Signup Account Restrictions

Create file amember/application/configs/site.php

PHP:

<?php
function checkSignup(Am_Event $event)
{
     $invoice = $event->getInvoice();
     $restrictedProducts = array(1,2,44);
     $found = 0;
     foreach ($invoite->getProducts() as $product)
           if (in_array($product->pk(), $restrictedProducts)) $found++;
     if (!$found) return; // no restricted products in invoice
     $user = $invoice->getUser();
     $user->email; // user email
     // a sample how to find a user, @see UserTable class
     Am_Di::getInstance()->userTable->findByEmail('email-address');
    Am_Di::getInstance()->userTable->findBy(array('login' => 'xxx', 'name_f'=>'Jon'));
    $user->getActiveProductIds(); // get product# of active subscriptions for user record @see User class
    // finally when conditions are not met, we can raise a not-loggable-exception
    throw new Am_Exception_InputError("You are not allowed to signup");
}

Am_Di::getInstance()->hook->add(Am_Event::INVOICE_CALCULATE, 'checkSignup');


Use this code to query products instead:

PHP:

     foreach ($invoice->getItems() as $item)
           if ($item->item_type == 'product' && in_array($item->item_id, $restrictedProducts)) $found++;


A customer informed us that the sample above does not work correctly if e-mail address verification is enabled.
So there is a new code sample attached.
Upload it to amember/application/default/plugins/misc/
then enable plugin at aMember Cp -> Setup -> Plugins : Misc : custom-email-validation-brick
then go to aMember Cp -> Form Editor, remove E-Mail brick from the form, and insert "Email Validated" brick instead. You have to customize validation rule, of course!