Referred by in the registration form.

well until there is an option in the module for this - i added the following code to do what i think you are looking for.

I did this for 2 reasons - my client requested this sort of interface; plus i use rolesignup and registerprofile modules which don't work with the referral link approach

in case it isn't obvious you need to add this to a module such as example.module

/**
*   Implement hook_form_alter
* 
**/
function example_form_alter($form_id, &$form) {
       
    switch ($form_id) { 
        case 'user_register':
            $form['referral'] = array(
                    '#type' => 'textfield', 
                    '#title' => t('Referral'), 
                    //'#default_value' => $node->body, 
                    '#description' => t('If you were referred to our site by an existing member, you may enter either
                    their username on this site or the email address which they have on file with us.'),
                    '#required' => false);
            
            break;
       }
}


/**
* Implementation of hook_user
*/
function example_user($op, &$edit, &$account, $category = NULL) {
    switch ($op) {
        case 'validate':
            global $form_values;
            if (isset($form_values['referral'])) {
                // did they enter an email address or username?
                if (valid_email_address($form_values['referral'])) $check = array('mail'=>$form_values['referral']);
                else $check = array('name'=>$form_values['referral']);
                // and is it in the db
                if (!user_load($check)) form_set_error('referral',"the email address or username that you have entered does not belong to a member of 
                our site");
            }
            break;
                        
        case 'insert':
            global $form_values;
            // need to do same checks now as we did to validate - except that we will know the member is valid
            if (isset($form_values['referral'])) {
                // did they enter an email address or username?
                if (valid_email_address($form_values['referral'])) $check = array('mail'=>$form_values['referral']);
                else $check = array('name'=>$form_values['referral']);
                // and is it in the db
                $member = user_load($check);
                create_referral($member->uid, $account->uid);          // insert the referral into referals table
            }
            break;  
    }
}

// insert a new entry in referrals table if someone enters a referrer when they register
//      - $old_member is uid of referring member (existing member) 
//      - $new_member is uid of regsitering member 
function create_referral ($old_member, $new_member) {
    // create an entry in the referral table
    $ts = time();  
    $host = $_SERVER['REMOTE_ADDR'];  // doesn't really mean anything
    db_query("insert into referral (uid, referral_uid, created, flag, host, http_referer)
         values ($new_member, $old_member, $ts, 0, '$host', '')");
         
    //plus lets add the points for being referred
    if (module_exist('userpoints')) {
        $points = variable_get(REFERRAL_USERPOINTS, 1);
        userpoints_userpointsapi('points', $points, $old_member, 'referral');
    }
}

hope this helps.

Peter Lindstrom
LiquidCMS - Content Management Solution Experts

You could do this with the drupal module "Profile". It allows to add several user/admin-defined forms to the registration process. also it makes it possible to add things like gender, title or whatever to profiles, public or private.
regards

http://drupal.org/handbook/modules/profile

ok, but i don't think you understand what this is doing.. or what the original posted asked for.

The field i added does not store any data to the database - it is simply a field to ask for a username (or email) so that it can add entries into the referral table used by the referral module.

Just adding a field with profile module doesn't do anything for me other than add a piece of info to db which i don't need for anything.

does it work on 5.1?

Hi enxox,

I got your email and NO i havent done this for D5 hey. But have you tried it - it might work as is?

You nede to make a module - my code assumes it is called example.module.. basically just add the code into a file called modules/example/example.module

For Drupal 5 you iwll also need an .info file - but they are pretty small simple files - loko at any of the ones in std Drupal install copy it over to modules/example/example.info and edit a couple lines it.

Can't say it will work for sure as i havent done much Dr 5 work yet... but my code is not too complex so it may work as is.

Peter Lindstrom
LiquidCMS - Content Management Solution Experts

Hello Peter,

I just gave it a shot, but ran into this error when registering (with a referred userid entered on the user register page):

Fatal error: Call to undefined function module_exist() in /var/www/modules/referralid/referralid.module on line 64

Any idea why the userpoints part of this code isn't working with Drupal 5?? UserPoints latest version is installed...

'if (module_exist('userpoints')) {'

Regards

If you are using 5.x, then it is module_exists() with an S.

Thanks again kbahey, that fixed my error, and the referee is properly informed that the referrer will receive x number of points.

The above code is working on my Drupal 5.1 instance. Please consider including this functionality in the User Referral module, but of course it needs a lot more testing...

If you (or someone) merges it into the latest 5.x version of referral, and create a patch, I will include it.

This version of User Referral is not supported anymore. The issue is closed for this reason.
Please upgrade to a supported version and feel free to reopen the issue on the new version if applicable.

This issue has been automagically closed by a script.