I have a lot of declarative table instance methods that take only the
session as an argument, like this.
class SomeTable(Base):
# ...
def do_something(self, session):
# ...
I think I should be able instead to determine the session based on the
instance; relationship methods can do this.
https://docs.sqlalchemy.org/en/latest/orm/basic_relationships.html?highlight=many%20many#deleting-rows-from-the-many-to-many-table
How do I determine the session inside an instance method?
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