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

zerver/migrations/0182_set_initial_value_is_private_flag.py

@@ -0,0 +1,63 @@
+from django.db import migrations
+from django.db.backends.base.schema import BaseDatabaseSchemaEditor
+from django.db.migrations.state import StateApps
+from django.db.models import F
+
+RECIPIENT_PERSONAL = 1
+RECIPIENT_HUDDLE = 3
+
+
+def set_initial_value_of_is_private_flag(
+    apps: StateApps, schema_editor: BaseDatabaseSchemaEditor
+) -> None:
+    UserMessage = apps.get_model("zerver", "UserMessage")
+    Message = apps.get_model("zerver", "Message")
+    if not Message.objects.exists():
+        return
+
+    i = 0
+    # Total is only used for the progress bar
+    total = Message.objects.filter(recipient__type__in=[1, 3]).count()
+    processed = 0
+
+    print("\nStart setting initial value for is_private flag...", flush=True)
+    while True:
+        range_end = i + 10000
+        message_ids = list(
+            Message.objects.filter(
+                recipient__type__in=[RECIPIENT_PERSONAL, RECIPIENT_HUDDLE],
+                id__gt=i,
+                id__lte=range_end,
+            )
+            .values_list("id", flat=True)
+            .order_by("id")
+        )
+        count = UserMessage.objects.filter(message_id__in=message_ids).update(
+            flags=F("flags").bitor(UserMessage.flags.is_private)
+        )
+        if count == 0 and range_end >= Message.objects.last().id:
+            break
+
+        i = range_end
+        processed += len(message_ids)
+        if total != 0:
+            percent = round((processed / total) * 100, 2)
+        else:
+            percent = 100.00
+        print(f"Processed {processed}/{total} {percent}%", flush=True)
+
+
+class Migration(migrations.Migration):
+    atomic = False
+
+    dependencies = [
+        ("zerver", "0181_userprofile_change_emojiset"),
+    ]
+
+    operations = [
+        migrations.RunPython(
+            set_initial_value_of_is_private_flag,
+            reverse_code=migrations.RunPython.noop,
+            elidable=True,
+        ),
+    ]