Hi Folk, I'm finding difficult implement this features of SA .....
The example is: a simple table with a column "type". I want to do a
secondary mapper based on the primary mapper with the only different in
the column type='something'
create table person(
name text,
type text);
class Person ( Obj ):
pass
assign_mapper(context,
Person,
tbl['person'],
column_prefix = 'person_',
extension = SelectResultsExt(),
properties = {
bla bla
})
class Blonde( Person ):
pass
assign_mapper(context,
Blonde,
select( [tbl['anagrafica']], tbl['anagrafica'].c.tipo ==
'P').alias('blonde'),
non_primary = True,
)
This cause a lot of inspiegable problem to property that are perfecly
functional in the primary
sqlalchemy.exceptions.ArgumentError: Can't determine relation direction
for relationship 'Blabla.comune_nascita (Comune)' - foreign key columns
are present in neither the parent nor the child's mapped tables
Some ideas?
Glauco
--
+------------------------------------------------------------+
Glauco Uri - Programmatore
glauco(at)allevatori.com
Sfera Carta Software(r) [EMAIL PROTECTED]
Via Bazzanese,69 Casalecchio di Reno(BO) - Tel. 051591054
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