I have two models:
class Report(Base):
__tablename__ = 'report'
id = Column(Integer, primary_key=True)
class ReportPhoto(Base):
__tablename__ = 'report_photo'
id = Column(Integer, primary_key=True)
report_id = Column(Integer, ForeignKey(Report.id), nullable=False)
report = relationship(Report, uselist=False,
backref=backref('report_photo', uselist=True))
And I would like to add column to Report model which indicates is there any
records within ReportPhoto. I try to use [column_property][1] this way:
class Report(Base):
__tablename__ = 'report'
id = Column(Integer, primary_key=True)
has_photo = column_property(
select(ReportPhoto.any())
)
but get an error `NameError: name 'ReportPhoto' is not defined`. How I can
fix this issue?
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