From cc53dd6a64b26002427d92482f98ef36723f4886 Mon Sep 17 00:00:00 2001
From: Graham McIntire <graham@mcintire.me>
Date: Fri, 6 Mar 2026 13:02:21 -0600
Subject: [PATCH] fix: access interface stats through latest_stat association

The template accessed if_in_octets/if_out_octets directly on the
Interface struct, but these fields live on InterfaceStat. Access
through interface.latest_stat with nil guard to prevent KeyError
when the association is not loaded.
---
 lib/towerops_web/live/device_live/show.html.heex | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/towerops_web/live/device_live/show.html.heex b/lib/towerops_web/live/device_live/show.html.heex
index 3c453192..0aff8183 100644
--- a/lib/towerops_web/live/device_live/show.html.heex
+++ b/lib/towerops_web/live/device_live/show.html.heex
@@ -1393,13 +1393,13 @@
                             <span :if={!interface.if_phys_address} class="text-gray-400">-</span>
                           </td>
                           <td class="px-3 py-2 text-right font-mono text-xs text-gray-600 dark:text-gray-400">
-                            {if interface.if_in_octets,
-                              do: format_bytes(interface.if_in_octets),
+                            {if interface.latest_stat && interface.latest_stat.if_in_octets,
+                              do: format_bytes(interface.latest_stat.if_in_octets),
                               else: "-"}
                           </td>
                           <td class="px-3 py-2 text-right font-mono text-xs text-gray-600 dark:text-gray-400">
-                            {if interface.if_out_octets,
-                              do: format_bytes(interface.if_out_octets),
+                            {if interface.latest_stat && interface.latest_stat.if_out_octets,
+                              do: format_bytes(interface.latest_stat.if_out_octets),
                               else: "-"}
                           </td>
                         </tr>