FastAPI（5）- 查询参数 Query Parameters

from fastapi import FastAPI
import uvicorn


app = FastAPI()


# 路径参数+请求参数
@app.get("/items/{item_id}")
async def read_item(item_id: str, name: str):
    return {"item_id": item_id, "name": name}


if __name__ == "__main__":
    uvicorn.run(app="3_get_query:app", host="127.0.0.1", port=8080, reload=True, debug=True)

from typing import Optional

# 必传参数+可选参数
@app.get("/items")
async def read_item(item_id: str, name: Optional[str] = None):
    return {"item_id": item_id, "name": name}

# 查询参数类型转换
@app.get("/items/{item_id}")
async def read_item(item_id: str, q: Optional[str] = None, short: bool = False):
    item = {"item_id": item_id}
    if q:
        item.update({"q": q})
    if not short:
　　　　 # 如果 short == False，则加多一个键 description
        item.update(
            {"description": "This is an amazing item that has a long description"}
        )
    return item

from enum import Enum
from typing import Optional, List


# 自定义枚举类
class ModelName(Enum):
    boy = "男"
    girl = "女"
    unknown = "不知道"


@app.get("/item_enum")
async def read_item(name: str,
                    sex: Optional[ModelName] = ModelName.unknown):
    return {
        "name": name,
        "sex": sex
    }

# List[str]
@app.get("/list")
async def read_item(address: List[str] = None):
    return {"address": address}