From: Moritz Bunkus <m.bunkus@linet-services.de>
Date: Mon, 1 Nov 2010 17:37:48 +0000 (+0100)
Subject: Hilfsroutinen zum Umrechnen zwischen Einheiten
X-Git-Tag: release-2.6.3~61^2~7^2~1^2~2^2~34
X-Git-Url: http://wagnertech.de/git?a=commitdiff_plain;h=65bc835d4495503a806c9cbe322b3d6725af0abd;p=kivitendo-erp.git

Hilfsroutinen zum Umrechnen zwischen Einheiten
---

diff --git a/SL/DB/Unit.pm b/SL/DB/Unit.pm
index 6a197337c..55a190b24 100644
--- a/SL/DB/Unit.pm
+++ b/SL/DB/Unit.pm
@@ -38,4 +38,23 @@ sub convertible_units {
   ];
 }
 
+sub base_factor {
+  my ($self) = @_;
+
+  if (!defined $self->{__base_factor}) {
+    $self->{__base_factor} = !$self->base_unit || !$self->factor || ($self->name eq $self->base_unit) ? 1 : $self->factor * $self->base->base_factor;
+  }
+
+  return $self->{__base_factor};
+}
+
+sub convert_to {
+  my ($self, $qty, $other_unit) = @_;
+
+  my $my_base_factor    = $self->base_factor       || 1;
+  my $other_base_factor = $other_unit->base_factor || 1;
+
+  return $qty * $my_base_factor / $other_base_factor;
+}
+
 1;