From c0b8717c443436d724f4e0be9cfce725d8123df0 Mon Sep 17 00:00:00 2001
From: Thomas Lamprecht <t.lamprecht@proxmox.com>
Date: Mon, 13 May 2019 06:52:19 +0000
Subject: [PATCH] print api res: always allow result to be undef if optional
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If the return schema says that it's optionally returns something then
we want to allow returning nothing, i.e., undef

Co-developed-by: Dominic Jäger <d.jaeger@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
---
 src/PVE/CLIFormatter.pm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/PVE/CLIFormatter.pm b/src/PVE/CLIFormatter.pm
index e886db5..84dbed1 100644
--- a/src/PVE/CLIFormatter.pm
+++ b/src/PVE/CLIFormatter.pm
@@ -413,6 +413,7 @@ sub print_api_result {
 
     if ($result_schema && defined($result_schema->{type})) {
 	return if $result_schema->{type} eq 'null';
+	return if $result_schema->{optional} && !defined($data);
     } else {
 	my $type = $guess_type->($data);
 	$result_schema = { type => $type };
-- 
2.39.2