csci-backend/app/db/models/maintenancejob.py

from sqlalchemy import Column, Integer, String, DateTime, ForeignKey
from sqlalchemy.orm import relationship
from db.base import Base


class MaintenanceJob(Base):
    Id = Column(Integer, primary_key=True, index=True)
    # a list of weak entities of class CarPart
    CarParts = relationship("CarPart", back_populates="parent")
    FinishedBy = relationship("User", back_populates="maintenanceJobs", foreign_keys="MaintenanceJob.MaintenanceWorker")
    VehicleID = Column(ForeignKey("vehicle.Id"), nullable=False)
    Vehicle = relationship("Vehicle", back_populates="maintenanceJobs")
    VehicleDriverId = Column(ForeignKey("user.Id"), nullable=False)
    Description = Column(String, nullable=False)
    Date = Column(DateTime, nullable=False)
    MaintenanceWorker = Column(ForeignKey("user.Id"), nullable=True)
    Status = Column(String, nullable=False)