Instagram API: force prompt during authentication
api, instagram, oauth
Solution
I believe that the most simple way is to use next url:
https://instagram.com/accounts/logoutin/?force_classic_login=&next=URLENCODED_INSTAGRAM_OAUTH_URI_PATH_WITH_YOUR_DATA
For example:
window.location.assign('https://instagram.com/accounts/logoutin/?force_classic_login=&next=' + encodeURIComponent('/oauth/authorize/?response_type=code&scope=public_content+follower_list+comments&client_id='+ YOUR_IG_CLIENT_ID + '&redirect_uri='+encodeURIComponent(YOUR_REDIRECT_URI)));
Please take a note that your redirect uri should be encoded twice
Problem
Is there a way for the instagram auth(login) to always ask for authentication? This is skipped when the user is logged in and has already authorized the app. It would be something like twitter's `use_authorize=true` or google's `approval_prompt=force`.