Initial commit

backend/app/models/follow.py

@@ -0,0 +1,17 @@
+from sqlalchemy import Column, Integer, String, DateTime, UniqueConstraint
+from sqlalchemy.sql import func
+
+from app.database import Base
+
+
+class Follow(Base):
+    __tablename__ = "follows"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    follow_type = Column(String(20), nullable=False)   # bill | member | topic
+    follow_value = Column(String, nullable=False)       # bill_id | bioguide_id | tag string
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+
+    __table_args__ = (
+        UniqueConstraint("follow_type", "follow_value", name="uq_follows_type_value"),
+    )