plateforme-corres2math/apps/participation/signals.py

from participation.models import Participation, Video


def create_team_participation(instance, **_):
    participation = Participation.objects.get_or_create(team=instance)[0]
    if not participation.solution:
        participation.solution = Video.objects.create()
    if not participation.synthesis:
        participation.synthesis = Video.objects.create()
    participation.save()