fix author byline handling

server/cp/set_byline_on_publish.py

@@ -8,10 +8,14 @@ def set_byline_on_publish(sender, item, updates, **kwargs):
     if updated.get("byline") or not updated.get("authors"):
         return
 
-    byline = ", ".join([author["name"] for author in item.get("authors", [])])
+    byline = ", ".join([get_author_name(author) for author in item.get("authors", [])])
 
     item["byline"] = updates["byline"] = byline
 
 
+def get_author_name(author) -> str:
+    return author.get("sub_label") or author.get("name")
+
+
 def init_app(app):
     item_publish.connect(set_byline_on_publish)

server/tests/set_byline_on_publish_test.py

@@ -13,3 +13,20 @@ def test_set_byline_on_publish():
     set_byline_on_publish(None, item, updates)
     assert item["byline"] == "foo"
     assert "byline" not in updates
+
+    item = {
+        "authors": [
+            {
+                "_id": ["64d13ff3446949ccb5348bdc", "writer"],
+                "role": "writer",
+                "name": "Writer",
+                "parent": "64d13ff3446949ccb5348bdc",
+                "sub_label": "foo bar",
+            }
+        ]
+    }
+
+    updates = {}
+    set_byline_on_publish(None, item, updates)
+    assert item["byline"] == "foo bar"
+    assert updates["byline"] == item["byline"]