Hi.
I have some (very simple) tables defined in my model, such as
extensions = Table('ast_user_extension', metadata,
Column("id", Integer, autoincrement=True,
primary_key=True),
Column("extension", Unicode(20), nullable=False),
Column("name", Unicode(50), nullable=False),
Column("start_date", DateTime, nullable=False),
Column("end_date", DateTime),
Column("user_id", Unicode(3), ForeignKey('user.id')),
Column("group_area", Unicode(100)),
Column("group_country_id", Unicode(3)),
CheckConstraint("end_date is null or end_date>=start_date",
name="ast_usr_ext_ck1"),
ForeignKeyConstraint(("group_area", "group_country_id"),
("group.area", "group.country_id"),
'group_fk'),
useexisting=True)
The thing is that when I'm working with the model in the interactive console
(ipython) and I try to
reload the module I'm getting KeyError: ForeignKeyConstraint() and so I need to
exit ipython
and log in again. It's not a critical problem but it's a bit cumbersome. What
can I do to fix it?
Find below the full error stack.
TIA,
Mariano
/home/mariano/Code/ReportingCom/asterisk/repdotcom/repdotcom/model/asterisk.py
in <module>(
)
28 ("group.area",
"group.country_id"),
29 'group_fk'),
---> 30 useexisting=True)
31 Index("ast_usr_ext_ix", *(extensions.c.extension, extensions.c.name))
32 Index("ast_usr_ext_gro_ix", *(extensions.c.group_area,
/home/mariano/Sandbox/reporting/lib/python2.6/site-packages/SQLAlchemy-0.6.2-py2.6.egg/sqla
lchemy/schema.pyc in __new__(cls, *args, **kw)
197 "columns on an existing Table object." % key)
198 table = metadata.tables[key]
--> 199 table._init_existing(*args, **kw)
200 return table
201 else:
/home/mariano/Sandbox/reporting/lib/python2.6/site-packages/SQLAlchemy-0.6.2-py2.6.egg/sqla
lchemy/schema.pyc in _init_existing(self, *args, **kwargs)
288
289 self._extra_kwargs(**kwargs)
--> 290 self._init_items(*args)
291
292 def _extra_kwargs(self, **kwargs):
/home/mariano/Sandbox/reporting/lib/python2.6/site-packages/SQLAlchemy-0.6.2-py2.6.egg/sqla
lchemy/schema.pyc in _init_items(self, *args)
57 for item in args:
58 if item is not None:
---> 59 item._set_parent(self)
60
61 def _set_parent(self, parent):
/home/mariano/Sandbox/reporting/lib/python2.6/site-packages/SQLAlchemy-0.6.2-py2.6.egg/sqla
lchemy/schema.pyc in _set_parent(self, table)
792 col.foreign_keys.remove(fk)
793 table.foreign_keys.remove(fk)
--> 794 table.constraints.remove(fk.constraint)
795
796 table._columns.replace(self)
KeyError: ForeignKeyConstraint()
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