From 7eb7f570da831149f1f5d13062aa7de747a4ae23 Mon Sep 17 00:00:00 2001
From: Tomas Cohen Arazi <tomascohen@theke.io>
Date: Thu, 7 Oct 2021 15:28:40 -0300
Subject: [PATCH] Bug 29157: Date and Datetime attributes cannot be set NULL
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit

This patch makes Koha::Object->attribute_from_api allow setting
attributes the undef value. The original implementation passed the value
directly to dt_from_string, which made the attribute be set the current
date.

To test:
1. Apply the regression tests patch
2. Run:
   $ kshell
  k$ prove t/db_dependent/Koha/Object.t \
           t/db_dependent/api/v1/patrons.t
=> FAIL: Tests fail! Our code is buggy!
3. Apply this patch
4. Repeat 2
=> SUCCESS! Fix fixed this thing!
5. Sign off :-D

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Eric Phetteplace <phette23@gmail.com>

Signed-off-by: Joonas Kylmälä <joonas.kylmala@iki.fi>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
(cherry picked from commit 2b93696da19a8a155ee5230b245827c077f8e520)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
---
 Koha/Object.pm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Koha/Object.pm b/Koha/Object.pm
index 45f9c9ea4b..a001b833bb 100644
--- a/Koha/Object.pm
+++ b/Koha/Object.pm
@@ -709,7 +709,8 @@ sub attributes_from_api {
         }
         elsif ( _date_or_datetime_column_type( $columns_info->{$koha_field_name}->{data_type} ) ) {
             try {
-                $value = dt_from_string($value, 'rfc3339');
+                $value = dt_from_string($value, 'rfc3339')
+                    if defined $value;
             }
             catch {
                 Koha::Exceptions::BadParameter->throw( parameter => $key );
-- 
2.39.5