track/backend/app/models/message.py

"""产品协同留言板模型"""
import uuid
from datetime import datetime
from sqlalchemy import String, Text, DateTime, ForeignKey
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import Mapped, mapped_column

from app.models.base import Base
from app.core.time_utils import get_beijing_time


class ProductMessage(Base):
    __tablename__ = "product_messages"

    id: Mapped[uuid.UUID] = mapped_column(
        UUID(as_uuid=True), primary_key=True, default=uuid.uuid4,
    )
    product_id: Mapped[uuid.UUID] = mapped_column(
        UUID(as_uuid=True),
        ForeignKey("products.id", ondelete="CASCADE"),
        index=True,
        nullable=False,
        comment="所属产品 ID",
    )
    operator_id: Mapped[str] = mapped_column(
        String(50), nullable=False, comment="留言人姓名或工号",
    )
    content: Mapped[str] = mapped_column(
        Text, nullable=False, comment="留言内容",
    )
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), default=get_beijing_time, comment="留言时间（北京时间）",
    )