On 8/21/2010 6:00 PM, Michael Bayer wrote:
On Aug 21, 2010, at 5:16 PM, Michael Hipp wrote:
How do I make this work with declarative?
If you were to use string literals with remote_side here, its the full expression would
be a string, i.e. remote_side="Option.id_". But that's not needed here since
id_ as a Column is right there, so remote_side=id_ .
I made that one change:
class Option(Base):
__tablename__ = 'options'
id_ = Column(Integer, primary_key=True)
parent_id = Column(Integer, ForeignKey('options.id_'))
parent = relationship('Option', backref=backref('children', order_by=name,
remote_side=id_))
Now I get:
TypeError: Incompatible collection type: None is not list-like
File "C:\dropbox\dev\auction\play.py", line 286, in <module>
opts2()
File "C:\dropbox\dev\auction\play.py", line 257, in opts2
opt.start()
File "C:\dropbox\dev\auction\options\logic.py", line 40, in start
rec = Option(name='__top__')
File "C:\dropbox\dev\auction\<string>", line 4, in __init__
File "C:\dev\virtenvs\auction\Lib\site-packages\sqlalchemy\orm\state.py", line
104, in initialize_instance
return manager.events.original_init(*mixed[1:], **kwargs)
File "C:\dropbox\dev\auction\options\models.py", line 47, in __init__
self.parent = parent
File "C:\dev\virtenvs\auction\Lib\site-packages\sqlalchemy\orm\attributes.py",
line 154, in __set__
instance_dict(instance), value, None)
File "C:\dev\virtenvs\auction\Lib\site-packages\sqlalchemy\orm\attributes.py",
line 755, in set
lambda adapter, i: adapter.adapt_like_to_iterable(i))
File "C:\dev\virtenvs\auction\Lib\site-packages\sqlalchemy\orm\attributes.py",
line 771, in _set_iterable
new_values = list(adapter(new_collection, iterable))
File "C:\dev\virtenvs\auction\Lib\site-packages\sqlalchemy\orm\attributes.py",
line 755, in <lambda>
lambda adapter, i: adapter.adapt_like_to_iterable(i))
File "C:\dev\virtenvs\auction\Lib\site-packages\sqlalchemy\orm\collections.py",
line 530, in adapt_like_to_iterable
given, wanted))
Any help?
Thanks,
Michael
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