# tk_sql_app/db/models.py
from sqlalchemy import (Column, ForeignKey, ForeignKeyConstraint, Table,
UniqueConstraint, event, Boolean, Date, Integer, Text,
String)
from sqlalchemy.engine import Engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import relationship
Base = declarative_base()
person_activities = Table('person_activities', Base.metadata,
Column('id', Integer, primary_key=True),
Column('activity_id', ForeignKey('activity.id')),
Column('person_id', ForeignKey('person.id')))
person_activities.__table_args__ = UniqueConstraint('name', 'vehiclemodel_id')
class Activity(Base):
__tablename__ = 'activity'
id = Column(Integer, primary_key=True)
name = Column(String, unique=True, nullable=False)
attendees = relationship("Person",
secondary=person_activities,
back_populates="activities")
def __repr__(self):
return f"<Activity({self.name})>"
class Person(Base):
