Fixed validation issue in Donation asset.

docs/changelog/7.x.x.txt

@@ -19,7 +19,8 @@
  - added Survey now has a loading mask on Survey edit ajax calls.
  - fixed: Sliders fixed.  Improved algorithm for determining pixel step size.
  - rfe #9355: Password Recovery email subject (SDH Consulting Group)
- - added: Users can now set a minimum cart amount required for checkout. (Martin Kamerbeek / Oqapi )
+ - added: Users can now set a minimum cart amount required for checkout. ( Martin Kamerbeek / Oqapi )
+ - fixed validation issue in the donation asset ( Martin kamerbeek / Oqapi )
 
 7.6.14
  - fixed: IE6 shows Admin Bar over Asset Manager

lib/WebGUI/Asset/Sku/Donation.pm

@@ -169,11 +169,15 @@ Accepts the information from the donation form and adds it to the cart.
 =cut
 
 sub www_donate {
-    my $self = shift;
-    if ($self->canView) {
+    my $self    = shift;
+    my $price   = $self->session->form->get("price") || $self->getPrice;
+
+    if ($self->canView && $price > 0) {
         $self->{_hasAddedToCart} = 1;
+        my $price = 
         $self->addToCart({price => ($self->session->form->get("price") || $self->getPrice) });
     }
+
     return $self->www_view;
 }