[英]Unable to override dependency in FastAPI/FastAPi-Utils
这可能是一个新手问题。 我无法覆盖这个简单的 2 个文件 FastAPI 项目中的问候消息。 你能告诉我我可能做错了什么吗? 非常感谢你的帮助。
问候服务.py
from fastapi import Depends
from fastapi_utils.cbv import cbv
from fastapi_utils.inferring_router import InferringRouter
router = InferringRouter()
def get_msg():
return "Original Message"
@cbv(router)
class GreetingsService:
@router.get("/")
async def greet(self, msg: str = Depends(get_msg)):
return f"Hello from FastAPI {msg}"
主文件
from fastapi import FastAPI
from starlette.testclient import TestClient
import greetings_service
app = FastAPI()
app.include_router(greetings_service.router)
def get_new_msg():
return "New Message"
//Tried this, doesn't work
#app.dependency_overrides["get_msg"] = get_new_msg()
//These 2 lines doesn't work too
app.dependency_overrides["get_msg"] = get_new_msg()
greetings_service.router.dependency_overrides_provider = app
client = TestClient(app)
res = client.get("/")
print(res.content) #"Hello from FastAPI Original Message" :(
问题是这样的:
app.dependency_overrides["get_msg"] = get_new_msg()
您将依赖项作为字符串而不是实际依赖项传递。
像这样的事情会起作用:
from fastapi import FastAPI
from starlette.testclient import TestClient
import greetings_service
app = FastAPI()
app.include_router(greetings_service.router)
def get_new_msg():
return "New Message"
app.dependency_overrides[greetings_service.get_msg] = get_new_msg
client = TestClient(app)
res = client.get("/")
print(res.content)
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