from app import db class TakeoffLanding(db.Model): __tablename__ = "takeoff_landings" device_id = db.Column(db.Integer, db.ForeignKey("devices.id", ondelete="SET NULL"), primary_key=True) airport_id = db.Column(db.Integer, db.ForeignKey("airports.id", ondelete="SET NULL"), primary_key=True) timestamp = db.Column(db.DateTime, primary_key=True) is_takeoff = db.Column(db.Boolean) track = db.Column(db.SmallInteger) # Relations airport = db.relationship("Airport", foreign_keys=[airport_id], backref="takeoff_landings") device = db.relationship("Device", foreign_keys=[device_id], backref="takeoff_landings", order_by="TakeoffLanding.timestamp")