cascade_mappers is a pretty flawed function which doesnt do a very good job of guessing what relationships you really want (i.e. cant do one-to-one, self referential, etc.), and its not in the docs for 0.2. its probably not working because while it didnt change, everything else did :) . ive committed a fix for the specific problem youre having in the trunk revision 1600, but i dont have a unit test for this so i dont know if it totally works. it would be helpful if you could submit a succinct testcase that I can add to the unit tests.
On Jun 7, 2006, at 4:10 PM, Valentin Kuznetsov wrote: > 2006-06-07 16:06 > > Hi, > once I switched from 0.1.7 to 0.2.2 I found many problems which I'm > gradually > trying to resolve in favor of new interface. The one which stuck me is > cascade_mappers. Here is snippet of code which worked under 0.1.7: > > map_tpr = mapper(T_PROCESSING,t_processing) > processingName = processing['processingName'] > map_tpn = mapper(T_PROCESSING_NAME,t_processing_name) > cascade_mappers(map_tpn,map_tpr) > > where lower case t_XXX are the tables and upper case T_XXX are the > classes. > So, with new version I got that following error: > > File "/home/vk/CMS/DBS/work/prototype/DBSSchema/DBSManager.py", > line 561, in > createProcessing > cascade_mappers(map_tpn,map_tpr) > File "/home/vk/CMS/DBS/work/prototype/DBSSchema/__init__.py", > line 108, in > cascade_mappers > > File "build/bdist.linux-i686/egg/sqlalchemy/orm/mapper.py", line > 885, in > __getattr__ > AttributeError: table > > I've compared orm/__init__.py (v0.2.2) with mapping/__init__.py > (v0.1.7) code > and looks like cascade_mappers functions are the same. > > Some help, explanation, would be helpfull. > Thanks, > Valentin. > > > _______________________________________________ > Sqlalchemy-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/sqlalchemy-users _______________________________________________ Sqlalchemy-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sqlalchemy-users
