From 71461eefd51bfcc76675b9493baf9055e77e57c7 Mon Sep 17 00:00:00 2001
From: proddy <paul@derbyshire.nl>
Date: Thu, 22 Oct 2020 18:57:27 +0200
Subject: [PATCH] show not available when a dallas sensor is offline

---
 interface/src/project/EMSESPDevicesForm.tsx | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/interface/src/project/EMSESPDevicesForm.tsx b/interface/src/project/EMSESPDevicesForm.tsx
index f408ba25d..a8c1ec2cb 100644
--- a/interface/src/project/EMSESPDevicesForm.tsx
+++ b/interface/src/project/EMSESPDevicesForm.tsx
@@ -70,6 +70,13 @@ type EMSESPDevicesFormProps = RestFormProps<EMSESPDevices> &
   AuthenticatedContextProps &
   WithWidthProps;
 
+function formatTemp(t: string) {
+  if (t == null) {
+    return "(not available)";
+  }
+  return t + " °C";
+}
+
 class EMSESPDevicesForm extends Component<
   EMSESPDevicesFormProps,
   EMSESPDevicesFormState
@@ -194,7 +201,7 @@ class EMSESPDevicesForm extends Component<
                     {sensorData.id}
                   </TableCell>
                   <TableCell align="right">
-                    {sensorData.temp}&nbsp;&deg;C
+                    {formatTemp(sensorData.temp)}
                   </TableCell>
                 </TableRow>
               ))}