# -*- coding utf-8 -*-

# User Management::Membership

from datetime import datetime

from .config import db

class Membership(db.Model):

    """ docstring """

    __tablename__ = 'memberships'

    id = db.Column(db.Integer, primary_key=True)

    uid = db.Column(db.Integer, db.ForeignKey('users.id'))

    gid = db.Column(db.Integer, db.ForeignKey('groups.id'))

    created = db.Column(db.DateTime, default=datetime.utcnow)

    user = db.relationship('User', backref='memberships')

    group = db.relationship('Group', backref='memberships')

    def __init__(self, user, group):

        self.user = user

        self.group = group

    # persist in the database

    def persist(self):

        db.session.add(self)

        db.session.commit()

    # delete from a database

    def remove(self):

        db.session.delete(self)

        db.session.commit()

    def __repr__(self):

        return'<Membership %d>' % self.uid