From 22ac627f171ffdcd3bead3ee1a1402bce37e754d Mon Sep 17 00:00:00 2001
From: Gabriel Augendre <gabriel@augendre.info>
Date: Sat, 2 Mar 2019 15:54:24 +0100
Subject: [PATCH] Fix str

---
 map/models.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/map/models.py b/map/models.py
index 48a157d..6f432fa 100644
--- a/map/models.py
+++ b/map/models.py
@@ -37,7 +37,12 @@ class FriendLocation(BaseModel):
         return str(self.longitude)
 
     def __str__(self):
-        return f'{self.friend.get_display_name()} from {self.start_date} to {self.end_date}'
+        result = f'{self.friend.get_display_name()}'
+        if self.start_date:
+            result += f' from {self.start_date}'
+        if self.end_date:
+            result += f' until {self.end_date}'
+        return result
 
     @property
     def safe_html(self):