Oauth2 and PKCE redirect url for mobile apps

Question

I am creating a mobile app and use Spring boot, Keycloak and Fluter for that. And I am struggeling to figure out what/ how should I set the redirect url when I choose public access type and open id in Keycloak.

For a web app I understand that because I give the server url but how about a mobile application?

Answer 1

Use URL which your app can claim on the device. Random post about this topic: https://www.oauth.com/oauth2-servers/redirect-uris/redirect-uris-native-apps/

Answer 2

You need to extract the month from date and extract the date from string first , example:

 month: {$month: { $dateFromString:{ dateString:"$project.date" , timezone:'America/New_York' }} }

or extract the month like number ( 01..12) from the string:

    month: {  $substr: ["$project.date", 5, 7]     }