def closure(cls):
class_name = cls.__name__ + 'Localized'
tablename = plural_name(underscorize(class_name))
if db.metadata.tables.get(tablename) is not None:
return
# TODO: pass language from the babel detection
lang = u'en'
cls_columns = cls.__table__.get_children()
columns = dict([(c.name, c.copy()) for c in cls_columns if isinstance(c.type, (db.Unicode, db.UnicodeText))])
localized_names = columns.keys()
columns.update({
'parent_id': db.Column(db.Integer, db.ForeignKey(cls.__tablename__ + '.id'), nullable=False),
'parent': db.relationship(cls, backref='localized_ref'),
'locale': db.Column(db.Unicode(255), default=lang, index=True)
})
cls_localized = type(class_name, (db.Model, CRUDMixin), columns)
for field in localized_names:
def getter(self):
localized = cls_localized.query.filter_by(parent_id=self.id, locale=lang).first()
return getattr(localized, field) or None
def setter(self, value):
localized = cls_localized.query.filter_by(parent_id=self.id, locale=lang).first() or cls_localized(parent=self, locale=lang)
setattr(localized, field, value)
localized.save()
def expression(self):
return db.Query(columns[field]).filter(cls_localized.parent_id == self.id, cls_localized.locale == lang).as_scalar()
setattr(cls, field, hybrid_property(getter, setter, expr=expression))
closure(cls)
def __tablename__(cls):
""" We want our app to be more English for pluralization cases
"""
return plural_name(underscorize(cls.__name__))
# -*- encoding: utf-8 -*-
from datetime import datetime
# from sqlalchemy.ext.associationproxy import association_proxy
# from sqlalchemy.ext.declarative import declared_attr
from eventor import db
# from eventor.auth.models import User
from eventor.core.models import CRUDMixin
from eventor.core.utils import plural_name, underscorize
__all__ = ['Event']
plural_under = lambda name: plural_name(underscorize(name))
lazy_cascade = {
'lazy': 'dynamic',
'cascade': 'all',
}
class EventStory(db.Model, CRUDMixin):
user_id = db.Column(db.Integer, db.ForeignKey('users.id'))
author = db.relationship('User', backref=db.backref('stories', **lazy_cascade), uselist=False)
name = db.Column(db.Unicode(255), nullable=False)
description = db.Column(db.UnicodeText, nullable=False)
@property
def active(self):
return self.events.filter(Event.reg_starts <= datetime.utcnow(),
Event.reg_ends >= datetime.utcnow())
