FastAPI Response
http Response는 clinet Request에 따른 serve에서 내려 보내는 메시지
요청 Request의 처리 상태, 여러 메타정보, 그리고 Content 데이터를 담고 있음
FastAPI Response Class 유형
Responses/main_response.py
from fastapi import FastAPI, Form, status
from fastapi.responses import (
JSONResponse,
HTMLResponse,
RedirectResponse
)
from pydantic import BaseModel
app = FastAPI()
#response_class는 default가 JSONResponse. response_class가 HTMLResponse일 경우 아래 코드는?
@app.get("/resp_json/{item_id}", response_class=JSONResponse)
async def response_json(item_id: int, q: str | None = None):
return JSONResponse(content={"message": "Hello World",
"item_id": item_id,
"q": q}, status_code=status.HTTP_200_OK)
# HTML Response
# http://127.0.0.1:8081/resp_html/2?item_name=min
@app.get("/resp_html/{item_id}", response_class=HTMLResponse)
async def response_html(item_id: int, item_name: str | None = None):
html_str = f'''
<html>
<body>
<h2>HTML Response</h2>
<p>item_id: {item_id}</p>
<p>item_name: {item_name}</p>
</body>
</html>
'''
return HTMLResponse(html_str, status_code=status.HTTP_200_OK)
# Redirect(Get -> Get)
# http://127.0.0.1:8081/redirect?comment=min
@app.get("/redirect")
async def redirect_only(comment: str | None = None):
print(f"redirect {comment}")
return RedirectResponse(url=f"/resp_html/3?item_name={comment}")
# Redirect(Post -> Get)
# status_code=status.HTTP_302_FOUND 없으면 (Post -> Post)
@app.post("/create_redirect")
async def create_item(item_id: int = Form(), item_name: str = Form()):
print(f"item_id: {item_id} item name: {item_name}")
return RedirectResponse(url=f"/resp_html/{item_id}?item_name={item_name}"
, status_code=status.HTTP_302_FOUND)
class Item(BaseModel):
name: str
description: str
price: float
tax: float | None = None
# Pydantic model for response data
class ItemResp(BaseModel):
name: str
description: str
price_with_tax: float
# reponse_model
@app.post("/create_item/", response_model=ItemResp
, status_code=status.HTTP_201_CREATED)
async def create_item_model(item: Item):
item_dict = item.model_dump
if item.tax:
price_with_tax = item.price + item.tax
else:
price_with_tax = item.price
item_resp = ItemResp(
name=item.name,
description=item.description,
price_with_tax=price_with_tax
)
# 반드시 response_model로 정의된 pydantic model을 반환.
return item_resp
uvicorn Responses.main_response:app --port=8081 --reload
{
"name": "Foo",
"description": "An optional description",
"price": 45.2,
"tax": 3.5
}