How to send POST request using flask.redirect?

Question

I'm trying to create a flask service in which I want to send the data coming from one request.form to another url in json format, Please can anyone help me to achieve this?

redirect(url_for('any_method'), json = json.dumps(my_form_dict))

When I try to execute the above code I'm getting following error:

TypeError: redirect() got an unexpected keyword argument 'json' The above is the error here.

Where's exactly the problem? You have already the solution, just pass `json=request.form` in the first route... — josepdecid, Feb 14 '19 at 13:08
No this is not the solution. While trying to run with that I'm getting the following error: TypeError: redirect() got an unexpected keyword argument 'json' — Mukunda M Mhasalkar, Feb 14 '19 at 13:13
Could you provide more information? What are your current results, what are you expecting? Any error message, some examples... — josepdecid, Feb 14 '19 at 13:14
TypeError: redirect() got an unexpected keyword argument 'json' The above is the error here.. — Mukunda M Mhasalkar, Feb 14 '19 at 13:16
Ok, just try to edit the question and add this details to make it more clear. — josepdecid, Feb 14 '19 at 13:18
Your question is not clear. Are you trying to redirect POST request itself? If yes - it is not possible to redirect POST requests. More info is [here](https://softwareengineering.stackexchange.com/questions/99894/why-doesnt-http-have-post-redirect). — Andrejs Cainikovs, Feb 14 '19 at 15:19
Thanks, @AndrejsCainikovs for clearing me, yes I was trying to send a POST redirect. Your comment cleared everything now.. — Mukunda M Mhasalkar, Feb 15 '19 at 04:17
Thanks for confirming. I have added my comment as an answer, and will add more info/links as soon as I find them. Please accept my answer. — Andrejs Cainikovs, Feb 15 '19 at 09:25

score 7 · Answer 1 · answered Feb 04 '20 at 17:52

7

You can redirect POST requests using 307 status code. Use:

redirect(url_for('any_method', json=json.dumps(my_form_dict)), code=307)

For more information refer to this answer: Make a POST request while redirecting in flask

answered Feb 04 '20 at 17:52

ReemRashwan

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Andrejs Cainikovs · Accepted Answer · 2019-02-15T09:53:41.970

4

It is not possible to redirect POST requests. More info is here.

edited Feb 15 '19 at 09:53

answered Feb 15 '19 at 09:24

Andrejs Cainikovs

27,428
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score 0 · Answer 3 · answered Feb 14 '19 at 13:21

0

Your problem is that you are passing too much arguments to the redirect function. It only expects three parameters, location, code, and Response. If you want to pass extra parameters, use the Flask url_for method:

redirect(url_for('any_method', json=form_json))

Note the difference, you were passing the url_for and extra fields as two parameters. In my version, I've added the extra fields in the url_for, so redirect only receives one parameter.

answered Feb 14 '19 at 13:21

josepdecid

1,737
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Did this answer solved your problem? If so, please vote and mark this answer as correct. – josepdecid Feb 14 '19 at 19:20
I have tried the above code also but flask's request.json is not working with the above step. I'm not getting the json in the request even after using above way – Mukunda M Mhasalkar Feb 15 '19 at 09:40
Take a look at the request object, maybe you're not sending it as a `form`, try to access `request.data` – josepdecid Feb 15 '19 at 09:43

score 0 · Answer 4 · answered Dec 31 '22 at 00:39

I used the requests package to redirect a GET request to the POST one.
The trick is using flask.make_response() to make a new Resposne object.
In my scenario, the last response is an HTML text, so I get text as a response.

from flask import request, make_response
import requests

@app.route('/login', methods=['GET'])
def login():
    data = {"data": request.args['data']}
    redirect_response = requests.post('https://my-api/login', json=data).text
    return make_response(redirect_response, 302)

How to send POST request using flask.redirect?

4 Answers4

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