Initial FastAPI + SQLite + Alembic

fastapi_demo/app/db/models.py

@@ -0,0 +1,53 @@
+from __future__ import annotations
+
+from sqlalchemy import String, DateTime, Text, ForeignKey, Integer, text
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+from datetime import datetime
+
+from fastapi_demo.app.db.session import Base
+
+
+class Asset(Base):
+    __tablename__ = "assets"
+
+    id: Mapped[str] = mapped_column(String, primary_key=True, index=True)
+    name: Mapped[str] = mapped_column(String, nullable=False)
+    serial: Mapped[str | None] = mapped_column(String, nullable=True)
+
+    status: Mapped[str] = mapped_column(String, nullable=False)
+
+    revision: Mapped[int] = mapped_column(
+        Integer,
+        nullable=False,
+        server_default=text("0"),
+    )
+
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), nullable=False
+    )
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), nullable=False
+    )
+
+    events: Mapped[list["AssetEvent"]] = relationship(
+        "AssetEvent",
+        back_populates="asset",
+        cascade="all, delete-orphan",
+        passive_deletes=True,
+    )
+
+
+class AssetEvent(Base):
+    __tablename__ = "asset_events"
+
+    id: Mapped[str] = mapped_column(String, primary_key=True, index=True)
+    asset_id: Mapped[str] = mapped_column(
+        String, ForeignKey("assets.id", ondelete="CASCADE"), index=True
+    )
+
+    from_status: Mapped[str] = mapped_column(String, nullable=False)
+    to_status: Mapped[str] = mapped_column(String, nullable=False)
+    at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False)
+    note: Mapped[str | None] = mapped_column(Text, nullable=True)
+
+    asset: Mapped["Asset"] = relationship("Asset", back_populates="events")