Merge branch...

Merge branch '6249-feat-core-display-epochdays-attributes-as-human-readable-date-in-columns-added-to-the' into '1.4-dev'

Resolve " feat(core): display EpochDays attributes as human readable date in columns added to the management inteface"

Closes #6249

See merge request fusiondirectory/fd!1028

include/management/columns/class_EpochDaysColumn.inc

+<?php
+/*
+  This code is part of FusionDirectory (http://www.fusiondirectory.org/)
+
+  Copyright (C) 2018-2023  FusionDirectory
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
+*/
+
+/*!
+* \brief Column rendering EpochDays attributes
+*/
+class EpochDaysColumn extends LinkColumn
+{
+  protected $type = 'integer';
+
+  protected function renderSingleValue (ListingEntry $entry, string $value): string
+  {
+    if (!empty($value)) {
+      // Multiply epoch day received as value by numbers of seconds in a day.
+      $epochInSeconds = (int) $value * 86400;
+      // casting is required for DateTime; It expects string.
+      $value = (string) $epochInSeconds;
+      $dateObject = DateTime::createFromFormat('U', $value, new DateTimeZone('UTC'));
+      if (is_object($dateObject)) {
+        return $this->renderLink($entry, $dateObject->format('d.m.Y'));
+      }
+    }
+    return '&nbsp;';
+  }
+}