From 2f3772f3bf3792f8733a3951e8f02c54fa67b67f Mon Sep 17 00:00:00 2001
From: Oliver <oliver.henry.walters@gmail.com>
Date: Thu, 11 Nov 2021 22:16:28 +1100
Subject: [PATCH] define "requires_restart" function for global setting

---
 InvenTree/common/models.py | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/InvenTree/common/models.py b/InvenTree/common/models.py
index 374cac24af..5b01a43ac9 100644
--- a/InvenTree/common/models.py
+++ b/InvenTree/common/models.py
@@ -545,6 +545,17 @@ class InvenTreeSetting(BaseInvenTreeSetting):
     even if that key does not exist.
     """
 
+    def save(self, *args, **kwargs):
+        """
+        When saving a global setting, check to see if it requires a server restart.
+        If so, set the "SERVER_RESTART_REQUIRED" setting to True
+        """
+
+        super().save()
+
+        if self.requires_restart():
+            InvenTreeSetting.set_setting('SERVER_REQUIRES_RESTART', True, None)
+
     """
     Dict of all global settings values:
 
@@ -563,6 +574,14 @@ class InvenTreeSetting(BaseInvenTreeSetting):
 
     GLOBAL_SETTINGS = {
 
+        'SERVER_RESTART_REQUIRED': {
+            'name': _('Restart required'),
+            'description': _('A setting has been changed which requires a server restart'),
+            'default': False,
+            'validator': bool,
+            'hidden': True,
+        },
+
         'INVENTREE_INSTANCE': {
             'name': _('InvenTree Instance Name'),
             'default': 'InvenTree server',
@@ -936,6 +955,18 @@ class InvenTreeSetting(BaseInvenTreeSetting):
 
         return self.__class__.get_setting(self.key)
 
+    def requires_restart(self):
+        """
+        Return True if this setting requires a server restart after changing
+        """
+
+        options = InvenTreeSetting.GLOBAL_SETTINGS.get(self.key, None)
+
+        if options:
+            return options.get('requires_restart', False)
+        else:
+            return False
+
 
 class InvenTreeUserSetting(BaseInvenTreeSetting):
     """