37 lines
1.4 KiB
Python
37 lines
1.4 KiB
Python
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"""This module defines the SQL data model for devices."""
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import enum
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from sqlalchemy import Column, ForeignKey, Integer, String, DateTime, Uuid
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from sqlalchemy.sql.functions import now
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from sqlalchemy.orm import relationship
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from backend.database.engine import Base
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class DeviceModel(Base):
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"""Model for the device_model table."""
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__tablename__ = "device_models"
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id = Column('id', Integer, primary_key=True, autoincrement=True, index=True)
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name = Column('name', String, unique=True, nullable=False)
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picture_code = Column('picture_code', String, unique=True, nullable=False)
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instances = relationship("Device", back_populates="model", uselist=True, cascade="all, delete")
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class Device(Base):
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"""Model for the devices table."""
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__tablename__ = "devices"
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id = Column('id', Integer, primary_key=True, autoincrement=True, index=True)
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added = Column('added', DateTime(timezone=True), nullable=False, server_default=now())
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last_seen = Column('last_seen', DateTime(timezone=True), nullable=True, server_default=None)
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model_id = Column('model_id', Integer, ForeignKey('device_models.id', ondelete="CASCADE"), nullable=False)
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owner_id = Column('owner_id', Integer, ForeignKey('patients.user_id', ondelete="CASCADE"), nullable=False)
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model = relationship(DeviceModel, back_populates="instances", uselist=False)
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owner = relationship("Patient", back_populates="devices", uselist=False)
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