Sqlalchemy filter by field in list but keep original order?

Question

I have a Shoe model like this:

class Shoe(db.Model):
id = db.Column(db.Integer, primary_key = True)
asin = db.Column(db.String(20), index = True)

Answer 1

One way I've solved this problem in the past is by using a SQL CASE expression to tell the database in what order I'd like the rows returned. Using your example:

from sqlalchemy.sql.expression import case

ordering = case(
    {id: index for index, id in enumerate(my_list_of_ids)},
    value=Shoe.id
 )
Shoe.query.filter(Shoe.id.in_(my_list_of_ids)).order_by(ordering).all()