Controllers/api/v1/channel.php

@@ -222,6 +222,11 @@ class channel implements Interfaces\Api
  }
  }
 
+ if (isset($_POST['nsfw']) && is_array($_POST['nsfw'])) {
+ $nsfw = array_unique(array_merge($_POST['nsfw'], $owner->getNsfwLock()));
+ $update['nsfw'] = json_encode($nsfw);
+ $owner->setNsfw($nsfw);
+ }
 
  if (isset($_POST['tags']) && $_POST['tags']) {
  $update['tags'] = json_encode($_POST['tags']);

classes/ElggEntity.php

@@ -71,8 +71,6 @@ abstract class ElggEntity extends ElggData implements
 		$this->attributes['tags'] = null;
 		$this->attributes['nsfw'] = [];
 		$this->attributes['nsfw_lock'] = [];
-		$this->attributes['nsfw'] = [];
-		$this->attributes['nsfw_lock'] = [];
 		$this->attributes['moderator_guid'] = null;
 		$this->attributes['time_moderated'] = null;
 		$this->attributes['allow_comments'] = true;