aws-amplify
How to enable username login and how to check whether username avaliable or not?
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Amplify CLI Version
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Hey @AsitDixit :wave: you can use username as a login mechanism by selecting username when creating the auth resource with amplify add auth (https://docs.amplify.aws/cli/auth/overview/)
Can you clarify the second question? Are you looking to validate whether username was selected when you previously created an auth resource?
@josefaidt Yes I want to run query whether user name is available or not and that username you said is immutable basically I am asking about preferred_username
Hey @AsitDixit apologies for the delay here, are you looking to have unique preferred_username attributes? This approach may create an additional attack vector for your app. We can also leverage a pre-signup trigger that uses the AWS SDK to call Cognito and see if this preferred_username is available
- https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/CognitoIdentity.html
- https://docs.aws.amazon.com/cognito-user-identity-pools/latest/APIReference/Welcome.html
Hey @AsitDixit just wanted to follow-up on this one and see if you're still experiencing this issue?