Flask sqlalchemy many-to-many insert data

Question

I am trying to make a many to many relation here in Flask-SQLAlchemy, but it seems that I don\'t know how to fill the \"many to many identifier database

Answer 1

To extend cowgills answer, you can also add multiple entries at once using extend:

class_ = db.session.query(Class).first()
new_students = db.session.query(Student).all()
class_.students.extend(new_students)
db.session.add(class_)
db.session.commit()