diff --git a/cms/djangoapps/contentstore/migrations/0015_mariadb_uuid_conversion.py b/cms/djangoapps/contentstore/migrations/0015_mariadb_uuid_conversion.py new file mode 100644 index 000000000000..923b678a31ef --- /dev/null +++ b/cms/djangoapps/contentstore/migrations/0015_mariadb_uuid_conversion.py @@ -0,0 +1,74 @@ +# Generated migration for MariaDB UUID field conversion (Django 5.2) +""" +Migration to convert UUIDField from char(32) to uuid type for MariaDB compatibility. + +This migration is necessary because Django 5 changed the behavior of UUIDField for MariaDB +databases from using CharField(32) to using a proper UUID type. This change isn't managed +automatically, so we need to generate migrations to safely convert the columns. + +This migration only executes for MariaDB databases and is a no-op for other backends. + +See: https://www.albertyw.com/note/django-5-mariadb-uuidfield +""" + +from django.db import migrations + + +def apply_mariadb_migration(apps, schema_editor): + """Apply the migration only for MariaDB databases.""" + connection = schema_editor.connection + + # Check if this is a MariaDB database + if connection.vendor != 'mysql': + return + + # Additional check for MariaDB specifically (vs MySQL) + with connection.cursor() as cursor: + cursor.execute("SELECT VERSION()") + version = cursor.fetchone()[0] + if 'mariadb' not in version.lower(): + return + + # Apply the field changes for MariaDB + with connection.cursor() as cursor: + cursor.execute( + "ALTER TABLE oel_publishing_learningpackage " + "MODIFY uuid uuid NOT NULL" + ) + + +def reverse_mariadb_migration(apps, schema_editor): + """Reverse the migration only for MariaDB databases.""" + connection = schema_editor.connection + + # Check if this is a MariaDB database + if connection.vendor != 'mysql': + return + + # Additional check for MariaDB specifically (vs MySQL) + with connection.cursor() as cursor: + cursor.execute("SELECT VERSION()") + version = cursor.fetchone()[0] + if 'mariadb' not in version.lower(): + return + + # Reverse the field changes for MariaDB + with connection.cursor() as cursor: + cursor.execute( + "ALTER TABLE oel_publishing_learningpackage " + "MODIFY uuid char(32) NOT NULL" + ) + + +class Migration(migrations.Migration): + + dependencies = [ + ('contentstore', '0014_remove_componentlink_downstream_is_modified_and_more'), + ] + + operations = [ + migrations.RunPython( + code=apply_mariadb_migration, + reverse_code=reverse_mariadb_migration, + ), + ]