On Thu, Feb 19, 2009 at 12:57:07PM +0100, Alessandro Dentella wrote:
> Hi,
>
> in a working setup I added a ForeignKey to table 'cliente_cliente' as
> follows (client_id):
>
> class Project(Base):
> __tablename__ = "ticket_project"
> __table_args__ = {'useexisting' : True}
> id = Column(Integer, primary_key=True)
> date_create = Column(Date(),
> server_default=text("CURRENT_TIMESTAMP"), nullable=False)
> date_last_modify = Column(Date(), onupdate=func.now(),
> default=func.now())
> status = Column(ForeignKey('ticket_status.id'),
> nullable=False)
> name = Column(String(30), nullable=False)
> description = Column(Text, nullable=False)
> date_start = Column(Date, default=func.now())
> date_end = Column(Date)
> client_id = Column(ForeignKey(Cliente.id), nullable=True)
>
>
> this brakes session.query(Project).... with the message I report below.
>
> Of course I *did* create new field on table in the Postgres database.
> Note that if I use autoload on all Tables everything works correctly, so I
> tend to think I made a mistake in the definition, but I already spent some
> hours w/o any better understanding.
>
> I'll try to reproduce the error on a simpler situation but is not that
> easy and I'd like to understand if the error message tells something that
> could address me to the solution
>
> thanks in advance
> sandro
> *:-)
>
> Traceback (most recent call last):
> File "/home/misc/src/hg/py/fossati/fossati/job.py", line 86, in jobs_mask
> m.reload()
> File "../../sqlkit/widgets/mask/mask.py", line 67, in reload
> File "/misc/src/hg/py/sqlkit/sqlkit/widgets/common/sqlwidget.py", line 703,
> in reload
> self.records = query.all()
> File
> "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/orm/query.py", line
> 1007, in all
> return list(self)
> File
> "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/orm/query.py", line
> 1097, in __iter__
> context = self._compile_context()
> File
> "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/orm/query.py", line
> 1569, in _compile_context
> from_clause = sql_util.splice_joins(from_clause, eager_join,
> eager_join.stop_on)
> File "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/sql/util.py",
> line 252, in splice_joins
> right.onclause = adapter.traverse(right.onclause)
> File
> "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/sql/visitors.py",
> line 158, in traverse
> return replacement_traverse(obj, self.__traverse_options__, replace)
> File
> "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/sql/visitors.py",
> line 250, in replacement_traverse
> obj = clone(obj)
> File
> "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/sql/visitors.py",
> line 241, in clone
> newelem = replace(element)
> File
> "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/sql/visitors.py",
> line 155, in replace
> e = v.replace(elem)
> File "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/sql/util.py",
> line 473, in replace
> return self._corresponding_column(col, True)
> File "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/sql/util.py",
> line 451, in _corresponding_column
> newcol = self.selectable.corresponding_column(col,
> require_embedded=require_embedded)
> File
> "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/sql/expression.py",
> line 1834, in corresponding_column
> if self.c.contains_column(column):
> File "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/util.py",
> line 1358, in __get__
> obj.__dict__[self.__name__] = result = self.fget(obj)
> File
> "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/sql/expression.py",
> line 1867, in _columns
> self._export_columns()
> File
> "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/sql/expression.py",
> line 1897, in _export_columns
> self._populate_column_collection()
> File
> "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/sql/expression.py",
> line 2594, in _populate_column_collection
> for col in self.element.columns:
> File "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/util.py",
> line 1358, in __get__
> obj.__dict__[self.__name__] = result = self.fget(obj)
> File
> "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/sql/expression.py",
> line 1867, in _columns
> self._export_columns()
> File
> "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/sql/expression.py",
> line 1897, in _export_columns
> self._populate_column_collection()
> File
> "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/sql/expression.py",
> line 3428, in _populate_column_collection
> c._make_proxy(self, name=self.use_labels and c._label or None)
> File "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/schema.py",
> line 743, in _make_proxy
> [c._init_items(f) for f in fk]
> File "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/schema.py",
> line 54, in _init_items
> item._set_parent(self)
> File "/home/misc/src/sqlalchemy/sqlalchemy-svn/lib/sqlalchemy/schema.py",
> line 929, in _set_parent
> self.parent.table.foreign_keys.remove(fk)
> KeyError: ForeignKey(u'cliente_cliente.id')
>
> --
> Sandro Dentella *:-)
> http://sqlkit.argolinux.org SQLkit home page - PyGTK/python/sqlalchemy
updating sqlalchemy to tip fixed the problem. The problem was really fixed
with rel 4243 of my hg repo: "use ForeignKey.column as _colspec source in
Column._make_proxy(), preventing needless..."
sorry for not trying before...
sandro
*:-)
--
Sandro Dentella *:-)
http://sqlkit.argolinux.org SQLkit home page - PyGTK/python/sqlalchemy
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