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110 lines
3.7 KiB
Python
110 lines
3.7 KiB
Python
# Generated by Django 4.2.16 on 2024-11-20 17:08
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import django.db.models.deletion
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from django.conf import settings
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from django.db import migrations, models
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from django.db.migrations.state import StateApps
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from django.db.models import Q
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from django.utils.timezone import localdate
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def migrate_meta_groups(apps: StateApps, schema_editor):
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"""Attach the existing meta groups to the clubs.
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Until now, the meta groups were not attached to the clubs,
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nor to the users.
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This creates actual foreign relationships between the clubs
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and theirs groups and the users and theirs groups.
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Warnings:
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When the meta groups associated with the clubs aren't found,
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they are created.
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Thus the migration shouldn't fail, and all the clubs will
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have their groups.
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However, there will probably be some groups that have
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not been found but exist nonetheless,
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so there will be duplicates and dangling groups.
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There must be a manual cleanup after this migration.
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"""
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Group = apps.get_model("core", "Group")
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Club = apps.get_model("club", "Club")
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meta_groups = Group.objects.filter(is_meta=True)
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clubs = list(Club.objects.all())
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for club in clubs:
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club.board_group = meta_groups.get_or_create(
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name=club.unix_name + settings.SITH_BOARD_SUFFIX
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)[0]
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club.members_group = meta_groups.get_or_create(
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name=club.unix_name + settings.SITH_MEMBER_SUFFIX
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)[0]
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club.save()
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club.refresh_from_db()
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memberships = club.members.filter(
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Q(end_date=None) | Q(end_date__gt=localdate())
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).select_related("user")
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club.members_group.users.set([m.user for m in memberships])
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club.board_group.users.set(
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[
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m.user
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for m in memberships.filter(role__gt=settings.SITH_MAXIMUM_FREE_ROLE)
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]
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)
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# steps of the migration :
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# - Create a nullable field for the board group and the member group
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# - Edit those new fields to make them point to currently existing meta groups
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# - When this data migration is done, make the fields non-nullable
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class Migration(migrations.Migration):
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dependencies = [
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("core", "0040_alter_user_options_user_user_permissions_and_more"),
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("club", "0011_auto_20180426_2013"),
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]
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operations = [
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migrations.AddField(
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model_name="club",
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name="board_group",
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field=models.OneToOneField(
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blank=True,
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null=True,
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on_delete=django.db.models.deletion.CASCADE,
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related_name="club_board",
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to="core.group",
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),
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),
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migrations.AddField(
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model_name="club",
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name="members_group",
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field=models.OneToOneField(
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blank=True,
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null=True,
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on_delete=django.db.models.deletion.CASCADE,
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related_name="club",
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to="core.group",
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),
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),
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migrations.RunPython(
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migrate_meta_groups, reverse_code=migrations.RunPython.noop, elidable=True
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),
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migrations.AlterField(
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model_name="club",
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name="board_group",
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field=models.OneToOneField(
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on_delete=django.db.models.deletion.CASCADE,
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related_name="club_board",
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to="core.group",
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),
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),
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migrations.AlterField(
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model_name="club",
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name="members_group",
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field=models.OneToOneField(
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on_delete=django.db.models.deletion.CASCADE,
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related_name="club",
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to="core.group",
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),
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),
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]
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