Allow to add a comment when editing/creating/deleting an element.

src/Controller/AdminPages/BaseAdminController.php

@@ -52,6 +52,7 @@ use App\Services\Attachments\AttachmentManager;
 use App\Services\Attachments\AttachmentSubmitHandler;
 use App\Services\EntityExporter;
 use App\Services\EntityImporter;
+use App\Services\LogSystem\EventCommentHelper;
 use App\Services\StructuralElementRecursionHelper;
 use Doctrine\ORM\EntityManagerInterface;
 use InvalidArgumentException;
@@ -77,9 +78,11 @@ abstract class BaseAdminController extends AbstractController
     protected $translator;
     protected $attachmentHelper;
     protected $attachmentSubmitHandler;
+    protected $commentHelper;
 
     public function __construct(TranslatorInterface $translator, UserPasswordEncoderInterface $passwordEncoder,
-                                AttachmentManager $attachmentHelper, AttachmentSubmitHandler $attachmentSubmitHandler)
+                                AttachmentManager $attachmentHelper, AttachmentSubmitHandler $attachmentSubmitHandler,
+                        EventCommentHelper $commentHelper)
     {
         if ('' === $this->entity_class || '' === $this->form_class || '' === $this->twig_template || '' === $this->route_base) {
             throw new InvalidArgumentException('You have to override the $entity_class, $form_class, $route_base and $twig_template value in your subclasss!');
@@ -93,6 +96,7 @@ abstract class BaseAdminController extends AbstractController
         $this->passwordEncoder = $passwordEncoder;
         $this->attachmentHelper = $attachmentHelper;
         $this->attachmentSubmitHandler = $attachmentSubmitHandler;
+        $this->commentHelper = $commentHelper;
     }
 
 
@@ -131,6 +135,8 @@ abstract class BaseAdminController extends AbstractController
                 }
             }
 
+            $this->commentHelper->setMessage($form['log_comment']->getData());
+
             $em->persist($entity);
             $em->flush();
             $this->addFlash('success', 'entity.edit_flash');
@@ -188,6 +194,8 @@ abstract class BaseAdminController extends AbstractController
                 }
             }
 
+            $this->commentHelper->setMessage($form['log_comment']->getData());
+
             $em->persist($new_entity);
             $em->flush();
             $this->addFlash('success', 'entity.created_flash');
@@ -215,6 +223,10 @@ abstract class BaseAdminController extends AbstractController
                 'csv_separator' => $data['csv_separator'],
             ];
 
+            $this->commentHelper->setMessage('Import ' . $file->getClientOriginalName());
+
+
+
             $errors = $importer->fileToDBEntities($file, $this->entity_class, $options);
 
             foreach ($errors as $name => $error) {
@@ -280,6 +292,8 @@ abstract class BaseAdminController extends AbstractController
                 $entityManager->remove($entity);
             }
 
+            $this->commentHelper->setMessage($request->request->get('log_comment', null));
+
             //Flush changes
             $entityManager->flush();
 

src/Controller/PartController.php

@@ -50,6 +50,7 @@ use App\Form\Part\PartBaseType;
 use App\Services\Attachments\AttachmentManager;
 use App\Services\Attachments\AttachmentSubmitHandler;
 use App\Services\Attachments\PartPreviewGenerator;
+use App\Services\LogSystem\EventCommentHelper;
 use App\Services\LogSystem\HistoryHelper;
 use App\Services\LogSystem\TimeTravel;
 use App\Services\PricedetailHelper;
@@ -71,12 +72,15 @@ class PartController extends AbstractController
     protected $attachmentManager;
     protected $pricedetailHelper;
     protected $partPreviewGenerator;
+    protected $commentHelper;
 
-    public function __construct(AttachmentManager $attachmentManager, PricedetailHelper $pricedetailHelper, PartPreviewGenerator $partPreviewGenerator)
+    public function __construct(AttachmentManager $attachmentManager, PricedetailHelper $pricedetailHelper,
+        PartPreviewGenerator $partPreviewGenerator, EventCommentHelper $commentHelper)
     {
         $this->attachmentManager = $attachmentManager;
         $this->pricedetailHelper = $pricedetailHelper;
         $this->partPreviewGenerator = $partPreviewGenerator;
+        $this->commentHelper = $commentHelper;
     }
 
