Show the creating or last editing user in part or structure info.

src/Entity/LogSystem/AbstractLogEntry.php

@@ -129,7 +129,7 @@ abstract class AbstractLogEntry extends AbstractDBElement
     ];
 
     /** @var User The user which has caused this log entry
-     * @ORM\ManyToOne(targetEntity="App\Entity\UserSystem\User")
+     * @ORM\ManyToOne(targetEntity="App\Entity\UserSystem\User", fetch="EAGER")
      * @ORM\JoinColumn(name="id_user", nullable=false)
      */
     protected $user;

src/Repository/LogEntryRepository.php

@@ -26,7 +26,11 @@ namespace App\Repository;
 
 use App\Entity\Base\AbstractDBElement;
 use App\Entity\LogSystem\AbstractLogEntry;
+use App\Entity\LogSystem\ElementCreatedLogEntry;
+use App\Entity\LogSystem\ElementEditedLogEntry;
+use App\Entity\UserSystem\User;
 use Doctrine\ORM\EntityRepository;
+use Doctrine\ORM\QueryBuilder;
 
 class LogEntryRepository extends EntityRepository
 {
@@ -34,8 +38,9 @@ class LogEntryRepository extends EntityRepository
     {
         //Emulate a target element criteria by splitting it manually in the needed criterias
         if (isset($criteria['target']) && $criteria['target'] instanceof AbstractDBElement) {
+            /** @var AbstractDBElement $element */
             $element = $criteria['target'];
-            $criteria['target_id'] = $element;
+            $criteria['target_id'] = $element->getID();
             $criteria['target_type'] = AbstractLogEntry::targetTypeClassToID(get_class($element));
             unset($criteria['target']);
         }
@@ -93,4 +98,49 @@ class LogEntryRepository extends EntityRepository
 
         return $this->getEntityManager()->find($class, $id);
     }
+
+    protected function getLastUser(AbstractDBElement $element, string $class)
+    {
+        $qb = $this->createQueryBuilder('log');
+        $qb->select('log')
+            //->where('log INSTANCE OF App\Entity\LogSystem\ElementEditedLogEntry')
+            ->where('log INSTANCE OF ' . $class)
+            ->andWhere('log.target_type = :target_type')
+            ->andWhere('log.target_id = :target_id')
+            ->orderBy('log.timestamp', 'DESC');
+
+        $qb->setParameters([
+                               'target_type' => AbstractLogEntry::targetTypeClassToID(get_class($element)),
+                               'target_id' => $element->getID()
+                           ]);
+
+        $query = $qb->getQuery();
+        $query->setMaxResults(1);
+        /** @var AbstractLogEntry[] $results */
+        $results = $query->execute();
+        if (isset($results[0])) {
+            return $results[0]->getUser();
+        }
+        return null;
+    }
+
+    /**
+     * Returns the last user that has edited the given element.
+     * @param  AbstractDBElement  $element
+     * @return User|null A user object, or null if no user could be determined.
+     */
+    public function getLastEditingUser(AbstractDBElement $element): ?User
+    {
+        return $this->getLastUser($element, ElementEditedLogEntry::class);
+    }
+
+    /**
+     * Returns the user that has created the given element.
+     * @param  AbstractDBElement  $element
+     * @return User|null A user object, or null if no user could be determined.
+     */
+    public function getCreatingUser(AbstractDBElement $element): ?User
+    {
+        return $this->getLastUser($element, ElementCreatedLogEntry::class);
+    }
 }

src/Twig/LastUserExtension.php

@@ -0,0 +1,49 @@
+<?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\Twig;
+
+
+use App\Entity\Base\AbstractDBElement;
+use App\Entity\LogSystem\AbstractLogEntry;
+use Doctrine\ORM\EntityManagerInterface;
+use Twig\Extension\AbstractExtension;
+use Twig\TwigFunction;
+
+class LastUserExtension extends AbstractExtension
+{
+    private $em;
+    private $repo;
+
+    public function __construct(EntityManagerInterface $em)
+    {
+        $this->em = $em;
+        $this->repo = $em->getRepository(AbstractLogEntry::class);
+    }
+
+    public function getFunctions()
+    {
+        return [
+            new TwigFunction('getLastEditingUser', [$this->repo, 'getLastEditingUser']),
+            new TwigFunction('getCreatingUser', [$this->repo, 'getCreatingUser'])
+        ];
+    }
+}