I’m new to Trello REST API development and I’d appreciate guidance with my problem.
I’m trying to get token using 1/authorize route with postMessage callback and it’s not working as expected.
Url that I use:
After successful login and authorization browser gets redirected to
https://trello.com/1/token/approve, however no message is received at the endpoint (local azure function with ngrok tunelling).
Return url works fine when using callback_method=fragment.
Why usage of callback_method=postMessage doesn’t result in message getting sent to endpoint in this case?
Thank you for help,