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https://github.com/PaiGramTeam/sqlmodel.git
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79 lines
2.1 KiB
Python
79 lines
2.1 KiB
Python
from typing import Optional
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from sqlmodel import Field, Session, SQLModel, create_engine, select
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class Team(SQLModel, table=True):
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id: Optional[int] = Field(default=None, primary_key=True)
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name: str = Field(index=True)
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headquarters: str
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class Hero(SQLModel, table=True):
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id: Optional[int] = Field(default=None, primary_key=True)
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name: str = Field(index=True)
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secret_name: str
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age: Optional[int] = Field(default=None, index=True)
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team_id: Optional[int] = Field(default=None, foreign_key="team.id")
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sqlite_file_name = "database.db"
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sqlite_url = f"sqlite:///{sqlite_file_name}"
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engine = create_engine(sqlite_url, echo=True)
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def create_db_and_tables():
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SQLModel.metadata.create_all(engine)
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def create_heroes():
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with Session(engine) as session:
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team_preventers = Team(name="Preventers", headquarters="Sharp Tower")
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team_z_force = Team(name="Z-Force", headquarters="Sister Margaret’s Bar")
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session.add(team_preventers)
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session.add(team_z_force)
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session.commit()
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hero_deadpond = Hero(
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name="Deadpond", secret_name="Dive Wilson", team_id=team_z_force.id
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)
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hero_rusty_man = Hero(
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name="Rusty-Man",
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secret_name="Tommy Sharp",
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age=48,
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team_id=team_preventers.id,
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)
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hero_spider_boy = Hero(name="Spider-Boy", secret_name="Pedro Parqueador")
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session.add(hero_deadpond)
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session.add(hero_rusty_man)
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session.add(hero_spider_boy)
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session.commit()
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session.refresh(hero_deadpond)
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session.refresh(hero_rusty_man)
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session.refresh(hero_spider_boy)
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print("Created hero:", hero_deadpond)
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print("Created hero:", hero_rusty_man)
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print("Created hero:", hero_spider_boy)
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def select_heroes():
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with Session(engine) as session:
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statement = select(Hero, Team).where(Hero.team_id == Team.id)
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results = session.exec(statement)
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for hero, team in results:
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print("Hero:", hero, "Team:", team)
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def main():
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create_db_and_tables()
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create_heroes()
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select_heroes()
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if __name__ == "__main__":
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main()
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