Hello, I am using SQLAlchemy 0.4.0.1, and am overriding attribute
behavior as described in
http://www.sqlalchemy.org/docs/04/mappers.html#advdatamapping_mapper_overriding,
which mainly says to set another name for the columns (like
'_something' instead of 'something'), use Python's property() method
to do whatever I want, and use `sqlalchemy.orm.synonym()` to make it
available in Query().filter_by() expressions.
But when I try to use my custom properties in filter() expressions,
such as `Resource.query.filter(Resource.url.endswith('.html'))`, it
won't work. I assume this is because the property doesn't have an
endswith method like `sqlalchemy.orm.attributes.InstrumentedAttribute`
does (i.e. `Resource.query.filter(Resource._url.endswith('.html'))`
does work).
Is there a way of making it work? I know it's just one character but
it makes it confusing to use th underscore in some attributes and in
some not; plus it looks ugly. So, is there a way of adding the
neccessary methods to my property? Or any other way which will make it
work normally?
Thanks.
--
Andres
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