Pass custom data to paypal + registration?

I’m trying to create a customized affiliate program, and would like to do the following:

1. Pass custom data to the paypal button (an affiliate id for example… which I thought I’d pass through my pricing page url).

2. Get the data back when the users comes back from paypal and register their account, and pre-populate it to a custom hidden field in the registration form.

3. Have it permanently on the user’s profile (hidden) so I can always tell who referred that user.

Is this possible?

Hi Adam.

The button’s shortcode has the custom attribute, which you could use to pass that data through the checkout to use later in a hack or in a script with the Notifications API.
[hilite path]Dashboard -› s2Member® -› PayPal® Buttons -› Shortcode Attributes -> custom[/hilite]
[hilite path]Dashboard -› s2Member® -› API / Notifications[/hilite]

The value could be stored in the user’s profile, in the usermeta table. WordPress has some functions you could use for this. http://codex.wordpress.org/Function_Reference#User_and_Author_Functions

s2Member makes it easy to integrate with aff solutions like iDev Affiliate, although I’m not sure if that does all you want, you’d need to check with them. [hilite path]Dashboard -› s2Member® -› API / Tracking -› Integrating iDevAffiliate®[/hilite]

I hope that helps.