flask_apispec库使flask应用程序在使用use_kwargs装饰器时崩溃

Question

我正在Python 3.8中使用flask_Restful、flask_apispec和棉花糖构建一个Restful API。当我启用use_kwargs装饰器时，我的应用程序在使用TypeError: post() takes 1 positional argument but 2 were given的POST上崩溃

如果您能帮我解决这个错误，我将不胜感激。

# requirements.txt
aniso8601==9.0.1
apispec==5.1.1
certifi==2021.10.8
charset-normalizer==2.0.7
click==8.0.3
Flask==2.0.2
flask-apispec==0.11.0
Flask-RESTful==0.3.9
gunicorn==20.1.0
idna==3.3
itsdangerous==2.0.1
Jinja2==3.0.2
MarkupSafe==2.0.1
marshmallow==3.14.0
pytz==2021.3
requests==2.26.0
six==1.16.0
tableauserverclient==0.17.0
urllib3==1.26.7
webargs==8.0.1
Werkzeug==2.0.2

from apispec import APISpec
from flask import Flask, request
from flask_restful import Resource, Api
from apispec.ext.marshmallow import MarshmallowPlugin
from flask_apispec.extension import FlaskApiSpec
from marshmallow import Schema, fields, post_load, ValidationError
from flask_apispec.views import MethodResource
from flask_apispec import use_kwargs, marshal_with
app = Flask(__name__)  # Flask app instance initiated
api = Api(app)  # Flask restful wraps Flask app around it.
app.config.update({
'APISPEC_SPEC': APISpec(
title='Kube Controller',
version='v1',
plugins=[MarshmallowPlugin()],
openapi_version='2.0.0'
),
'APISPEC_SWAGGER_URL': '/swagger/',  # URI to access API Doc JSON
'APISPEC_SWAGGER_UI_URL': '/swagger-ui/'  # URI to access UI of API Doc
})
docs = FlaskApiSpec(app)

class AwesomeRequestSchema(Schema):
api_type = fields.String(required=True)
@post_load
def create(self, data, **kwargs):
return MyAPI(**data)

class MyAPI:
def __init__(self, api_type):
self.api_type = api_type
self.message = "hi"

class AwesomeAPI(MethodResource, Resource):
@use_kwargs(AwesomeRequestSchema)
@marshal_with(AwesomeRequestSchema, code=200, description='Something created')
def post(self):
"""
POST
"""
try:
schema = AwesomeRequestSchema()
data = schema.load(request.json)
print(data.api_type)
return request.json
except ValidationError as err:
return err.messages

api.add_resource(AwesomeAPI, '/')
docs.register(AwesomeAPI)
if __name__ == '__main__':
app.run(debug=True)

谢谢！

Answer 1

我遇到了同样的问题。use_kwargs装饰器将尝试填充AwesomeRequestSchema对象并将其注入post((方法：https://flask-apispec.readthedocs.io/en/latest/api_reference.html#flask_apispec.annotations.use_kwargs

要修复，请更换

def post(self):

带有

def post(self, populated_request_object):