from flask.ext.sqlalchemy import SQLAlchemy
db = SQLAlchemy(app)

class Base(db.Model):
    __abstract__ = True

    created_on = db.Column(db.DateTime, default=db.func.now())
    updated_on = db.Column(db.DateTime, default=db.func.now(), onupdate=db.func.now())


class User(Base):
    __tablename__ = 'users'
    id = db.Column(db.Integer, primary_key = True)
    email = db.Column(db.String(255), unique = True)