Opened 16 years ago
Last modified 16 years ago
#10112 closed
Python Crash with ORM Inheritance — at Initial Version
| Reported by: | Owned by: | nobody | |
|---|---|---|---|
| Component: | Database layer (models, ORM) | Version: | 1.0 |
| Severity: | Keywords: | ||
| Cc: | Triage Stage: | Unreviewed | |
| Has patch: | no | Needs documentation: | no |
| Needs tests: | no | Patch needs improvement: | no |
| Easy pickings: | no | UI/UX: | no |
Description
This bug causes a reproducible crash in the python interpreter [python issue5014] on my system, so I can't give a specific traceback, but I believe that an infinite recursion is generated when I try and use the db_column in a TextField.
Basically, I'm modifying one of my models to allow inheritance of a field so rather than keep the existing field which cannot be overridden with a function in the subclass, I'm creating a property to access the field - ie:
class Foo(model):
_bar = TextField(db_column = 'bar')
bar = property(lambda x: x.bar)
class Bla(Foo):
@property
def bar(self): whatever
I think the db_column = 'bar' causes problems as there is a Foo.bar attribute so somewhere in the model this is screwing things up by making an infinite loop which for some reason is breaking the python runtime.
Reproducible with revision 9787