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

zerver/migrations/0774_rename_recent_topics_to_recent.py

@@ -0,0 +1,50 @@
+# Migration to rename 'recent_topics' to 'recent' in web_home_view field
+
+from django.db import migrations, transaction
+from django.db.backends.base.schema import BaseDatabaseSchemaEditor
+from django.db.migrations.state import StateApps
+from django.db.models import Max, Min
+
+
+def rename_recent_topics_to_recent(
+    apps: StateApps, schema_editor: BaseDatabaseSchemaEditor
+) -> None:
+    BATCH_SIZE = 10000
+    UserProfile = apps.get_model("zerver", "UserProfile")
+    RealmUserDefault = apps.get_model("zerver", "RealmUserDefault")
+
+    # Migrate UserProfile records
+    applicable_user_rows = UserProfile.objects.filter(web_home_view="recent_topics")
+    max_id = applicable_user_rows.aggregate(Max("id"))["id__max"]
+    lower_bound = applicable_user_rows.aggregate(Min("id"))["id__min"]
+
+    if max_id is not None and lower_bound is not None:
+        while lower_bound <= max_id:
+            upper_bound = lower_bound + BATCH_SIZE - 1
+            print(f"Processing UserProfile batch {lower_bound} to {upper_bound}")
+            with transaction.atomic():
+                UserProfile.objects.filter(
+                    id__gte=lower_bound,
+                    id__lte=upper_bound,
+                    web_home_view="recent_topics",
+                ).update(web_home_view="recent")
+            lower_bound = upper_bound + 1
+
+    # Migrate RealmUserDefault records (small table, no batching needed)
+    RealmUserDefault.objects.filter(web_home_view="recent_topics").update(web_home_view="recent")
+
+
+class Migration(migrations.Migration):
+    atomic = False
+
+    dependencies = [
+        ("zerver", "0773_rename_giphy_rating_realm_gif_rating_policy"),
+    ]
+
+    operations = [
+        migrations.RunPython(
+            rename_recent_topics_to_recent,
+            reverse_code=migrations.RunPython.noop,
+            elidable=True,
+        ),
+    ]