60 lines
2.2 KiB
Python
60 lines
2.2 KiB
Python
"""This module defines the SQL data model for users.
|
|
|
|
All users are either Patients or Administrators.
|
|
"""
|
|
|
|
import enum
|
|
|
|
from sqlalchemy import Column, ForeignKey, Integer, String, DateTime, Date, Enum, CheckConstraint
|
|
from sqlalchemy.sql.functions import now
|
|
from sqlalchemy.orm import relationship
|
|
|
|
from backend.database.engine import Base
|
|
from backend.models.devices import Device
|
|
|
|
|
|
class User(Base):
|
|
"""Model for the users table. Contains user info common to all user classes."""
|
|
|
|
__tablename__ = "users"
|
|
|
|
id = Column('id', Integer, primary_key=True, autoincrement=True, index=True)
|
|
email = Column('email', String, unique=True, nullable=False)
|
|
password = Column('password', String, nullable=False)
|
|
created = Column('created', DateTime(timezone=True), nullable=False, server_default=now())
|
|
updated = Column('updated', DateTime(timezone=True), nullable=False, server_default=now(), onupdate=now())
|
|
first_name = Column('first_name', String, nullable=False)
|
|
last_name = Column('last_name', String, nullable=False)
|
|
|
|
administrator = relationship("Administrator", back_populates="user", uselist=False, cascade="all, delete")
|
|
patient = relationship("Patient", back_populates="user", uselist=False, cascade="all, delete")
|
|
|
|
|
|
class Administrator(Base):
|
|
"""Model for the administrators table. Contains user info specific to administrators."""
|
|
|
|
__tablename__ = "administrators"
|
|
|
|
user_id = Column('user_id', Integer, ForeignKey('users.id', ondelete="CASCADE"), primary_key=True)
|
|
user = relationship(User, back_populates="administrator", uselist=False, cascade="all, delete")
|
|
|
|
|
|
class Gender(enum.Enum):
|
|
"""Gender (as assigned at birth) of a patient."""
|
|
|
|
male = 'm'
|
|
female = 'f'
|
|
|
|
|
|
class Patient(Base):
|
|
"""Model for the patients table. Contains user info specific to patients."""
|
|
|
|
__tablename__ = "patients"
|
|
|
|
user_id = Column('user_id', Integer, ForeignKey('users.id', ondelete="CASCADE"), primary_key=True)
|
|
date_of_birth = Column('date_of_birth', Date, nullable=False)
|
|
gender = Column('gender', Enum(Gender), nullable=False)
|
|
|
|
user = relationship(User, back_populates="patient", uselist=False, cascade="all, delete")
|
|
devices = relationship(Device, back_populates="owner", uselist=True, cascade="all, delete")
|