无论请求的mime类型如何，如何强制flask-restful应用将帖子主体解释为json

Question

I have a python flask-restful app which receives json in the post body. Here the two minimal files app.py and info.py :

The application module app.py :

from flask import Flask
from flask_restful import Resource, Api, reqparse

flaskApp = Flask(__name__)
api = Api(flaskApp)

from endpoints.info import Info

api.add_resource(Infp, '/v1/info')

The endpoint module info.py (in subfolder endpoints ):

from flask_restful import Resource, reqparse

myParser = reqparse.RequestParser()
reqparse.RequestParser.
myParser.add_argument('argA', location='json')
myParser.add_argument('argB', location='json')


class Info(Resource):

    def post(self):
        args = myParser.parse_args()
        return args

This app works correct when I send a request as mime type application/json :

curl  -s "http://127.0.0.1:5000/v1/info" -d '{"locality":"Barton"}' -H Content-Type:application/json

returns as expected:

{
    "locality": "Barton"
}

However the client will send the requests as the normal url-encoded mimetype . When I just do

curl  -s "http://127.0.0.1:5000/v1/info" -d '{"locality":"Barton"}'

the app returns {} So it did not interpret the body as intended.

How can I force the app to interpret the post body as json regardsless of the request's mime-type?

I know about this StackOverflow question ; it suggests using Request.get_json . But how can I access this method in the Resource class Info to feed it into myParser ?

Answer 1

According to the flask-restful docs , the location keyword argument of add_argument indicates a property of flask.Request from which to pull the argument.

According to the Flask docs , the json property will be empty if the mimetype of the request is not application/json .

But if you use Request.get_json(force=True) directly, you don't need the parser. You can just access the value:

from flask import request
class Info(Resource):
    def post(self):
        data = request.get_json(force=True)
        return data['locality']