modules/uc_free_order/uc_free_order.module

<?php
// $Id$

/**
 * Adds a payment method to handle free orders.
 *
 * The groundwork for this module in core and an initial implementation were
 * made possible by Warner Bros. Records.
 */


/**
 * Implementation of hook_perm().
 */
function uc_free_order_perm() {
  return array('test free order');
}

/**
 * Implementation of hook_form_alter().
 */
function uc_free_order_form_alter($form_id, &$form) {
  global $user;

  // Alter the checkout form to prepare it for our special JS.
  if ($form_id == 'uc_cart_checkout_form' && isset($form['panes']['payment'])) {
    if (user_access('test free order')) {
      drupal_set_message('Test free order: <span style="cursor: pointer;" onclick="alert(\'Discount added.\'); set_line_item(\'fo_discount\', \'Test Discount\', -2000, 0);">Add discount</span> | <span style="cursor: pointer;" onclick="alert(\'Discount removed.\'); remove_line_item(\'fo_discount\');">Remove discount</span>');
    }

    drupal_add_js(drupal_get_path('module', 'uc_free_order') .'/uc_free_order.js');

    $set = FALSE;
    foreach (array_keys($form['panes']['payment']['payment_method']['#options']) as $key) {
      if ($key !== 'free_order' && !$set) {
        drupal_add_js("uc_free_order_next_method = '". $key ."';", 'inline');
        $set = TRUE;
      }
    }
  }
  elseif ($form_id == 'uc_cart_checkout_review_form') {
    $order = uc_order_load($_SESSION['cart_order']);

    if ($order->payment_method == 'free_order') {
      if ($order->order_total >= .01) {
        drupal_set_message(t('We cannot process your order without payment.'), 'error');
        drupal_goto('cart/checkout');
      }
    }
  }
}

/**
 * Implementation of hook_payment_method().
 */
function uc_free_order_payment_method() {
  $methods[] = array(
    'id' => 'free_order',
    'name' => t('Free order'),
    'title' => t('Free order - payment not necessary.'),
    'desc' => t('Allow customers with $0 order totals to checkout without paying.'),
    'callback' => 'uc_payment_method_free_order',
    'checkout' => TRUE,
    'no_gateway' => TRUE,
    'weight' => 10,
  );

  return $methods;
}

// Handles the free order payment method.
function uc_payment_method_free_order($op, &$arg1) {
  switch ($op) {
    case 'cart-details':
      return t('Continue with checkout to complete your free order.');

    /**
     * Commented out this section b/c it wasn't firing in order.  I've moved
     * this logic to hook_form_alter() on the review form instead.  Keeping this
     * here in case I need to revisit this code. -RS
     */

    /* case 'cart-process':
      if ($arg1->payment_method == 'free_order') {
        // Load the customer's gift card balance.
        if ($arg1->order_total >= .01) {
          drupal_set_message(t('We cannot process your order without payment.'), 'error');
          return FALSE;
        }
      }
      return TRUE;*/
  }
}

1	<?php
2	// $Id$
3
4	/**
5	* Adds a payment method to handle free orders.
6	*
7	* The groundwork for this module in core and an initial implementation were
8	* made possible by Warner Bros. Records.
9	*/
10
11
12	/**
13	* Implementation of hook_perm().
14	*/
15	function uc_free_order_perm() {
16	return array('test free order');
17	}
18
19	/**
20	* Implementation of hook_form_alter().
21	*/
22	function uc_free_order_form_alter($form_id, &$form) {
23	global $user;
24
25	// Alter the checkout form to prepare it for our special JS.
26	if ($form_id == 'uc_cart_checkout_form' && isset($form['panes']['payment'])) {
27	if (user_access('test free order')) {
28	drupal_set_message('Test free order: <span style="cursor: pointer;" onclick="alert(\'Discount added.\'); set_line_item(\'fo_discount\', \'Test Discount\', -2000, 0);">Add discount</span> \| <span style="cursor: pointer;" onclick="alert(\'Discount removed.\'); remove_line_item(\'fo_discount\');">Remove discount</span>');
29	}
30
31	drupal_add_js(drupal_get_path('module', 'uc_free_order') .'/uc_free_order.js');
32
33	$set = FALSE;
34	foreach (array_keys($form['panes']['payment']['payment_method']['#options']) as $key) {
35	if ($key !== 'free_order' && !$set) {
36	drupal_add_js("uc_free_order_next_method = '". $key ."';", 'inline');
37	$set = TRUE;
38	}
39	}
40	}
41	elseif ($form_id == 'uc_cart_checkout_review_form') {
42	$order = uc_order_load($_SESSION['cart_order']);
43
44	if ($order->payment_method == 'free_order') {
45	if ($order->order_total >= .01) {
46	drupal_set_message(t('We cannot process your order without payment.'), 'error');
47	drupal_goto('cart/checkout');
48	}
49	}
50	}
51	}
52
53	/**
54	* Implementation of hook_payment_method().
55	*/
56	function uc_free_order_payment_method() {
57	$methods[] = array(
58	'id' => 'free_order',
59	'name' => t('Free order'),
60	'title' => t('Free order - payment not necessary.'),
61	'desc' => t('Allow customers with $0 order totals to checkout without paying.'),
62	'callback' => 'uc_payment_method_free_order',
63	'checkout' => TRUE,
64	'no_gateway' => TRUE,
65	'weight' => 10,
66	);
67
68	return $methods;
69	}
70
71	// Handles the free order payment method.
72	function uc_payment_method_free_order($op, &$arg1) {
73	switch ($op) {
74	case 'cart-details':
75	return t('Continue with checkout to complete your free order.');
76
77	/**
78	* Commented out this section b/c it wasn't firing in order. I've moved
79	* this logic to hook_form_alter() on the review form instead. Keeping this
80	* here in case I need to revisit this code. -RS
81	*/
82
83	/* case 'cart-process':
84	if ($arg1->payment_method == 'free_order') {
85	// Load the customer's gift card balance.
86	if ($arg1->order_total >= .01) {
87	drupal_set_message(t('We cannot process your order without payment.'), 'error');
88	return FALSE;
89	}
90	}
91	return TRUE;*/
92	}
93	}
94