From 5b11186694c2027ae2ea44ab1d0d38c1202e8a66 Mon Sep 17 00:00:00 2001
From: Garrick Aden-Buie <garrick@adenbuie.com>
Date: Tue, 12 Dec 2023 17:30:28 -0500
Subject: [PATCH] fix(layout_columns): If the breakpoint name is an enum, need
 to collect the value (#902)

---
 shiny/ui/_layout_columns.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/shiny/ui/_layout_columns.py b/shiny/ui/_layout_columns.py
index 091de9b6e..adc171900 100644
--- a/shiny/ui/_layout_columns.py
+++ b/shiny/ui/_layout_columns.py
@@ -237,6 +237,8 @@ def col_widths_attrs(col_widths: BreakpointsOptional[int] | None) -> TagAttrs:
         return ret
 
     for break_name, value in col_widths.items():
+        if isinstance(break_name, Enum):
+            break_name = break_name.value
         break_name = f"col-widths-{break_name}"
         if value is None:
             ret[break_name] = ""