我有一个POST FastAPI方法。我不想构造一个类或查询字符串。因此,我决定应用Body()
方法。
@app.post("/test-single-int")
async def test_single_int(
t: int = Body(...)
):
pass
这是请求
POST http://localhost:8000/test-single-int/
{
"t": 10
}
这是回应
HTTP/1.1 422 Unprocessable Entity
date: Fri, 22 May 2020 10:00:16 GMT
server: uvicorn
content-length: 83
content-type: application/json
connection: close
{
"detail": [
{
"loc": [
"body",
"s"
],
"msg": "str type expected",
"type": "type_error.str"
}
]
}
但是,在尝试了许多样本后,我发现如果我有多个Body()
,它们将不会出错。例如,
@app.post("/test-multi-mix")
async def test_multi_param(
s: str = Body(...),
t: int = Body(...),
):
pass
请求
POST http://localhost:8000/test-multi-mix/
{
"s": "test",
"t": 10
}
响应
HTTP/1.1 200 OK
date: Fri, 22 May 2020 10:16:12 GMT
server: uvicorn
content-length: 4
content-type: application/json
connection: close
null
有人对我的实现有任何想法吗?有错吗这不是最佳实践吗?还是一个错误?
这不是错误,它是Body的行为方式,它存在用于“扩展”请求参数,如何记录文档outlines:
class Item(BaseModel):
name: str
class User(BaseModel):
username: str
full_name: str = None
@app.put("/items/{item_id}")
async def update_item(
*,
item_id: int,
item: Item,
user: User,
importance: int = Body(..., gt=0),
q: str = None
):
pass
此视图的有效请求正文为:
{
"item": {
"name": "Foo",
"tax": 3.2
},
"user": {
"username": "dave",
"full_name": "Dave Grohl"
},
"importance": 5
}
如果您真的想单独使用Body,则必须指定embed=True
,该代码可以正常工作:
embed=True