How to query Many-To-Many SQLAlchemy

Question

Import Flask and SQLAlchemy modules first:

from flask import Flask
from flask_sqlalchemy import SQLAlchemy

Answer 1

You can apply a filter in Artist.albums.any(), which will generate a subquery:

Artist.query.filter(Artist.albums.any(genre_id=genre.id)).all()

Or you can use a join() on albums:

Artist.query.join(Artist.albums).filter_by(genre_id=genre.id).all()