That makes sense, Thanks, Kent On Mar 7, 2013, at 12:09 PM, Michael Bayer <mike...@zzzcomputing.com> wrote:
> > The hybrid attribute is a Python function that invokes when it's called. So > it doesn't make sense for it to be a column property since there is no > attribute to be populated. "Undeferred" also doesn't make any sense because > the hybrid already calls a local in-Python function when accessed at the > instance level, not a database call. > > A traditional column_property() can be deferred or undeterred, and when > called at the instance level will emit SQL to the database. > > If you have an attribute that should only populate via SQL, then you need to > just use a column_property(). > > > > On Mar 7, 2013, at 11:42 AM, Kent <jkentbo...@gmail.com> wrote: > >> I suppose what I'm really after is a column_property (for class level) and >> plain descriptor (for instance level), which is exactly what Hybrid >> attributes are meant to be, but I wanted them to be part of the mapper and >> undeferred in some cases. >> >> On Thursday, March 7, 2013 11:36:37 AM UTC-5, Kent wrote: >>> >>> I notice that Hybrid Attributes don't show up as mapper properties (since >>> they are class wide instead of mapper specific, I suppose). I couldn't >>> find documentation on whether I can "undefer" these? Or can I create a >>> synonym or column_property from a hybrid attribute in the mapper? >> >> -- >> You received this message because you are subscribed to the Google Groups >> "sqlalchemy" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to sqlalchemy+unsubscr...@googlegroups.com. >> To post to this group, send email to sqlalchemy@googlegroups.com. >> Visit this group at http://groups.google.com/group/sqlalchemy?hl=en. >> For more options, visit https://groups.google.com/groups/opt_out. > > -- > You received this message because you are subscribed to a topic in the Google > Groups "sqlalchemy" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/sqlalchemy/kO6KS88-2xU/unsubscribe?hl=en. > To unsubscribe from this group and all its topics, send an email to > sqlalchemy+unsubscr...@googlegroups.com. > To post to this group, send email to sqlalchemy@googlegroups.com. > Visit this group at http://groups.google.com/group/sqlalchemy?hl=en. > For more options, visit https://groups.google.com/groups/opt_out. > > -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at http://groups.google.com/group/sqlalchemy?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
