def remove_category(self, db: Session, db_obj: Product,
category: Category):
db_obj.categories = list(
filter(lambda c: c.id != category.id, db_obj.categories))
db.add(db_obj)
db.commit()
db.refresh(db_obj)
def add_categories(self, db: Session, db_obj: Product,
categories: List[Category]) -> List[Category]:
temp = [*db_obj.categories, *categories]
db_obj.categories = temp
db.add(db_obj)
db.commit()
db.refresh(db_obj)
return temp