From d40f113c563b45ad60cdf31285868baf9eff76ab Mon Sep 17 00:00:00 2001
From: Your Name <you@example.com>
Date: Fri, 22 Jul 2022 21:47:14 -0400
Subject: [PATCH] fix related series

---
 movies/models.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/movies/models.py b/movies/models.py
index 1aaa35b0..b3de0145 100644
--- a/movies/models.py
+++ b/movies/models.py
@@ -214,6 +214,8 @@ class Movie(Entity):
         qs = Q(imdb_code=imdb)
         if self.is_series:
             prefix = re.sub(r'\d+', '', re.sub(r'\s+第.+季', '', self.title))
+            if not prefix:
+                prefix = self.title
             qs = qs | Q(title__startswith=prefix)
         qs = qs & ~Q(id=self.id)
         return Movie.objects.filter(qs).order_by('season')