When using more complex, hierarchical models with differing settings on
how cascade deletes are handled it gets quite hard to figure out
beforehand what a delete() will exactly do with the database.
I couldn't find any way to get this piece of information ("Hey
SQLAlchemy, what will be deleted if I delete that object over there?")
from SQLAlchemy. Implementing this by myself doesn't really seem like an
option since this would result sooner or later in situations where my
prediction and the actual consequences of the delete() differ, which
would be very… unpleasant for the user.
(This question was also posted on SO:
http://stackoverflow.com/q/16875605/675646 )
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