+sub last_used_ap_chart {
+ my ($self) = @_;
+
+ my $query = <<EOSQL;
+ SELECT c.id
+ FROM chart c
+ JOIN acc_trans ac ON (ac.chart_id = c.id)
+ JOIN ap a ON (a.id = ac.trans_id)
+ WHERE (a.vendor_id = ?)
+ AND (c.category = 'E')
+ AND (c.link !~ '_(paid|tax)')
+ AND (a.id IN (SELECT max(a2.id) FROM ap a2 WHERE a2.vendor_id = ?))
+ ORDER BY ac.acc_trans_id ASC
+ LIMIT 1
+EOSQL
+
+ my ($chart_id) = SL::DBUtils::selectfirst_array_query($::form, $self->db->dbh, $query, ($self->id) x 2);
+
+ return if !$chart_id;
+ return SL::DB::Chart->load_cached($chart_id);
+}
+