Autogenerate Username

I simply want to generate 10 random digits as the username at the time of registration.

I know I can do this by using CB Auto Actions. By using a Code action on the 'before registration' trigger and altering the POST of username.

Can someone be so kind as to give me a the PHP code that will alter the POST of username to 10 randomly generated digits?

Thanks in advance.

Below topic is similar case to what you're wanting. You basically need to allow the username field on registration, set it as not required, then hide it using CSS. This allows its POST to be processed. You'd then use a code action and PHP to alter the post value on the before registration trigger. Please see the below for full example.

www.joomlapolis.com/forum/146-general/223448-joomla-2516-and-cb-191-issue?start=6#237232

Not sure if I should continue here or over on that post. In any case:

Exactly what I need, thanks.

2 questions:

1. How do I define the length of "uniqid"
2. Can I use CB Substitutions for pretext and posttext in order to add other fields that have been entered?

1. How do I define the length of "uniqid"

You can't, it has no such functionality. You can use substr to cut it short or look into other PHP methods for generating strings so you get a unique string at your exact desired length.

2. Can I use CB Substitutions for pretext and posttext in order to add other fields that have been entered?

Yes, all CB Auto Action types support substitutions. This includes substitutions inside of a Code action.

Ok, I'm no PHP expert here (so no laughing out loud). Will this work in generating a random string that is 6 digits long? (with a predefined pre-text and post-text.

I am assuming this will not ensure that it's a unique username?

That's 1 way to do it. Best I can suggest is try it and see what happens.