#433, 435 work - handle empty in DHCPLSS, email templates fixes

front/plugins/plugin_helper.py

@@ -33,6 +33,13 @@ pialertConfigFile = read_config_file()
 timeZoneSetting = pialertConfigFile['TIMEZONE']
 timeZone = pytz.timezone(timeZoneSetting)
 
+# -------------------------------------------------------------------
+def handleEmpty(input):
+    if input == '' or None:
+        return 'null'
+    else:
+        return input
+
 # -------------------------------------------------------------------
 def decodeBase64(inputParamBase64):