Added Doctrine Entities.

src/Entity/DevicePart.php

@@ -0,0 +1,42 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: janhb
+ * Date: 23.02.2019
+ * Time: 18:55
+ */
+
+namespace App\Entity;
+
+
+use Doctrine\ORM\Mapping as ORM;
+
+/**
+ * Class DevicePart
+ * @package App\Entity
+ *
+ * @ORM\Table("device_parts")
+ * @ORM\Entity()
+ */
+class DevicePart extends DBElement
+{
+    /**
+     * @var Device
+     * @ORM\ManyToOne(targetEntity="Device", inversedBy="parts")
+     * @ORM\JoinColumn(name="id_device", referencedColumnName="id")
+     */
+    protected $device;
+
+    //TODO
+    protected $part;
+
+    /**
+     * Returns the ID as an string, defined by the element class.
+     * This should have a form like P000014, for a part with ID 14.
+     * @return string The ID as a string;
+     */
+    public function getIDString(): string
+    {
+        return 'DP' . sprintf('%06d', $this->getID());
+    }
+}