app/models/todo.py

from sqlmodel import SQLModel, Field
from datetime import datetime
from uuid import UUID, uuid4


class Todo(SQLModel, table=True):
    __tablename__ = "todos"

    id: UUID = Field(default_factory=uuid4, primary_key=True)
    title: str = Field(max_length=255)
    completed: bool = Field(default=False)
    user_id: UUID = Field(index=True)
    created_at: datetime = Field(default_factory=datetime.utcnow)
    updated_at: datetime = Field(default_factory=datetime.utcnow)