     /**
@@ -166,6 +170,8 @@ class PartController extends AbstractController
                 }
             }
 
+            $this->commentHelper->setMessage($form['log_comment']->getData());
+
             $em->persist($part);
             $em->flush();
             $this->addFlash('info', 'part.edited_flash');
@@ -197,6 +203,8 @@ class PartController extends AbstractController
         if ($this->isCsrfTokenValid('delete'.$part->getId(), $request->request->get('_token'))) {
             $entityManager = $this->getDoctrine()->getManager();
 
+            $this->commentHelper->setMessage($request->request->get('log_comment', null));
+
             //Remove part
             $entityManager->remove($part);
 
@@ -257,6 +265,8 @@ class PartController extends AbstractController
                 }
             }
 
+            $this->commentHelper->setMessage($form['log_comment']->getData());
+
             $em->persist($new_part);
             $em->flush();
             $this->addFlash('success', 'part.created_flash');

src/Entity/Contracts/LogWithCommentInterface.php

@@ -0,0 +1,45 @@
+<?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 Affero General Public License as published
+ * by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace App\Entity\Contracts;
+
+
+interface LogWithCommentInterface
+{
+    /**
+     * Checks if this log entry has a user provided comment.
+     * @return bool
+     */
+    public function hasComment(): bool;
+
+    /**
+     * Gets the user provided comment associated with this log entry.
+     * Returns null if not comment was set.
+     * @return string|null
+     */
+    public function getComment(): ?string;
+
+    /**
+     * Sets the user provided comment associated with this log entry.
+     * @param  string|null  $new_comment
+     * @return $this
+     */
+    public function setComment(?string $new_comment): self;
+}

src/Entity/LogSystem/ElementCreatedLogEntry.php

@@ -43,12 +43,13 @@ declare(strict_types=1);
 namespace App\Entity\LogSystem;
 
 use App\Entity\Base\AbstractDBElement;
+use App\Entity\Contracts\LogWithCommentInterface;
 use Doctrine\ORM\Mapping as ORM;
 
 /**
  * @ORM\Entity()
  */
-class ElementCreatedLogEntry extends AbstractLogEntry
+class ElementCreatedLogEntry extends AbstractLogEntry implements LogWithCommentInterface
 {
     protected $typeString = 'element_created';
 
@@ -78,4 +79,29 @@ class ElementCreatedLogEntry extends AbstractLogEntry
     {
         return null !== $this->getCreationInstockValue();
     }
+
+    /**
+     * @inheritDoc
+     */
+    public function hasComment(): bool
+    {
+        return isset($this->extra['m']);
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getComment(): ?string
+    {
+        return $this->extra['m'] ?? null;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function setComment(?string $new_comment): LogWithCommentInterface
+    {
+        $this->extra['m'] = $new_comment;
+        return $this;
+    }
 }

src/Entity/LogSystem/ElementDeletedLogEntry.php

@@ -43,6 +43,7 @@ declare(strict_types=1);
 namespace App\Entity\LogSystem;
 
 use App\Entity\Base\AbstractDBElement;
+use App\Entity\Contracts\LogWithCommentInterface;
 use App\Entity\Contracts\NamedElementInterface;
 use App\Entity\Contracts\TimeTravelInterface;
 use Doctrine\ORM\Mapping as ORM;
@@ -50,7 +51,7 @@ use Doctrine\ORM\Mapping as ORM;
 /**
  * @ORM\Entity()
  */
-class ElementDeletedLogEntry extends AbstractLogEntry implements TimeTravelInterface
+class ElementDeletedLogEntry extends AbstractLogEntry implements TimeTravelInterface, LogWithCommentInterface
 {
     protected $typeString = 'element_deleted';
 
@@ -111,4 +112,29 @@ class ElementDeletedLogEntry extends AbstractLogEntry implements TimeTravelInter
     {
         return $this->extra['d'] ?? [];
     }
+
+    /**
+     * @inheritDoc
+     */
+    public function hasComment(): bool
+    {
+        return isset($this->extra['m']);
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getComment(): ?string
+    {
+        return $this->extra['m'] ?? null;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function setComment(?string $new_comment): LogWithCommentInterface
+    {
+        $this->extra['m'] = $new_comment;
+        return $this;
+    }
 }

src/Entity/LogSystem/ElementEditedLogEntry.php

@@ -43,13 +43,14 @@ declare(strict_types=1);
 namespace App\Entity\LogSystem;
 
 use App\Entity\Base\AbstractDBElement;
+use App\Entity\Contracts\LogWithCommentInterface;
 use App\Entity\Contracts\TimeTravelInterface;
 use Doctrine\ORM\Mapping as ORM;
 
