Initial commit: stock market platform

backend/app/models/watchlist.py

@@ -0,0 +1,18 @@
+from datetime import datetime
+from sqlalchemy import String, Integer, ForeignKey, DateTime, func, UniqueConstraint
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+from app.core.database import Base
+
+
+class Watchlist(Base):
+    __tablename__ = "watchlist"
+    __table_args__ = (UniqueConstraint("user_id", "symbol", name="uq_user_symbol"),)
+
+    id: Mapped[int] = mapped_column(primary_key=True, index=True)
+    user_id: Mapped[int] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"), index=True)
+    symbol: Mapped[str] = mapped_column(String(20), nullable=False)
+    name: Mapped[str] = mapped_column(String(50), nullable=False)
+    sort_order: Mapped[int] = mapped_column(Integer, default=0)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())
+
+    user: Mapped["User"] = relationship(back_populates="watchlist")