hi
i have following scenario (excluse the very brief "syntax"):
class BaseAddress:
street = ... text
class Office( BaseAddress):
some_fields
class Home( BaseAddress):
other_fields
class Person:
home = reference-to-HomeAdrress
office = reference-to-MainAdrress
otherstuff
now, i need something like
query(Person).filter(
(Person.home.street == 'foo')
& (Person.office.street == 'bar')
)
should that be something with .join() and then restoring joinpoint, or
what?
if i write the joins explicitly, like
query(Person).filter( _and(
Person.home_id == Home.id,
Home.street == 'foo',
Person.main_id == Office.id,
Office.street == 'bar' )
)
this does not work, the BaseAddress is used only once instead of being
aliased...
i know the above query is stupd, can be "optimized", it boils down to
query(Person).filter( _and(
Person.home_id == BaseAddress.id,
BaseAddress.street == 'foo',
Person.main_id == BaseAddress.id,
BaseAddress.street == 'bar' )
)
and then the need of aliasing is glaring... but this requires a human
to do it.
can theses alises be somehow made automaticaly ? e.g. multiple access
to same base table coming from different "subclasses" -> alias
ciao
svilen
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