Better migration fix for Django 6.0

ram/bookshelf/migrations/0016_basebook_book_catalogue.py

@@ -1,7 +1,8 @@
 # Generated by Django 5.1.2 on 2024-11-27 16:35
 
 import django.db.models.deletion
-from django.db import migrations, models
+from django.db import migrations, models, connection
+from django.db.utils import ProgrammingError, OperationalError
 
 
 def basebook_to_book(apps, schema_editor):
@@ -16,6 +17,19 @@ def basebook_to_book(apps, schema_editor):
         b.authors.set(row.old_authors.all())
 
 
+def drop_temporary_tables(apps, schema_editor):
+    try:
+        with connection.cursor() as cursor:
+            cursor.execute(
+                'DROP TABLE IF EXISTS bookshelf_basebook_old_authors'
+            )
+            cursor.execute(
+                'DROP TABLE IF EXISTS bookshelf_basebook_authors'
+            )
+    except (ProgrammingError, OperationalError):
+        pass
+
+
 class Migration(migrations.Migration):
 
     dependencies = [
@@ -101,10 +115,6 @@ class Migration(migrations.Migration):
             model_name="basebook",
             name="old_title",
         ),
-        # migrations.RemoveField(
-        #     model_name="basebook",
-        #     name="old_authors",
-        # ),
         migrations.RemoveField(
             model_name="basebook",
             name="old_publisher",
@@ -138,4 +148,16 @@ class Migration(migrations.Migration):
             },
             bases=("bookshelf.basebook",),
         ),
+        # Required by Dajngo 6.0 on SQLite
+        migrations.SeparateDatabaseAndState(
+            state_operations=[
+                migrations.RemoveField(
+                    model_name="basebook",
+                    name="old_authors",
+                ),
+            ],
+            database_operations=[
+                migrations.RunPython(drop_temporary_tables)
+            ]
+        ),
     ]