fix: handle empty subject and body correctly (#115)

Author: schneider-felix

src/Resources/app/administration/src/module/frosh-mail-archive/page/frosh-mail-archive-detail/frosh-mail-archive-detail.twig

@@ -91,11 +91,15 @@
                     :title="$t('frosh-mail-archive.detail.content.title')"
                     position-identifier="frosh-mail-archive-content"
             >
-                <h4>HTML</h4>
-                <iframe :src="htmlText" sandbox frameborder="0"></iframe>
+                <template v-if="archive.htmlText">
+                    <h4>HTML</h4>
+                    <iframe :src="htmlText" sandbox frameborder="0"></iframe>
+                </template>
 
-                <h4>Plain</h4>
-                <iframe :src="plainText" sandbox frameborder="0"></iframe>
+                <template v-if="archive.plainText">
+                    <h4>Plain</h4>
+                    <iframe :src="plainText" sandbox frameborder="0"></iframe>
+                </template>
             </sw-card>
             <sw-card :title="$t('frosh-mail-archive.detail.attachments.title')"
                      position-identifier="frosh-mail-archive-attachments"

src/Services/MailSender.php

@@ -78,7 +78,7 @@ private function saveMail(string $id, Email $message, array $metadata): void
                 'id' => $id,
                 'sender' => [$message->getFrom()[0]->getAddress() => $message->getFrom()[0]->getName()],
                 'receiver' => $this->convertAddress($message->getTo()),
-                'subject' => $message->getSubject(),
+                'subject' => $message->getSubject() ?? '',
                 'plainText' => nl2br((string) $message->getTextBody()),
                 'htmlText' => $message->getHtmlBody(),
                 'emlPath' => $emlPath,