On Feb 18, 2010, at 1:16 PM, Hollister wrote: > I ran into this also and it was caused by forgetting to map the class > to the table. > Make sure you have a line like: > > orm.mapper(TaskAction, taskaction_table) > > Mike: should there be a more specific error message for a missing > mapping?
there's a very specific error for that its sqlalchemy.orm.exc.UnmappedError. > > -aw > > > On Feb 3, 11:04 am, "Michael Bayer" <[email protected]> wrote: >> King Simon-NFHD78 wrote: >> >>> The line below the one you're complaining about is telling you what the >>> column in question is: >> >>> Invalid column expression '<class '__main__.TaskAction'>' >> >>> So somehow, you've passed your TaskAction class in a place where SA is >>> expecting a column expression. I think we'd need to see the command that >>> you actually typed in to work out what the problem is. >> >> Also, again, please upgrade to 0.5.8. Hundreds of bugs and sub-optimal >> behaviors have been fixed since 0.5.4p2 so you may get better results. >> >> >> >>> Simon >> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "sqlalchemy" group. >>> To post to this group, send email to [email protected]. >>> To unsubscribe from this group, send email to >>> [email protected]. >>> For more options, visit this group at >>> http://groups.google.com/group/sqlalchemy?hl=en. >> >> > > -- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/sqlalchemy?hl=en. > -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.
