from django.db import migrations def create_email_instances(apps, schema_editor): users = apps.get_model("peeringdb_server", "User") emailAddresses = apps.get_model("account", "EmailAddress") all_emails = emailAddresses.objects.all() emails = [] emails_dict = {} for user in users.objects.all(): l_email = user.email.lower() if not all_emails.filter(email=l_email).exists() and l_email not in emails_dict: emails_dict[l_email] = 1 emails.append(emailAddresses(email=l_email, user=user, primary=True)) emailAddresses.objects.bulk_create(emails) class Migration(migrations.Migration): dependencies = [ ("peeringdb_server", "0014_clt_description"), ] operations = [ migrations.RunPython(create_email_instances, migrations.RunPython.noop), ]