public function whenDiscussionWillBeSaved(DiscussionWillBeSaved $event)
{
if (isset($event->data['relationships']['tags']['data'])) {
$discussion = $event->discussion;
$actor = $event->actor;
$linkage = (array) $event->data['relationships']['tags']['data'];
$newTagIds = [];
foreach ($linkage as $link) {
$newTagIds[] = (int) $link['id'];
}
$newTags = Tag::whereIn('id', $newTagIds)->get();
$primaryCount = 0;
$secondaryCount = 0;
foreach ($newTags as $tag) {
if (!$tag->can($actor, 'startDiscussion')) {
throw new PermissionDeniedException();
}
if ($tag->position !== null && $tag->parent_id === null) {
$primaryCount++;
} else {
$secondaryCount++;
}
}
$this->validatePrimaryTagCount($primaryCount);
$this->validateSecondaryTagCount($secondaryCount);
$oldTags = [];
if ($discussion->exists) {
$oldTags = $discussion->tags()->get();
$oldTagIds = $oldTags->lists('id');
if ($oldTagIds == $newTagIds) {
return;
}
$discussion->raise(new DiscussionWasTagged($discussion, $actor, $oldTags->all()));
}
Discussion::saved(function ($discussion) use($newTagIds) {
$discussion->tags()->sync($newTagIds);
});
}
}