 /**
  * @ORM\Entity()
  */
-class ElementEditedLogEntry extends AbstractLogEntry implements TimeTravelInterface
+class ElementEditedLogEntry extends AbstractLogEntry implements TimeTravelInterface, LogWithCommentInterface
 {
     protected $typeString = 'element_edited';
 
@@ -72,16 +73,6 @@ class ElementEditedLogEntry extends AbstractLogEntry implements TimeTravelInterf
         return $this;
     }
 
-    /**
-     * Returns the message associated with this edit change.
-     *
-     * @return string
-     */
-    public function getMessage(): string
-    {
-        return $this->extra['m'] ?? '';
-    }
-
     /**
      * @inheritDoc
      */
@@ -97,4 +88,29 @@ class ElementEditedLogEntry extends AbstractLogEntry implements TimeTravelInterf
     {
         return $this->extra['d'] ?? [];
     }
+
+    /**
+     * @inheritDoc
+     */
+    public function hasComment(): bool
+    {
+        return isset($this->extra['m']);
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getComment(): ?string
+    {
+        return $this->extra['m'] ?? null;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function setComment(?string $new_comment): LogWithCommentInterface
+    {
+        $this->extra['m'] = $new_comment;
+        return $this;
+    }
 }

src/EventSubscriber/EventLoggerSubscriber.php

@@ -25,6 +25,7 @@ use App\Entity\LogSystem\AbstractLogEntry;
 use App\Entity\LogSystem\ElementCreatedLogEntry;
 use App\Entity\LogSystem\ElementDeletedLogEntry;
 use App\Entity\LogSystem\ElementEditedLogEntry;
+use App\Services\LogSystem\EventCommentHelper;
 use App\Services\LogSystem\EventLogger;
 use Doctrine\Common\EventSubscriber;
 use Doctrine\ORM\Event\OnFlushEventArgs;
@@ -38,11 +39,13 @@ class EventLoggerSubscriber implements EventSubscriber
 {
     protected $logger;
     protected $serializer;
+    protected $eventCommentHelper;
 
-    public function __construct(EventLogger $logger, SerializerInterface $serializer)
+    public function __construct(EventLogger $logger, SerializerInterface $serializer, EventCommentHelper $commentHelper)
     {
         $this->logger = $logger;
         $this->serializer = $serializer;
+        $this->eventCommentHelper = $commentHelper;
     }
 
     public function onFlush(OnFlushEventArgs $eventArgs)
@@ -59,6 +62,10 @@ class EventLoggerSubscriber implements EventSubscriber
             if ($this->validEntity($entity)) {
                 $log = new ElementEditedLogEntry($entity);
                 $this->saveChangeSet($entity, $log, $uow);
+                //Add user comment to log entry
+                if ($this->eventCommentHelper->isMessageSet()) {
+                    $log->setComment($this->eventCommentHelper->getMessage());
+                }
                 $this->logger->log($log);
             }
         }
@@ -66,6 +73,10 @@ class EventLoggerSubscriber implements EventSubscriber
         foreach ($uow->getScheduledEntityDeletions() as $entity) {
             if ($this->validEntity($entity)) {
                 $log = new ElementDeletedLogEntry($entity);
+                //Add user comment to log entry
+                if ($this->eventCommentHelper->isMessageSet()) {
+                    $log->setComment($this->eventCommentHelper->getMessage());
+                }
                 $this->saveChangeSet($entity, $log, $uow);
                 $this->logger->log($log);
             }
@@ -82,7 +93,6 @@ class EventLoggerSubscriber implements EventSubscriber
         }
 
