diff options
Diffstat (limited to 'lib/sqlalchemy/schema.py')
| -rw-r--r-- | lib/sqlalchemy/schema.py | 33 |
1 files changed, 26 insertions, 7 deletions
diff --git a/lib/sqlalchemy/schema.py b/lib/sqlalchemy/schema.py index 80d6018b8..223643c80 100644 --- a/lib/sqlalchemy/schema.py +++ b/lib/sqlalchemy/schema.py @@ -904,13 +904,32 @@ class Column(SchemaItem, expression.ColumnClause): raise exc.InvalidRequestError("Cannot initialize a sub-selectable" " with this Column object until it's 'name' has " "been assigned.") - c = self._constructor( - name or self.name, - self.type, - key = name or self.key, - primary_key = self.primary_key, - nullable = self.nullable, - quote=self.quote, _proxies=[self], *fk) + try: + c = self._constructor( + name or self.name, + self.type, + key = name or self.key, + primary_key = self.primary_key, + nullable = self.nullable, + quote=self.quote, _proxies=[self], *fk) + except TypeError, e: + # Py3K + #raise TypeError( + # "Could not create a copy of this %r object. " + # "Ensure the class includes a _constructor() " + # "attribute or method which accepts the " + # "standard Column constructor arguments, or " + # "references the Column class itself." % self.__class__) from e + # Py2K + raise TypeError( + "Could not create a copy of this %r object. " + "Ensure the class includes a _constructor() " + "attribute or method which accepts the " + "standard Column constructor arguments, or " + "references the Column class itself. " + "Original error: %s" % (self.__class__, e)) + # end Py2K + c.table = selectable selectable._columns.add(c) if self.primary_key: |