On Nov 8, 2011, at 1:34 PM, sector119 wrote:
> Hello.
>
> Why comments_after_insert_listener return None for target.report - backref
> for TripReport.comments?
when you do...what exactly? this is just a mapping, looks fine. Can you
provide a fully working example please ?
>
> class TripReportComment(Base):
> __tablename__ = 'trip_report_comments'
>
> id = Column(Integer, primary_key=True)
> content = Column(UnicodeText, nullable=False)
> report_id = Column(Integer, ForeignKey('trip_reports.id'), nullable=False)
>
> def comments_after_insert_listener(mapper, connection, target):
> print target.report
>
> event.listen(TripReportComment, 'after_insert',
> comments_after_insert_listener)
>
> class TripReport(Base):
> __tablename__ = 'trip_reports'
>
> id = Column(Integer, primary_key=True)
> ...
> comments = relationship('TripReportComment', backref='report',
> cascade='all, delete-orphan', order_by='TripReportComment.id')
>
>
>
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