fix: an error when current build_date is None

biothings · Jul 3, 2023 · 3141e5e · 3141e5e
1 parent 20a38d4
commit 3141e5e
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/biothings/web/services/metadata.py b/biothings/web/services/metadata.py
@@ -431,7 +431,8 @@ def __add__(self, other):
         # take the latest build_date
         # TODO if one of them is None
         build_date = self.build_date
-        if other.build_date and other.build_date > self.build_date:
+        if other.build_date and (not build_date or other.build_date > build_date):
+            # set to other.build_data if it's newer or current build_date is None
             build_date = other.build_date
 
         # combine build_version field
@@ -454,7 +455,7 @@ def __add__(self, other):
 
         return BiothingHubMeta(
             biothing_type=biothing_type,
-            build_date=build_date.isoformat(),
+            build_date=build_date.isoformat() if build_date else None,
             build_version=build_version,
             src=src,
             stats=stats,