Custom field not working as username fallback

Hey team,

I have a custom field in community builder which is essentially [firstname][lastname]@domain.com.

When I set this field as the username fallback, it does not work when registering and as a result the username defaults to the email that a user signed up with. If i set the username fallback to anything else, such as just firstname, it works properly.

Is there any way to set the username to this custom field ( [firstname][lastname]@domain.com ) upon registration? We are not asking for a username upon registration as we want to set it to this ourselves

Thanks!!

Edit: A little more info - after a user has registered, when I look at CB -> User Management -> User, the custom field does show up and it is correct with the format above. My main thought is that perhaps this field is set after registration - after the username fallback is already set, and that is why it works for a field such as firstname but not this custom field?
Again that's just a bit of rambling on what I think COULD be happening behind the scenes - any solutions or advice is much appreciated!

Cheers

You can not use a Custom HTML field for a username fallback. It needs to have storage so it could be a Text field for example.

Hi Kyle, thanks for that.

I attempted to repeat this but with a Text field rather than a custom email field and still could not get it working.

I've set all the value layouts of the text field to [firstname][lastname]@domain.com, and it appears correctly under user management. (The field is not visible on registration). The username fallback is set to this text field, however when creating a new account the username still defaults to the original email the user enters.

Is there something obvious I'm doing wrong here?

Thanks

As a side thought, I just learnt about CB auto actions - would it be possible to set the the custom username field on registration with this?

I've set all the value layouts of the text field to [firstname][lastname]@domain.com, and it appears correctly under user management. (The field is not visible on registration). The username fallback is set to this text field, however when creating a new account the username still defaults to the original email the user enters.

Is there something obvious I'm doing wrong here?

The text field actually needs a value. So if you set it to a text field that text field should be available during registration.

As a side thought, I just learnt about CB auto actions - would it be possible to set the the custom username field on registration with this?

Yes, CB Auto Actions can alter the username during the registration process.