The-Hunt/app/models/game_player.py

from sqlalchemy.ext.associationproxy import association_proxy

from app import db
from app.models import Role, NotificationPlayer

class GamePlayer(db.Model):
    __tablename__ = 'game_player'
    id = db.Column(db.Integer, primary_key=True)
    game_id = db.Column(db.Integer, db.ForeignKey('game.id'), primary_key=True, nullable=False)
    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), primary_key=True, nullable=False)
    role = db.Column(db.Enum(Role), server_default=Role(0).name, nullable=False)
    game = db.relationship('Game', back_populates='game_players')
    user = db.relationship('User', back_populates='user_games')

    player_notifications = db.relationship(
        'NotificationPlayer',
        back_populates='recipient',
        cascade='save-update, merge, delete, delete-orphan')
    notifications = association_proxy('player_notifications', 'notification',
        creator=lambda notification: NotificationPlayer(notification=notification))