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models: Fix incorrect on_delete=CASCADE values for deleted streams.

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In theory, we never delete streams, but if we did delete the
notifications stream for a realm, we certainly shouldn't delete the
realm.
This commit is contained in:
Tim Abbott
2021-04-29 12:30:25 -07:00
committed by Tim Abbott
parent 37b265495b
commit 18595fac58
2 changed files with 60 additions and 4 deletions
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56
zerver/migrations/0324_fix_deletion_cascade_behavior.py Normal file
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# Generated by Django 3.2 on 2021-05-07 01:00
import django.db.models.deletion
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
("zerver", "0323_show_starred_message_counts"),
]
operations = [
migrations.AlterField(
model_name="realm",
name="notifications_stream",
field=models.ForeignKey(
blank=True,
null=True,
on_delete=django.db.models.deletion.SET_NULL,
related_name="+",
to="zerver.stream",
),
),
migrations.AlterField(
model_name="realm",
name="signup_notifications_stream",
field=models.ForeignKey(
blank=True,
null=True,
on_delete=django.db.models.deletion.SET_NULL,
related_name="+",
to="zerver.stream",
),
),
migrations.AlterField(
model_name="userprofile",
name="default_events_register_stream",
field=models.ForeignKey(
null=True,
on_delete=django.db.models.deletion.SET_NULL,
related_name="+",
to="zerver.stream",
),
),
migrations.AlterField(
model_name="userprofile",
name="default_sending_stream",
field=models.ForeignKey(
null=True,
on_delete=django.db.models.deletion.SET_NULL,
related_name="+",
to="zerver.stream",
),
),
]