ViewPhotoAlbum: build edit menu in controller

models/Asset.php

@@ -36,6 +36,11 @@ class Asset
 			$this->date_captured = new DateTime($data['date_captured']);
 	}
 
+	public function canBeEditedBy(User $user)
+	{
+		return $this->isOwnedBy($user) || $user->isAdmin();
+	}
+
 	public static function cleanSlug($slug)
 	{
 		// Only alphanumerical chars, underscores and forward slashes are allowed