are rows in the created tables.
- `(relation_name)_local`, a relation to the row in the new table that
matches the current default language.
- - `(relation_name)_class`, the class created by this function.
+ - `(relation_name)_table`, the class created by this function.
Note that these are distinct relations. Even though the former necessarily
includes the latter, SQLAlchemy doesn't treat them as linked; loading one
return Translations
class MultilangSession(Session):
- """A tiny Session subclass that adds support for a default language."""
- _default_language_id = 9 # English. XXX magic constant
+ """A tiny Session subclass that adds support for a default language.
- @property
- def default_language(self):
- # Need to import tables here to avoid a circular dependency
- from pokedex.db import tables
- query = self.query(tables.Language)
- query = query.filter_by(id=self._default_language_id)
- return query.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
+ Needs to be used with `MultilangScopedSession`, below.
+ """
+ default_language_id = None
+
+ def __init__(self, *args, **kwargs):
+ if 'default_language_id' in kwargs:
+ self.default_language_id = kwargs.pop('default_language_id')
+
+ 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
-
- @default_language.setter
- def default_language(self, new):
- self.registry().default_language = new
+ def __init__(self, *args, **kwargs):
+ super(MultilangScopedSession, self).__init__(*args, **kwargs)
- def remove(self):
- del self.registry().default_language
- super(MultilangScopedSession, self).remove()
+ @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