         $changeSet = $uow->getEntityChangeSet($entity);
-        dump($changeSet);
         $old_data = array_diff(array_combine(array_keys($changeSet), array_column($changeSet, 0)), [null]);
         $logEntry->setOldData($old_data);
     }
@@ -95,6 +105,10 @@ class EventLoggerSubscriber implements EventSubscriber
         $entity = $args->getObject();
         if ($this->validEntity($entity)) {
             $log = new ElementCreatedLogEntry($entity);
+            //Add user comment to log entry
+            if ($this->eventCommentHelper->isMessageSet()) {
+                $log->setComment($this->eventCommentHelper->getMessage());
+            }
             $this->logger->log($log);
         }
     }
@@ -107,6 +121,9 @@ class EventLoggerSubscriber implements EventSubscriber
         if ($uow->hasPendingInsertions()) {
             $em->flush();
         }
+
+        //Clear the message provided by user.
+        $this->eventCommentHelper->clearMessage();
     }
 
     /**

src/Form/AdminPages/BaseEntityAdminForm.php

@@ -144,6 +144,13 @@ class BaseEntityAdminForm extends AbstractType
             'entity' => $entity,
         ]);
 
+        $builder->add('log_comment', TextType::class, [
+            'label' => 'edit.log_comment',
+            'mapped' => false,
+            'required' => false,
+            'empty_data' => null,
+        ]);
+
         //Buttons
         $builder->add('save', SubmitType::class, [
             'label' => $is_new ? 'entity.create' : 'entity.edit.save',

src/Form/Part/PartBaseType.php

@@ -264,6 +264,13 @@ class PartBaseType extends AbstractType
             ],
         ]);
 
+        $builder->add('log_comment', TextType::class, [
+            'label' => 'edit.log_comment',
+            'mapped' => false,
+            'required' => false,
+            'empty_data' => null,
+        ]);
+
         $builder
             //Buttons
             ->add('save', SubmitType::class, ['label' => 'part.edit.save'])

src/Repository/LogEntryRepository.php

@@ -90,7 +90,7 @@ class LogEntryRepository extends EntityRepository
             ->where('log INSTANCE OF ' . ElementEditedLogEntry::class)
             ->andWhere('log.target_type = :target_type')
             ->andWhere('log.target_id = :target_id')
-            ->andWhere('log.timestamp > :until')
+            ->andWhere('log.timestamp >= :until')
             ->orderBy('log.timestamp', 'DESC');
 
         $qb->setParameters([

src/Services/EntityExporter.php

@@ -151,7 +151,8 @@ class EntityExporter
             // Create the disposition of the file
             $disposition = $response->headers->makeDisposition(
                 ResponseHeaderBag::DISPOSITION_ATTACHMENT,
-                $filename
+                $filename,
+                $string = preg_replace('![^'.preg_quote('-').'a-z0-_9\s]+!', '', strtolower($filename))
             );
             // Set the content disposition
             $response->headers->set('Content-Disposition', $disposition);

src/Services/LogSystem/EventCommentHelper.php

@@ -0,0 +1,72 @@
+<?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 Affero General Public License as published
+ * by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace App\Services\LogSystem;
+
+
+class EventCommentHelper
+{
+    protected const MAX_MESSAGE_LENGTH = 255;
+
+    protected $message;
+
+    public function __construct()
+    {
+        $message = null;
+    }
+
+    /**
+     * Set the message that will be saved for all ElementEdited/Created/Deleted messages during the next flush.
+     * Set to null if no message should be shown.
+     * After the flush this message is cleared.
+     * @param  string|null  $message
+     */
+    public function setMessage(?string $message): void
+    {
+        //Restrict the length of the string
+        $this->message = mb_strimwidth($message, 0, self::MAX_MESSAGE_LENGTH, '...');
+    }
+
+    /**
+     * Returns the currently set message, or null if no message is set yet.
+     * @return string|null
+     */
+    public function getMessage(): ?string
+    {
+        return $this->message;
+    }
+
+    /**
+     * Clear the currently set message.
+     */
+    public function clearMessage(): void
+    {
+        $this->message = null;
+    }
+
+    /**
+     * Check if a message is currently set.
+     * @return bool
+     */
+    public function isMessageSet(): bool
+    {
+        return is_string($this->message);
+    }
+}

