from flask.ext.sqlalchemy import SQLAlchemy
from sqlalchemy.ext.declarative import declared_attr
db = SQLAlchemy()
DB_STRING_TYPE = db.Unicode(256)
def init_db(app):
db.init_app(app)
db.app = app
db.create_all()
class Base(db.Model):
__abstract__ = True
@declared_attr
def id(cls):
return db.Column('id', db.Integer, primary_key=True,
autoincrement=True)
