jaakko
8efbf96295
13 testiä, ForeignKey-relaatio, uniikki suomalainen testidata (Aleksis Kivi, Tove Jansson jne). Testattu Docker-kontissa.
46 lines
1.5 KiB
Python
46 lines
1.5 KiB
Python
"""Tietokantamallit — SQLAlchemy 2.0, Mapped-tyypitys, ForeignKey-relaatiot."""
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from datetime import datetime
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from sqlalchemy import String, Text, DateTime, ForeignKey, create_engine
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from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column, relationship, sessionmaker
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DATABASE_URL = "sqlite:///./app.db"
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engine = create_engine(DATABASE_URL, connect_args={"check_same_thread": False})
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SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
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class Base(DeclarativeBase):
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pass
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class Author(Base):
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"""Kirjoittaja — nimi, sähköposti ja bio."""
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__tablename__ = "authors"
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id: Mapped[int] = mapped_column(primary_key=True, index=True)
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name: Mapped[str] = mapped_column(String(255))
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email: Mapped[str] = mapped_column(String(255), unique=True)
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bio: Mapped[str | None] = mapped_column(Text, default=None)
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posts: Mapped[list["Post"]] = relationship(back_populates="author")
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class Post(Base):
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"""Blogipostaus — otsikko, sisältö, kirjoittaja, julkaisuaika ja tila."""
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__tablename__ = "posts"
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id: Mapped[int] = mapped_column(primary_key=True, index=True)
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title: Mapped[str] = mapped_column(String(255))
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content: Mapped[str] = mapped_column(Text)
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author_id: Mapped[int] = mapped_column(ForeignKey("authors.id"))
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published_at: Mapped[datetime | None] = mapped_column(DateTime, default=None)
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status: Mapped[str] = mapped_column(String(20), default="draft")
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author: Mapped["Author"] = relationship(back_populates="posts")
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Base.metadata.create_all(bind=engine)
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