src/Services/LogSystem/LogEntryExtraFormatter.php

@@ -116,24 +116,38 @@ class LogEntryExtraFormatter
             );
         }
 
-        if ($context instanceof ElementCreatedLogEntry && $context->hasCreationInstockValue()) {
+        if ($context instanceof ElementCreatedLogEntry ) {
-            return sprintf(
+            $comment = '';
-                '<i>%s</i>: %s',
+            if ($context->hasComment()) {
-                $this->translator->trans('log.element_created.original_instock'),
+                $comment = htmlspecialchars($context->getComment()) . '; ';
-                $context->getCreationInstockValue()
+            }
-            );
+            if($context->hasCreationInstockValue()) {
+                return $comment . sprintf(
+                        '<i>%s</i>: %s',
+                        $this->translator->trans('log.element_created.original_instock'),
+                        $context->getCreationInstockValue()
+                    );
+            }
+            return $comment;
         }
 
         if ($context instanceof ElementDeletedLogEntry) {
-            return sprintf(
+            $comment = '';
-                '<i>%s</i>: %s',
+            if ($context->hasComment()) {
-                $this->translator->trans('log.element_deleted.old_name'),
+                $comment = htmlspecialchars($context->getComment()) . '; ';
-                $context->getOldName() ?? $this->translator->trans('log.element_deleted.old_name.unknown')
+            }
-            );
+            return $comment . sprintf(
+                    '<i>%s</i>: %s',
+                    $this->translator->trans('log.element_deleted.old_name'),
+                    $context->getOldName() ?? $this->translator->trans('log.element_deleted.old_name.unknown')
+                );
         }
 
-        if ($context instanceof ElementEditedLogEntry && ! empty($context->getMessage())) {
+        if ($context instanceof ElementEditedLogEntry) {
-            return htmlspecialchars($context->getMessage());
+            if ($context->hasComment()) {
+                return htmlspecialchars($context->getComment());
+            }
+
         }
 
         if ($context instanceof InstockChangedLogEntry) {

templates/AdminPages/EntityAdminBase.html.twig

@@ -1,5 +1,7 @@
 {% extends "main_card.html.twig" %}
 
+{% form_theme form.log_comment 'bootstrap_4_layout.html.twig' %}
+
 {% block card_content %}
     <div class="row">
         <div class="col-sm-4">
@@ -96,7 +98,21 @@
                             </div>
                         </div>
 
-                        {{ form_row(form.save) }}
+                        <div class="form-group row">
+                            <div class="col-sm-9 offset-sm-3">
+                                <div class="btn-group">
+                                    {{ form_widget(form.save) }}
+                                    <button type="button" class="btn {% if entity.id is not null %}btn-primary{% else %}btn-success{% endif %} dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+                                        <span class="sr-only">Toggle Dropdown</span>
+                                    </button>
+                                    <div class="dropdown-menu p-2">
+                                        {{ form_row(form.log_comment)}}
+                                    </div>
+                                </div>
+
+                            </div>
+                        </div>
+
                         {{ form_row(form.reset) }}
                         {{ form_end(form) }}
 

templates/AdminPages/_delete_form.html.twig

@@ -7,12 +7,22 @@
         <div class=""></div>
         <div class="col-sm offset-sm-3 pl-2">
             {% set delete_disabled = (not is_granted("delete", entity)) or (entity.group is defined and entity.id == 1) %}
-            <button class="btn btn-danger" {% if delete_disabled %}disabled{% endif %}>{% trans %}entity.delete{% endtrans %}</button>
+            <div class="btn-group">
-            {% if entity.parent is defined  %}
+                <button class="btn btn-danger" {% if delete_disabled %}disabled{% endif %}>{% trans %}entity.delete{% endtrans %}</button>
-            <div class="ml-2 custom-control custom-checkbox custom-control-inline">
+                <button type="button" class="btn btn-danger dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
-                <input type="checkbox" class="custom-control-input" id="recursive" name="delete_recursive">
+                    <span class="sr-only">Toggle Dropdown</span>
-                <label class="custom-control-label" for="recursive">{% trans %}entity.delete.recursive{% endtrans %}</label>
+                </button>
+                <div class="dropdown-menu p-2">
+                    <div class="form-group"><label for="delete_log_comment">{% trans %}edit.log_comment{% endtrans %}</label>
+                        <input type="text" id="delete_log_comment" name="log_comment" class="form-control">
+                    </div>
+                </div>
             </div>
+            {% if entity.parent is defined  %}
+                <div class="ml-2 custom-control custom-checkbox custom-control-inline">
+                    <input type="checkbox" class="custom-control-input" id="recursive" name="delete_recursive">
+                    <label class="custom-control-label" for="recursive">{% trans %}entity.delete.recursive{% endtrans %}</label>
+                </div>
             {% endif %}
         </div>
     </div>

