onUpgrade method
Executes when creating database. This method should be called before using eloquent.
DB.instance.onUpgrade([
Future(() {
return (Database db, int oldversion,int newversion) async {};
}),
]);
//Or
DB.instance.onUpgrade([UserEloquent.onUpgrade]);
Implementation
void onUpgrade(List<Future<Function(Database, int, int)>> fn) {
_onUpgrade.addAll(fn);
}