from typing import Optional
from datetime import datetime
from pydantic import BaseModel
class PostsCreate(BaseModel):
    title: str
    content: str
    published: bool = True
    author_id: int
class Posts(BaseModel):
    id: int
    title: str
    content: str
    published: bool
    created_at: datetime
    updated_at: Optional[datetime] = None
    author_id: int
    class Config:
        orm_mode = True