templates/Parts/edit/edit_part_info.html.twig

@@ -84,11 +84,23 @@
         <div class="tab-pane fade p-2" id="comment" role="tabpanel">
             {{ form_widget(form.comment)}}
         </div>
-
-
-
     </div>
-    {{ form_row(form.save) }}
+
+    <div class="form-group row">
+        <div class="col-sm-9 offset-sm-3">
+            <div class="btn-group">
+                {{ form_widget(form.save) }}
+                <button type="button" class="btn btn-primary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+                    <span class="sr-only">Toggle Dropdown</span>
+                </button>
+                <div class="dropdown-menu p-2">
+                    {{ form_row(form.log_comment)}}
+                </div>
+            </div>
+
+        </div>
+    </div>
+
     {{ form_row(form.reset) }}
     {{ form_errors(form) }}
     {{ form_end(form) }}

templates/Parts/info/_tools.html.twig

@@ -31,9 +31,19 @@
     <input type="hidden" name="_method" value="DELETE">
     <input type="hidden" name="_token" value="{{ csrf_token('delete' ~ part.id) }}">
     <div class="form-group">
-        <button class="btn btn-danger" {% if not is_granted("delete", part) %}disabled{% endif %}>
+        <div class="btn-group">
-        <i class="fa fa-trash fa-fw"></i>
+            <button class="btn btn-danger" {% if not is_granted("delete", part) %}disabled{% endif %}>
-        {% trans %}part.delete{% endtrans %}
+                <i class="fa fa-trash fa-fw"></i>
-        </button>
+                {% trans %}part.delete{% endtrans %}
+            </button>
+            <button type="button" class="btn btn-danger dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+                <span class="sr-only">Toggle Dropdown</span>
+            </button>
+            <div class="dropdown-menu p-2">
+                <div class="form-group"><label for="delete_log_comment">{% trans %}edit.log_comment{% endtrans %}</label>
+                    <input type="text" id="delete_log_comment" name="log_comment" class="form-control">
+                </div>
+            </div>
+        </div>
     </div>
 </form>

tests/Services/LogSystem/EventCommentHelperTest.php

@@ -0,0 +1,71 @@
+<?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 Affero General Public License as published
+ * by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace App\Tests\Services\LogSystem;
+
+use App\Services\LogSystem\EventCommentHelper;
+use App\Services\LogSystem\EventLogger;
+use PHPUnit\Framework\TestCase;
+use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
+
+class EventCommentHelperTest extends WebTestCase
+{
+    /**
+     * @var EventCommentHelper
+     */
+    protected $service;
+
+    protected function setUp(): void
+    {
+        parent::setUp(); // TODO: Change the autogenerated stub
+
+        //Get an service instance.
+        self::bootKernel();
+        $this->service = self::$container->get(EventCommentHelper::class);
+    }
+
+    public function testInitialState()
+    {
+        $this->assertNull($this->service->getMessage());
+        $this->assertFalse($this->service->isMessageSet());
+    }
+
+    public function testClearMessage()
+    {
+        $this->service->setMessage('Test');
+        $this->assertTrue($this->service->isMessageSet());
+        $this->service->clearMessage();
+        $this->assertFalse($this->service->isMessageSet());
+    }
+
+    public function testGetSetMessage()
+    {
+        $this->service->setMessage('Test');
+        $this->assertSame('Test', $this->service->getMessage());
+    }
+
+    public function testIsMessageSet()
+    {
+        $this->service->setMessage('Test');
+        $this->assertTrue($this->service->isMessageSet());
+        $this->service->clearMessage();
+        $this->assertFalse($this->service->isMessageSet());
+    }
+}

translations/messages.en.xlf

@@ -6376,7 +6376,7 @@ Element 3</target>
     <unit id="tagdXMa" name="part.info.timetravel_hint">
       <segment>
         <source>part.info.timetravel_hint</source>
-        <target><![CDATA[This is how the part appeared on %timestamp%. <i>Please note that this feature is experimental, so the infos are maybe not correct.</i>]]></target>
+        <target><![CDATA[This is how the part appeared before %timestamp%. <i>Please note that this feature is experimental, so the infos are maybe not correct.</i>]]></target>
       </segment>
     </unit>
   </file>