feat(frontend): disable_theme_storage (#11208)

* feat(frontend): disable_theme_storage

* bump API version

* fix access pattern

src/backend/InvenTree/InvenTree/api.py

@@ -34,7 +34,7 @@ from plugin.serializers import MetadataSerializer
 from users.models import ApiToken
 from users.permissions import check_user_permission, prefetch_rule_sets
 
-from .helpers import plugins_info
+from .helpers import plugins_info, str2bool
 from .helpers_email import is_email_configured
 from .mixins import ListAPI, RetrieveUpdateAPI
 from .status import check_system_health, is_worker_running
@@ -238,6 +238,7 @@ class InfoApiSerializer(serializers.Serializer):
         splash = serializers.CharField()
         login_message = serializers.CharField(allow_null=True)
         navbar_message = serializers.CharField(allow_null=True)
+        disable_theme_storage = serializers.BooleanField(default=False)
 
     server = serializers.CharField(read_only=True)
     id = serializers.CharField(read_only=True, allow_null=True)
@@ -310,6 +311,9 @@ class InfoView(APIView):
                 'splash': helpers.getSplashScreen(),
                 'login_message': helpers.getCustomOption('login_message'),
                 'navbar_message': helpers.getCustomOption('navbar_message'),
+                'disable_theme_storage': str2bool(
+                    helpers.getCustomOption('disable_theme_storage')
+                ),
             },
             'active_plugins': plugins_info(),
             # Following fields are only available to staff users

src/backend/InvenTree/InvenTree/api_version.py

@@ -1,11 +1,14 @@
 """InvenTree API version information."""
 
 # InvenTree API version
-INVENTREE_API_VERSION = 443
+INVENTREE_API_VERSION = 444
 """Increment this API version number whenever there is a significant change to the API that any clients need to know about."""
 
 INVENTREE_API_TEXT = """
 
+v444 -> 2026-01-27 : https://github.com/inventree/InvenTree/pull/11208
+    - Add customize option to disable theme loading from user profile (mainly for demo site use)
+
 v443 -> 2026-01-21 : https://github.com/inventree/InvenTree/pull/11177
     - Adds IPN ordering option for BomItem API endpoint
     - Adds IPN ordering option for BuildLine API endpoint

src/backend/InvenTree/config_template.yaml

@@ -227,6 +227,7 @@ ldap:
 #   navbar_message: <h6>InvenTree demo mode <a href='https://inventree.org/demo.html'><span class='fas fa-info-circle'></span></a></h6>
 #   hide_admin_link: true
 #   hide_password_reset: true
+#   disable_theme_storage: true
 #   logo: img/custom_logo.png
 #   splash: img/custom_splash.jpg
 

src/frontend/src/functions/auth.tsx

@@ -270,7 +270,15 @@ function observeProfile() {
   const user = useUserState.getState().getUser();
   const { language, setLanguage, userTheme, setTheme, setWidgets, setLayouts } =
     useLocalState.getState();
+  const { server } = useServerApiState.getState(); //(useShallow((state) => [state.server]));
+
+  // fast exit if loading is disabled for this server
+  if (server.customize?.disable_theme_storage) {
+    return;
+  }
+
   if (user) {
+    // set profile language
     if (user.profile?.language && language != user.profile.language) {
       showNotification({
         title: t`Language changed`,
@@ -281,6 +289,7 @@ function observeProfile() {
       setLanguage(user.profile.language, true);
     }
 
+    // set profile theme
     if (user.profile?.theme) {
       // extract keys of usertheme and set them to the values of user.profile.theme
       const newTheme = Object.keys(userTheme).map((key) => {
@@ -302,6 +311,7 @@ function observeProfile() {
       }
     }
 
+    // set profile widgets/layouts
     if (user.profile?.widgets) {
       const data = user.profile.widgets;
       // split data into widgets and layouts (either might be undefined)

src/frontend/src/states/states.tsx

@@ -37,6 +37,7 @@ export interface ServerAPIProps {
     splash: string;
     login_message: string;
     navbar_message: string;
+    disable_theme_storage: boolean;
   };
 }