I have a property of a Model that is a hash of another property of the same Model, eg:
class MyModel(db.Model):
something = db.StringProperty()
something_hash = db.StringProperty()
def generate_hash(self):
self.something_hash = sha1(self.something)
I want generate_hash() to be automatically called just before the entity is
put() into the Datastore, without the developer having to explicitly call
entity.generate_hash().
I know I can create a put() method that makes such a call and then calls
put() on the superclass, but (a) is that the best way to do it, and (b) if
the put() is part of a batch put (eg. via db.put(entities)), will the put()
method of each model instance still be called?
Nick
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