[SOLVED] How do I access the group for a Cognito User account?

How do I access the group for a Cognito User account?

In AWS Cognito, you can add a user to a group (after first creating a group). A user may belong to one or more groups.

With using the JavaScript SDK (https://github.com/aws/amazon-cognito-identity-js), is there a way to read the assigned Groups? Would aws-sdk provide access over amazon-cognito-identity-js?

Solution

If you just need the Cognito UserPools Groups the Authenticated User is a member of, instead of making a separate API call, that data is encoded in the idToken.jwtToken that you received when authenticating.

This is useful for client-side rendering/access decisions in angular/react/etc. apps.

See the "cognito:groups" array claim in this example decoded idToken.jwtToken:

{
  "sub": "a18626f5-a011-454a-b4c2-6969b3155c24",
  "cognito:groups": [
    "uw-app-administrator",
    "uw-app-user"
  ],
  "email_verified": true,
  "iss": "https://cognito-idp.<region>.amazonaws.com/<user-pool-id>",
  "cognito:username": "<my-user-name>",
  "given_name": "<my-first-name>",
  "aud": "<audience-code>",
  "token_use": "id",
  "auth_time": 1493918449,
  "nickname": "Bubbles",
  "exp": 1493922049,
  "iat": 1493918449,
  "email": "<my-email>"
}

Hope this helps.