[eluser]ericbae[/eluser]
Currently, Tank Auth is configured to accept both "username" and "email" in its registration. But when you use Facebook, Twitter or Google, you don't provide any of these.
So at the moment, I am redirecting to a page where users can set these values.
Of course, you can set these values yourself, by automatically making up their username (e.g. get their first name and last name and append them together) or get their email address (e.g. this is more sensitive since you'll need a separate permission on FB to get the user to give you their email address).
But the caveat is that Tank Auth requires your user name and email to be unique so they can be used as a login ID (which makes sense).
So rather than trying to figure ALL the above by yourself (and probably make some assumptions along the way), the easiest method was to put another page where users can fill in extra details.
In my case, I've used this "Extra step" so that users can fill in more details like "country", "website", "gender" etc etc.
Hope that meaks sense.
