snapshot of https://github.com/zulip/zulip.git @ 48c69911c7dd4e03b20552eb3bd77ad8151c1357 (2026-09-15)

zerver/migrations/0232_make_archive_transaction_field_not_nullable.py

@@ -0,0 +1,40 @@
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    """
+    Tables cannot have data deleted from them and be altered in a single transaction,
+    but we need the DELETEs to be atomic together. So we set atomic=False for the migration
+    in general, and run the DELETEs in one transaction, and AlterField in another.
+    """
+
+    atomic = False
+
+    dependencies = [
+        ("zerver", "0231_add_archive_transaction_model"),
+    ]
+
+    operations = [
+        migrations.RunSQL(
+            """
+        BEGIN;
+        DELETE FROM zerver_archivedusermessage;
+        DELETE FROM zerver_archivedreaction;
+        DELETE FROM zerver_archivedsubmessage;
+        DELETE FROM zerver_archivedattachment_messages;
+        DELETE FROM zerver_archivedattachment;
+        DELETE FROM zerver_archivedmessage;
+        DELETE FROM zerver_archivetransaction;
+        COMMIT;
+        """,
+            elidable=True,
+        ),
+        migrations.AlterField(
+            model_name="archivedmessage",
+            name="archive_transaction",
+            field=models.ForeignKey(
+                on_delete=django.db.models.deletion.CASCADE, to="zerver.ArchiveTransaction"
+            ),
+        ),
+    ]