Generate Usernames

We’re needing to auto-generate random usernames at registration in the following form:
“E”+ dechex(time())

We’ve tried a few different approaches that haven’t worked yet:

— CB AutoAction that generates the username value before or after the registration form is displayed

— AutoAction that generated the username at registration save

— Code field used to generate and return the random value and then the field set as the username fallback. (in this attempt the username always set to the email, as if the code field was empty.)

Do the usernames absolutely have to be in that format? If not you can enable random username fallback in CB > Configuration > User Profile then remove the username field from registration display and it will randomly generate on on registration.

You're going to have a hard time trying to do this with CB Auto Actions as username needs to be set really early. Probably the only way would be to use onStartSaveUserRegistration trigger with a Code action and Method set to PHP then write the necessary PHP to set a username on the var1 variable which is the user object. Example as follows.

Global
Triggers: onStartSaveUserRegistration
Type: Code
User: Automatic
Access: Everybody
Action
Method: PHP
Code: Parameters
References: Variable 1

That should work for setting the username early enough.

Yes, we need that format because users are created in other integrated systems in that format.

I actually tried a CB Auto Action like the one you outline after finding a forum topic about using the same trigger to set a random email address.

I'm not sure if I was missing something, but I couldn't get it to work.

So there's no way to generate the string in a code field and have the code field be the fallback at registration?

Does my above example not work for you? My example assumes you aren't using the username field. If you are then the above won't work since the value in the fields input will be bound to the user object after that trigger.

So there's no way to generate the string in a code field and have the code field be the fallback at registration?

No, not at this time. The fallback works with raw values only so it only works with stored fields.

No, the CB Auto Action is not working. Instead, the username is stored as the fallback field, which I currently have set to email.

Also, to clarify, we do not have the username field displayed on the registration form so the user is not supplying a field value at registration.