new_contents: # -*- coding: utf-8 -*-
  # Generated by Django 1.11.17 on 2021-01-12 14:15
  from __future__ import unicode_literals
  
  from django.db import migrations, models
  import django.db.models.deletion
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('time_based', '0049_auto_20210112_1210'),
      ]
  
      operations = [
          migrations.AlterField(
              model_name='slotparticipant',
              name='participant',
              field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='slot_participants', to='time_based.DateParticipant'),
          ),
          migrations.AlterField(
              model_name='timecontribution',
              name='slot_participant',
              field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, related_name='contributions', to='time_based.SlotParticipant'),
          ),
          migrations.AlterUniqueTogether(
              name='slotparticipant',
              unique_together=set([('slot', 'participant')]),
          ),
      ]
  
subject: Add migration