updateItem method
Implementation
Future<int> updateItem({
required String tableName,
required String id,
required Map<String, dynamic> item,
}) async {
final db = await database;
item['last_updated'] = DateTime.now().toIso8601String();
return await db.update(
tableName,
_serializeItem(item),
where: 'id = ?',
whereArgs: [id],
);
}