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Cancels an active approval cycle by its unique identifier, optionally recording a reason for the cancellation.

Purpose

This function provides a high-level interface to cancel an approval cycle in a document management system. It delegates to an underlying controller to perform the cancellation operation and returns a standardized response indicating success or failure. The function is decorated with logging capabilities to track controller actions. It's typically used when an approval process needs to be terminated before completion, such as when a document needs revision or the approval is no longer needed.

Source Code

def cancel_approval_cycle(user: DocUser, approval_uid: str, reason: Optional[str] = None) -> Dict[str, Any]:
    """Cancel an approval cycle."""
    success = _controller.cancel_cycle(
        cycle_uid=approval_uid,
        reason=reason
    )
    return {"success": success, "message": "Approval canceled successfully" if success else "Failed to cancel approval"}

Parameters

Parameter Details

user: A DocUser object representing the authenticated user performing the cancellation. This parameter is used for authorization and audit trail purposes, though it's not directly passed to the underlying controller in this implementation.

approval_uid: A string containing the unique identifier (UID) of the approval cycle to be canceled. This must be a valid approval cycle identifier that exists in the system.

reason: An optional string parameter that allows the user to provide a textual explanation for why the approval cycle is being canceled. This reason may be stored for audit purposes. Defaults to None if not provided.

Return Value

Type: Dict[str, Any]

Returns a dictionary with two keys: 'success' (boolean) indicating whether the cancellation operation succeeded, and 'message' (string) containing a human-readable status message. If success is True, the message will be 'Approval canceled successfully'; if False, it will be 'Failed to cancel approval'.

Dependencies

• typing
• datetime
• logging
• traceback
• uuid
• CDocs

Required Imports

from typing import Dict, Any, Optional
from CDocs.models.user_extensions import DocUser
from CDocs.controllers import log_controller_action

Usage Example

from CDocs.models.user_extensions import DocUser
from your_module import cancel_approval_cycle

# Assume user is already authenticated and retrieved
user = DocUser.get_by_id('user_123')
approval_uid = 'approval_cycle_456'
reason = 'Document requires major revisions'

# Cancel the approval cycle
result = cancel_approval_cycle(
    user=user,
    approval_uid=approval_uid,
    reason=reason
)

if result['success']:
    print(f"Success: {result['message']}")
else:
    print(f"Error: {result['message']}")

Best Practices

• Always provide a meaningful reason when canceling an approval cycle for audit trail purposes
• Ensure the user has appropriate permissions to cancel approval cycles before calling this function
• Check the 'success' key in the returned dictionary before proceeding with subsequent operations
• Handle the case where the approval_uid does not exist or is invalid
• The function relies on a module-level _controller object that must be properly initialized
• This function is decorated with @log_controller_action, so all invocations are automatically logged
• Consider implementing additional validation to verify the user has permission to cancel the specific approval cycle
• The function does not raise exceptions directly but returns success/failure status, so always check the return value

Tags

Similar Components

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• function cancel_approval_cycle_v1 85.4% similar

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