'foreign_id': synonym(foreign_key_name),
'local_language': relationship(language_class,
primaryjoin=table.c.local_language_id == language_class.id,
- innerjoin=True,
- lazy='joined'),
+ innerjoin=True),
})
# Add full-table relations to the original class
class MultilangSession(Session):
"""A tiny Session subclass that adds support for a default language.
- Caller will need to assign something to `default_language` before this will
- actually work.
+ Needs to be used with `MultilangScopedSession`, below.
"""
- _default_language_id = 0 # Better fill this in, caller
+ default_language_id = None
def __init__(self, *args, **kwargs):
- self.language_class = kwargs.pop('language_class')
- super(MultilangSession, self).__init__(*args, **kwargs)
+ if 'default_language_id' in kwargs:
+ self.default_language_id = kwargs.pop('default_language_id')
- @property
- def default_language(self):
- return self.query(self.language_class) \
- .filter_by(id=self._default_language_id) \
- .one()
-
- @default_language.setter
- def default_language(self, new):
- self._default_language_id = new.id
-
- @default_language.deleter
- def default_language(self):
- try:
- del self._default_language_id
- except AttributeError:
- pass
+ super(MultilangSession, self).__init__(*args, **kwargs)
def execute(self, clause, params=None, *args, **kwargs):
if not params:
params = {}
- params.setdefault('_default_language_id', self._default_language_id)
+ params.setdefault('_default_language_id', self.default_language_id)
+
return super(MultilangSession, self).execute(
clause, params, *args, **kwargs)
class MultilangScopedSession(ScopedSession):
"""Dispatches language selection to the attached Session."""
- @property
- def default_language(self):
- return self.registry().default_language
+ def __init__(self, *args, **kwargs):
+ super(MultilangScopedSession, self).__init__(*args, **kwargs)
- @default_language.setter
- def default_language(self, new):
- self.registry().default_language = new
+ @property
+ def default_language_id(self):
+ """Passes the new default language id through to the current session.
+ """
+ return self.registry().default_language_id
+
+ @default_language_id.setter
+ def default_language_id(self, new):
+ self.registry().default_language_id = new