feat(db): all domain models, initial Alembic migration (32 tables), seed script (8 districts, 89 regions, roles)

backend/app/models/advice.py

@@ -0,0 +1,19 @@
+"""Модели советов от регионов."""
+from datetime import datetime
+
+from sqlalchemy import DateTime, ForeignKey, String, Text, func
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.db.session import Base
+
+
+class Advice(Base):
+    __tablename__ = "advices"
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    region_id: Mapped[int] = mapped_column(ForeignKey("regions.id", ondelete="CASCADE"))
+    goal_id: Mapped[int | None] = mapped_column(ForeignKey("goals.id"))
+    author_user_id: Mapped[int | None] = mapped_column(ForeignKey("users.id"))
+    body: Mapped[str] = mapped_column(Text)
+    status: Mapped[str] = mapped_column(String(20), default="published")
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())