Misago/misago/users/signals.py

from django.dispatch import Signal, receiver


delete_user_content = Signal()
username_changed = Signal()


"""
Signal handlers
"""
@receiver(username_changed)
def handle_name_change(sender, **kwargs):
    sender.user_renames.update(
        changed_by_username=sender.username
    )
    sender.warnings_given.update(
        giver_username=sender.username,
        giver_slug=sender.slug
    )
    sender.warnings_canceled.update(
        canceler_username=sender.username,
        canceler_slug=sender.slug
    )