查询参数和字符串校验：Query_Parameters_and_String

官方文档地址：https://fastapi.tiangolo.com/zh/tutorial/query-params-str-validations/

# -*- coding: UTF-8 -*-

from fastapi import FastAPI, Query

from typing import List

app = FastAPI()

#########################################################

# 限制长度

@app.get("/items/")

async def read_items(q: str = Query(..., min_length=3, max_length=50)):

    #填None就是默认值   填 ...则是必填项

    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}

    if q:

        results.update({"q": q})

    return results

#########################################################

#正则表达式

@app.get("/items2/")

async def read_items2(

                        q: str = Query(None, min_length=3, max_length=50, regex="^nice")

                     ):

    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}

    if q:

        results.update({"q": q})

    return results

#########################################################

#列表

@app.get("/items3/")

async def read_items3(q: List[str] = Query(["foo", "bar"])):

    query_items = {"q": q}

    return query_items

#########################################################

#别名参数

@app.get("/items4/")

async def read_items4(q: str = Query(None, alias="item-query")):

    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}

    if q:

        results.update({"q": q})

    return results

#########################################################

#弃用参数

@app.get("/items5/")

async def read_items5(

    q: str = Query(

        None,

        alias="item-query",

        title="Query string",

        description="Query string for the items to search in the database that have a good match",

        min_length=3,

        max_length=50,

        regex="^fixedquery$",

        deprecated=True,

    )

):

    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}

    if q:

        results.update({"q": q})

    return results

#########################################################

if __name__ == '__main__':

    import uvicorn

    uvicorn.run(app, host="127.0.0.1", port=8000)

巴特西

查询参数和字符串校验：Query_Parameters_and_String_Validations

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