Python Flask redirection not working if the url has /#/ in it

Question

I'm new to Python and Flask, i need redirect along with arbitrary or full url, its working fine with the blow code.

but if the url has '/#/' in it then its not working, users are bookmarked these urls and i need to redirect to new domain as part of migration.

Example:

user url: http://127.0.0.1:5000/abc1/cba2/#/yyyy/2001
URL to be redirected: http://168.192.0.12:5000/abc1/cba2/#/yyyy/2001

Its not working since the there is # sign, Flask captures url only till # sign [/abc1/cba2/], because of this the redirection fails

How do i resolve this issue?

from flask import Flask, redirect
import json

def create_app():
    app = Flask(__name__)

    @app.route('/', defaults={'arbitrary': ''}, methods=['GET'])
    @app.route('/<path:arbitrary>')
    def red(arbitrary):
        print (arbitrary)
        url_substring = "/yyyy/"
        if url_substring in arbitrary:
            new_path = 'https://xxxx.com/' + arbitrary
            print (new_path)
            return redirect(new_path, code=302)
        else: 
            return redirect("https://xxxx.com", code=302)

I provided it above ex: http://127.0.0.1:5000/abc1/cba2/#/yyyy/2001 — user2111433, Jan 28 '21 at 07:53
you can add this as answer of this question with brief description how you did it. — avijit, Feb 05 '21 at 17:37

score 1 · Answer 1 · answered Jan 28 '21 at 20:58

According to http specification, content after # sign can be accessed only by client. In your situation, you can read the omitted part after loading a sample page which sends ajax request with the omitted content after # from client side.

Please see here for reference. https://stackoverflow.com/a/9384407/4374376

score 0 · Answer 2 · answered Jan 28 '21 at 06:16

0

Are you aware of what the # sign means in a URL?

If you must include it then you have to escape the sign.

URL should be: http://127.0.0.1:5000/abc1/cba2/%23/yyyy/2001

%23 represents the # sign.

answered Jan 28 '21 at 06:16

Nerveless_child

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Thanks for the reply, I am aware of the # sign in the url, but the users are bookmarked these URL's and i need redirect to the new host as part of migration, Is there any way to do that in Python? – user2111433 Jan 28 '21 at 06:47
When you say *it's not working fine* what do you mean? – Nerveless_child Jan 28 '21 at 07:49
When the url has '/#/' in it its not working ex: http://127.0.0.1:5000/abc1/cba2/#/yyyy/2001 – user2111433 Jan 28 '21 at 08:57

score 0 · Accepted Answer · answered Feb 12 '21 at 14:11

Fragment Url's [whatever after #] will not be sent to server side, so JS is the only option, I have used NodeJS [Server side] and JS for this.

Once the customer click's the bookmarked URL it will reach to NodeJS from there it will be routed to the HTML page which got the JS to get the fragment URL and redirect accordingly.

The below JS will get the Fragment URL

var urlAddress = document.URL.substr(document.URL.indexOf('#')+1);

Python Flask redirection not working if the url has /#/ in it

3 Answers3