From 5387256b938384f4b932d811ed0df78f41095038 Mon Sep 17 00:00:00 2001
From: relikd <info@relikd.de>
Date: Sat, 6 Aug 2022 17:45:38 +0200
Subject: [PATCH] fix: split_strip() arg must be str

---
 lektor_groupby/config.py | 4 +++-
 lektor_groupby/util.py   | 2 +-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/lektor_groupby/config.py b/lektor_groupby/config.py
index 37caa12..9ba1817 100644
--- a/lektor_groupby/config.py
+++ b/lektor_groupby/config.py
@@ -52,13 +52,15 @@ class Config:
 
     def set_order_by(self, order_by: Optional[str]) -> None:
         ''' If specified, children will be sorted according to keys. '''
-        self.order_by = split_strip(order_by, ',') or None
+        self.order_by = split_strip(order_by or '', ',') or None
 
     def __repr__(self) -> str:
         txt = '<GroupByConfig'
         for x in ['key', 'root', 'slug', 'template', 'enabled']:
             txt += ' {}="{}"'.format(x, getattr(self, x))
         txt += f' fields="{", ".join(self.fields)}"'
+        if self.order_by:
+            txt += ' order_by="{}"'.format(' ,'.join(self.order_by))
         return txt + '>'
 
     @staticmethod
diff --git a/lektor_groupby/util.py b/lektor_groupby/util.py
index ecb76a3..2689ea7 100644
--- a/lektor_groupby/util.py
+++ b/lektor_groupby/util.py
@@ -32,7 +32,7 @@ def most_used_key(keys: List[str]) -> str:
 def split_strip(data: str, delimiter: str = ',') -> List[str]:
     ''' Split by delimiter and strip each str separately. Omit if empty. '''
     ret = []
-    for x in (data or '').split(delimiter):
+    for x in data.split(delimiter):
         x = x.strip()
         if x:
             ret.append(x)