Sqlalchemy - add columns to a query

Question

For example I am using the chinook database and I would like to convert the Name field into a slug. Slugify is a function from awesome-slugify.

Something like this in SQL

Select *, slugify(Name) as name_slug
from Artist

In sqlalchemy I have tried:

artist = Artist.query.add_columns(name_slug=slugify(Artist.Name)).all()

and

artist = Artist.query.add_columns(name_slug=[slugify(a.Name) for a in Artist.Name]).all()

I can generate a list of name slugs by doing to following in the terminal:

art = models.Artist.query.all()
name_slug = [slugify(a.Name) for a in art]
print(name_slug)

But I am not certain how to tie it all together.

Answer 1

我没有测试slugify，但这可能是你正在寻找的：

artist = Artist.query.add_columns(slugify(Artist.Name).label("name_slug")).all()