How to create a free shipping coupon in Ubercart

bump.

I modified the dev branch of uc_coupon to be able choose a coupon in the conditional actions. Also it fixes a minor bug which was preventing to look at coupon use reports. With the patch in place, now you can create a free shipping coupon using following steps:

1. Create a coupon let's say FREESHIP100 and make the discount to be 0.00 dollars and conditional upon 100 dollars or above.
2. Create a Flat rate shipping with 0.00 shipping cost and apply the conditions that amount is above 100 dollars and a coupon FREESHIP100 is applied.
This will automatically create a shipping choice when both minimum amount and coupon applied are met.

The only issue I see is that it does show a 0.00 dollar coupon discount in addition to free shipping. It is aminor annoyance, but the whole thing works. It is based upon the patch in Ubercart discount module (alt) patch.

diff -Naur uc_coupon-6.x-1.x-dev/uc_coupon.ca.inc uc_coupon/uc_coupon.ca.inc
--- uc_coupon-6.x-1.x-dev/uc_coupon.ca.inc	2010-12-06 14:28:06.000000000 -0600
+++ uc_coupon/uc_coupon.ca.inc	2010-12-06 14:30:42.000000000 -0600
@@ -47,7 +47,18 @@
  * Check if an order has a coupon applied.
  */
 function uc_coupon_condition_order_has_coupon($order, $settings) {
-  return isset($order->data['coupon']);
+ if (isset($_SESSION['uc_coupon'])) {
+	if (empty($settings['cid'])) {
+		return True;
+	}
+	$result = db_query("select * from uc_coupons where code = '" . $_SESSION[uc_coupon] . "'");
+	while ($coupon = db_fetch_object($result)) {
+		if (in_array($coupon->cid, $settings['cid'])) {
+			return True;
+		}
+	}
+ }
+ return False;
 }
 
 /**
@@ -56,3 +67,23 @@
 function uc_coupon_condition_is_bulk($coupon, $settings) {
   return $coupon->bulk;
 }
+
+function uc_coupon_condition_order_has_coupon_form($form_state, $settings = array()) {
+  $form = array();
+
+  $result = db_query('SELECT * FROM {uc_coupons} ORDER BY code');
+  while ($coupon = db_fetch_object($result)) {
+    $options[$coupon->cid] = $coupon->code;
+  }
+
+  $form['cid'] = array(
+    '#type' => 'select',
+    '#title' => t('Coupon'),
+    '#options' => $options,
+    '#multiple' => TRUE,
+    '#default_value' => $settings['cid'],
+    '#description' => t('Select the coupon which, if the user has successfuly applied them to their order, should trigger this condition.'),
+  );
+
+  return $form;
+}
\ No newline at end of file
diff -Naur uc_coupon-6.x-1.x-dev/uc_coupon.reports.inc uc_coupon/uc_coupon.reports.inc
--- uc_coupon-6.x-1.x-dev/uc_coupon.reports.inc	2010-12-06 14:28:07.000000000 -0600
+++ uc_coupon/uc_coupon.reports.inc	2010-12-06 05:56:56.000000000 -0600
@@ -4,6 +4,8 @@
 /**
  * Coupon report options form.
  */
+
+require_once 'uc_coupon.admin.inc';
 function uc_coupon_reports_form(&$form_state, $start = NULL, $end = NULL, $statuses = NULL) {
   if (is_null($start)) {
     $start = time();