from sqlalchemy import Column, Integer, VARCHAR, ForeignKey, Float from sqlalchemy.orm import relationship from app.infrastructure.database.models import Base class City(Base): __tablename__ = 'cities' id = Column(Integer, primary_key=True, autoincrement=True) name = Column(VARCHAR(100), nullable=False) x_coordinate = Column(Float) y_coordinate = Column(Float) federal_district_id = Column(Integer, ForeignKey('federal_districts.id')) federal_district = relationship('FederalDistrict', back_populates='cities') accessories = relationship('Accessory', back_populates='city')