in nucleus/base/models.py [0:0]
def send_to_github_m2m(sender, instance, action, reverse, model, pk_set, **kwargs):
log.debug(f"send_to_github_m2m, {model._meta}, {action}, {pk_set}")
if action in M2M_ACTIONS and issubclass(model, SaveToGithubModel):
for obj in model.objects.filter(pk__in=pk_set):
obj.to_github()