SQLAlchemy - can you add custom methods to the query object?

Question

Is there a way to create custom methods to the query object so you can do something like this?

User.query.all_active()

Where all_acti

Answer 1

this work for me finely

class ParentQuery(Query):
    def _get_models(self):     
        if hasattr(query, 'attr'):
            return [query.attr.target_mapper]
        else:
            return self._mapper_zero().class_

    def FilterByCustomer(self):
        model_class = self._get_models()
        return self.filter(model_class.customerId == int(g.customer.get('customerId')))


class AccountWorkflowModel(db.Model):
    query_class = ParentQuery
    .................