Added an basic table to show log entries.

src/DataTables/Column/LogEntryTargetColumn.php

@@ -0,0 +1,104 @@
+<?php
+/**
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ * Copyright (C) 2019 - 2020 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\DataTables\Column;
+
+use App\Entity\Base\DBElement;
+use App\Entity\Base\NamedDBElement;
+use App\Entity\LogSystem\AbstractLogEntry;
+use App\Repository\LogEntryRepository;
+use App\Services\ElementTypeNameGenerator;
+use App\Services\EntityURLGenerator;
+use Doctrine\ORM\EntityManagerInterface;
+use Omines\DataTablesBundle\Column\AbstractColumn;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+use Symfony\Contracts\Translation\TranslatorInterface;
+
+class LogEntryTargetColumn extends AbstractColumn
+{
+
+    protected $em;
+    protected $entryRepository;
+    protected $entityURLGenerator;
+    protected $elementTypeNameGenerator;
+    protected $translator;
+
+    public function __construct(EntityManagerInterface $entityManager, EntityURLGenerator $entityURLGenerator,
+        ElementTypeNameGenerator $elementTypeNameGenerator, TranslatorInterface $translator)
+    {
+        $this->em = $entityManager;
+        $this->entryRepository = $entityManager->getRepository(AbstractLogEntry::class);
+
+        $this->entityURLGenerator = $entityURLGenerator;
+        $this->elementTypeNameGenerator = $elementTypeNameGenerator;
+        $this->translator = $translator;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function normalize($value)
+    {
+        return $value;
+    }
+
+    public function configureOptions(OptionsResolver $resolver)
+    {
+        parent::configureOptions($resolver);
+    }
+
+    public function render($value, $context)
+    {
+        /** @var AbstractLogEntry $context */
+        $target = $this->entryRepository->getTargetElement($context);
+
+        //The element is existing
+        if ($target instanceof NamedDBElement) {
+            return sprintf(
+                '<a href="%s">%s</a>',
+                $this->entityURLGenerator->infoURL($target),
+                $this->elementTypeNameGenerator->getTypeNameCombination($target, true)
+            );
+        }
+
+        //Target does not have a name
+        if ($target instanceof DBElement) {
+            return sprintf(
+                '<i>%s</i>: %s',
+                $this->elementTypeNameGenerator->getLocalizedTypeLabel($target),
+                $target->getID()
+            );
+        }
+
+        //Element was deleted
+        if ($target === null && $context->hasTarget()) {
+            return sprintf(
+                '<i>%s</i>: %s [%s]',
+                $this->elementTypeNameGenerator->getLocalizedTypeLabel($context->getTargetClass()),
+                $context->getTargetID(),
+                $this->translator->trans('log.target_deleted')
+            );
+        }
+
+        //Log is not associated with an element
+        return "";
+    }
+}