Bug Fix: Fix auto sync migration. (Fixes #1259)

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- **Migration 0037 fails on PostgreSQL when channels have been orphaned from their M3U account.** Channels created by auto-sync retain `auto_created=True` but get `auto_created_by=NULL` when the originating M3U account is deleted (`on_delete=SET_NULL`). The data migration step that re-attributes or demotes those channels updates the FK column via ORM `.save()` calls, which queues deferred constraint trigger events in PostgreSQL. The subsequent `ALTER TABLE ... DROP NOT NULL` on the same table then fails with `ObjectInUse: cannot ALTER TABLE because it has pending trigger events`. Fixed by issuing `SET CONSTRAINTS ALL IMMEDIATE` at the end of the data migration function to flush those pending events before the DDL runs. (Fixes #1259)
 - **XC stream URLs with no file extension now respect output format defaults.** `stream_xc` previously treated any extension other than `.mp4` as a forced `mpegts` request, including the empty-extension URLs that XC-compatible M3U playlists produce via `get.php`. Requests with no extension now pass `force_format=None` so the standard resolution chain (request param, user default, server default) applies correctly.
 - **XC M3U stream URLs now carry output profile and output format parameters.** The `get.php` M3U playlist previously emitted bare `/live/user/pass/id` URLs with no query string, causing per-user and server-wide output profile and output format settings to be silently ignored for XC clients. When `output_profile` or `output_format` parameters are present on the playlist request, they are now appended to every stream URL in the playlist so the proxy honours them on playback.
 

apps/channels/migrations/0037_auto_sync_overhaul.py

@@ -62,6 +62,9 @@ def backfill_auto_created_by_null(apps, schema_editor):
         f"(ambiguous/no streams): {demoted}"
     )
 
+    with schema_editor.connection.cursor() as cursor:
+        cursor.execute("SET CONSTRAINTS ALL IMMEDIATE")
+
 
 def reverse_auto_created_by_null(apps, schema_editor):
     # Forward decisions cannot be cleanly reverted (no record of the
@@ -101,6 +104,9 @@ def reverse_backfill_channel_number_nulls(apps, schema_editor):
         ch.save(update_fields=["channel_number"])
         next_num += 1.0
 
+    with schema_editor.connection.cursor() as cursor:
+        cursor.execute("SET CONSTRAINTS ALL IMMEDIATE")
+
 
 class Migration(migrations.Migration):