fix data base

bd/tables/response.py

@@ -0,0 +1,30 @@
+from sqlalchemy import Column, DateTime, ForeignKey, Text
+from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.sql import func
+from sqlalchemy.orm import relationship
+from .simple_base import Base
+import uuid
+
+
+class Response(Base):
+    __tablename__ = "responses"
+
+    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    poll_id = Column(UUID(as_uuid=True), ForeignKey("polls.id"), nullable=False)
+    user_id = Column(UUID(as_uuid=True), nullable=True)
+    submitted_at = Column(DateTime(timezone=True), server_default=func.now(), nullable=False)
+
+    answers = relationship("Answer", backref="response", cascade="all, delete-orphan", passive_deletes=True)
+
+
+class Answer(Base):
+    __tablename__ = "answers"
+
+    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    response_id = Column(UUID(as_uuid=True), ForeignKey("responses.id", ondelete="CASCADE"), nullable=False)
+    question_id = Column(UUID(as_uuid=True), ForeignKey("questions.id"), nullable=False)
+    choice_id = Column(UUID(as_uuid=True), nullable=True)
+    text = Column(Text, nullable=True)
+
+
+__all__ = ["Base", "Response", "Answer"]