X-Git-Url: http://wagnertech.de/git?a=blobdiff_plain;f=SL%2FRecordLinks.pm;h=6229cfe43389dcb1bdfefa8f053973e780148b45;hb=90daea72226506cd9f797ba2bfd7d3c39e19fe3e;hp=d421714157e085920695c4bef4e371131332fc3c;hpb=c42d0a36ebb2ff30748328f9d6380bb5f70ef77a;p=kivitendo-erp.git

diff --git a/SL/RecordLinks.pm b/SL/RecordLinks.pm
index d42171415..6229cfe43 100644
--- a/SL/RecordLinks.pm
+++ b/SL/RecordLinks.pm
@@ -2,6 +2,8 @@ package RecordLinks;
 
 use SL::Common;
 use SL::DBUtils;
+use Data::Dumper;
+use List::Util qw(reduce);
 
 sub create_links {
   $main::lxdebug->enter_sub();
@@ -109,4 +111,63 @@ sub get_links {
   return wantarray ? @{ $links } : $links;
 }
 
+sub get_links_via {
+  $main::lxdebug->enter_sub();
+
+  use SL::MoreCommon;
+  use Data::Dumper;
+
+  my $self     = shift;
+  my %params   = @_;
+
+  Common::check_params(\%params, [ qw(from_table from_id to_table to_id) ]);
+  Common::check_params(\%params, "via");
+
+  my @hops = ref $params{via} eq 'ARRAY'
+           ? @{ $params{via} }
+           :    $params{via};
+  unshift @hops, +{ table => $params{from_table}, id => $params{from_id} };
+  push    @hops, +{ table => $params{to_table},   id => $params{to_id} };
+
+  my $myconfig   = \%main::myconfig;
+  my $form       = $main::form;
+
+  my $last_hop   = shift @hops;
+  my @links;
+  for my $hop (@hops) {
+
+    my @temp_links = $self->get_links(
+      from_table => $last_hop->{table},
+      from_id    => $last_hop->{id},
+      to_table   => $hop->{table},
+      to_id      => $hop->{id},
+    );
+
+    # short circuit if any of these are empty
+    return wantarray ? () : [] unless scalar @temp_links;
+
+    push @links, \@temp_links;
+    $last_hop  =  $hop;
+  }
+
+  my $result = reduce {
+    [
+      grep { $_ }
+      cross {
+        if (   $a->{to_table} eq $b->{from_table}
+            && $a->{to_id}    eq $b->{from_id} ) {
+          +{ from_table => $a->{from_table},
+             from_id    => $a->{from_id},
+             to_table   => $b->{to_table},
+             to_id      => $b->{to_id} }
+          }
+        } @{ $a }, @{ $b }
+    ]
+  } @links;
+
+  $main::lxdebug->leave_sub();
+
+  return wantarray ? @{ $result } : $result;
+}
+
 1;