Bypass cache when displaying settings on "settings" page (#4499)

* Bypass cache when displaying settings on "settings" page

- Sometimes caching issues can cause "old" values to be stored (depends on the worker)
- Until we have a shared cache, this is a problem
- Force the settings to be re-loaded from the database when displaying
- Further improvement would be to render them via the API

* Bypass cache for report and label printing

* Update test

(cherry picked from commit 18c7c1d756)

InvenTree/report/api.py

@@ -185,7 +185,7 @@ class ReportPrintMixin:
         outputs = []
 
         # In debug mode, generate single HTML output, rather than PDF
-        debug_mode = common.models.InvenTreeSetting.get_setting('REPORT_DEBUG_MODE')
+        debug_mode = common.models.InvenTreeSetting.get_setting('REPORT_DEBUG_MODE', cache=False)
 
         # Start with a default report name
         report_name = "report.pdf"
@@ -254,7 +254,7 @@ class ReportPrintMixin:
                     status=400,
                 )
 
-            inline = common.models.InvenTreeUserSetting.get_setting('REPORT_INLINE', user=request.user)
+            inline = common.models.InvenTreeUserSetting.get_setting('REPORT_INLINE', user=request.user, cache=False)
 
             return InvenTree.helpers.DownloadFile(
                 pdf,
@@ -342,7 +342,7 @@ class StockItemTestReportPrint(RetrieveAPI, StockItemReportMixin, ReportPrintMix
     def report_callback(self, item, report, request):
         """Callback to (optionally) save a copy of the generated report"""
 
-        if common.models.InvenTreeSetting.get_setting('REPORT_ATTACH_TEST_REPORT'):
+        if common.models.InvenTreeSetting.get_setting('REPORT_ATTACH_TEST_REPORT', cache=False):
 
             # Construct a PDF file object
             pdf = report.get_document().write_pdf()

InvenTree/report/tests.py

@@ -375,7 +375,7 @@ class BuildReportTest(ReportTest):
         self.assertEqual(headers['Content-Disposition'], 'attachment; filename="report.pdf"')
 
         # Now, set the download type to be "inline"
-        inline = InvenTreeUserSetting.get_setting_object('REPORT_INLINE', user=self.user)
+        inline = InvenTreeUserSetting.get_setting_object('REPORT_INLINE', cache=False, user=self.user)
         inline.value = True
         inline.save()