prevent bug causing 'Error crediting customer for service remaining: FS::cust_pkg...

[freeside.git] / FS / FS / cust_main.pm

diff --git a/FS/FS/cust_main.pm b/FS/FS/cust_main.pm
index 44fb8d6..60556a5 100644 (file)
--- a/FS/FS/cust_main.pm
+++ b/FS/FS/cust_main.pm
@@ -1343,7 +1343,7 @@ sub bill {
                   || $tax->recurtax =~ /^Y$/i;
             next unless $taxable_charged;
 
-            if ( $tax->exempt_amount > 0 ) {
+            if ( $tax->exempt_amount && $tax->exempt_amount > 0 ) {
               my ($mon,$year) = (localtime($sdate) )[4,5];
               $mon++;
               my $freq = $part_pkg->freq || 1;
@@ -2659,6 +2659,19 @@ sub referral_cust_pkg {
       $self->referral_cust_main($depth);
 }
 
+=item referring_cust_main
+
+Returns the single cust_main record for the customer who referred this customer
+(referral_custnum), or false.
+
+=cut
+
+sub referring_cust_main {
+  my $self = shift;
+  return '' unless $self->referral_custnum;
+  qsearchs('cust_main', { 'custnum' => $self->referral_custnum } );
+}
+
 =item credit AMOUNT, REASON
 
 Applies a credit to this customer.  If there is an error, returns the error,