocumentUI]; } }); ``` }]; --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)