Resolve #3195 "Name der Veranstaltung in Terminlöschungs-Nachricht"

Closes #3195

Merge request studip/studip!2162

lib/models/resources/ResourceBooking.class.php

@@ -1892,6 +1892,10 @@ class ResourceBooking extends SimpleORMap implements PrivacyObject, Studip\Calen
 
         $booking_resource = Resource::find($this->resource_id);
         $booking_user = User::find($this->booking_user_id);
+        $booking_course = null;
+        if ($this->course_id) {
+            $booking_course = Course::find($this->course_id);
+        }
         if (!$booking_resource || !$booking_user) {
             //Nothing we can do here.
             return;
@@ -1913,6 +1917,7 @@ class ResourceBooking extends SimpleORMap implements PrivacyObject, Studip\Calen
         $template->set_attribute('begin', $this->begin);
         $template->set_attribute('end', $this->end);
         $template->set_attribute('deleting_user', User::findCurrent());
+        $template->set_attribute('booking_course', $booking_course);
 
         $mail_text = $template->render();
 

locale/de/LC_MAILS/delete_booking_notification.php

@@ -6,6 +6,10 @@ Ihre Buchung der Ressource <?= $resource->name ?> am <?= date('d.m.Y', $begin) ?
  von <?= date('H:i', $begin) ?> bis <?= date('H:i', $end) ?> Uhr wurde gelöscht.
 <? endif ?>
 
+<? if ($booking_course instanceof Course): ?>
+Es handelte sich um eine Buchung für die Veranstaltung <?= $booking_course->getFullname() ?>.
+<? endif ?>
+
 <? if ($deleting_user instanceof User) : ?>
 Die Löschung wurde von <?= $deleting_user->getFullName() ?> vorgenommen.
 <? endif ?>

locale/en/LC_MAILS/delete_booking_notification.php

@@ -6,6 +6,10 @@ Your booking of the resource <?= $resource->name ?> on <?= date('d.m.Y', $begin)
  from <?= date('H:i', $begin) ?> to <?= date('H:i', $end) ?> has been deleted.
 <? endif ?>
 
+<? if ($booking_course instanceof Course): ?>
+The booking deleted belonged to course <?= $booking_course->getFullname() ?>.
+<? endif ?>
+
 <? if ($deleting_user instanceof User) : ?>
 The deletion has been made by <?= $deleting_user->getFullName() ?>.
 <? endif ?>