Added database migration for new entities.

src/Entity/Base/TimestampTrait.php

@@ -0,0 +1,92 @@
+<?php
+/**
+ *
+ * part-db version 0.1
+ * Copyright (C) 2005 Christoph Lechner
+ * http://www.cl-projects.de/
+ *
+ * part-db version 0.2+
+ * Copyright (C) 2009 K. Jacobs and others (see authors.php)
+ * http://code.google.com/p/part-db/
+ *
+ * Part-DB Version 0.4+
+ * Copyright (C) 2016 - 2019 Jan Böhmer
+ * https://github.com/jbtronics
+ *
+ * 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 Street, Fifth Floor, Boston, MA  02110-1301, USA
+ *
+ */
+
+namespace App\Entity\Base;
+
+
+use Symfony\Component\Serializer\Annotation\Groups;
+
+/**
+ * A entity with these trait contains informations about, when it was created and edited last time
+ * @package App\Entity\Base
+ */
+trait TimestampTrait
+{
+    /**
+     * @var \DateTime The date when this element was modified the last time.
+     * @ORM\Column(type="datetimetz", name="last_modified")
+     * @Groups({"extended", "full"})
+     */
+    protected $lastModified;
+
+    /**
+     * @var \DateTime The date when this element was created.
+     * @ORM\Column(type="datetimetz", name="datetime_added")
+     * @Groups({"extended", "full"})
+     */
+    protected $addedDate;
+
+    /**
+     * Returns the last time when the element was modified.
+     * Returns null if the element was not yet saved to DB yet.
+     *
+     * @return \DateTime|null The time of the last edit.
+     */
+    public function getLastModified(): ?\DateTime
+    {
+        return $this->lastModified;
+    }
+
+    /**
+     * Returns the date/time when the element was created.
+     * Returns null if the element was not yet saved to DB yet.
+     *
+     * @return \DateTime|null The creation time of the part.
+     */
+    public function getAddedDate(): ?\DateTime
+    {
+        return $this->addedDate;
+    }
+
+    /**
+     * Helper for updating the timestamp. It is automatically called by doctrine before persisting.
+     *
+     * @ORM\PrePersist
+     * @ORM\PreUpdate
+     */
+    public function updatedTimestamps(): void
+    {
+        $this->lastModified = new \DateTime('now');
+        if (null === $this->addedDate) {
+            $this->addedDate = new \DateTime('now');
+        }
+    }
+}