Erfassen und Strukturieren von Ausnahmen in Benutzerdefinierten Signal-Handlern

from django.dispatch import Signal
from django.core.exceptions import ValidationError
import logging
 
logger = logging.getLogger(__name__)
user_action_signal = Signal()
 
def safe_signal_dispatch(signal, sender, **kwargs):
    results = signal.send_robust(sender=sender, **kwargs)
    errors = []
    for receiver, response in results:
        if isinstance(response, Exception):
            logger.error(f'Error in {receiver}: {response}')
            errors.append((receiver, response))
    if errors:
        raise ValidationError(f'Signal dispatch completed with {len(errors)} errors.')
    return results