Here's the `posts.py` file with CRUD endpoints for posts:

from typing import List
from fastapi import APIRouter, Depends, HTTPException
from sqlalchemy.orm import Session

from app.db import get_db
from app.models import Post
from app.schemas import PostCreate, PostResponse

router = APIRouter(
    prefix="/posts",
    tags=["posts"],

@router.post("/", response_model=PostResponse, status_code=201)
def create_post(post: PostCreate, db: Session = Depends(get_db)):
    new_post = Post(**post.dict())
    db.add(new_post)
    db.commit()
    db.refresh(new_post)
    return new_post

@router.get("/", response_model=List[PostResponse])
def get_all_posts(db: Session = Depends(get_db)):
    posts = db.query(Post).all()
    return posts

@router.get("/{post_id}", response_model=PostResponse)
def get_post(post_id: int, db: Session = Depends(get_db)):
    post = db.query(Post).filter(Post.id == post_id).first()
    if not post:
        raise HTTPException(status_code=404, detail="Post not found")
    return post

@router.put("/{post_id}", response_model=PostResponse)
def update_post(post_id: int, post: PostCreate, db: Session = Depends(get_db)):
    db_post = db.query(Post).filter(Post.id == post_id).first()
    if not db_post:
        raise HTTPException(status_code=404, detail="Post not found")
    for field, value in post.dict().items():
        setattr(db_post, field, value)
    db.commit()
    db.refresh(db_post)
    return db_post

@router.delete("/{post_id}", status_code=204)
def delete_post(post_id: int, db: Session = Depends(get_db)):
    post = db.query(Post).filter(Post.id == post_id).first()
    if not post:
        raise HTTPException(status_code=404, detail="Post not found")
    db.delete(post)
    db.commit()
    return None

This file defines five routes for CRUD operations on posts:


Note that this code assumes the existence of the following components: