Message while database reset ongoing.. untested

core/utils.py

@@ -47,7 +47,14 @@ sha = hashlib.new('sha256')
 
 throw = 35.0
 
+class DatabaseResetOngoing(Exception):
+    """Exception class for errors while the server is reimporting everything"""
 
+    def __init__(self, message):
+        self.message = message
+
+    def __str__(self):
+        return f"DatabaseResetOngoing: {self.message}"
 
 # This is module-level executable. This is a Bad Thing. Especially when it touches the file system.
 try:

core/views/scans.py

@@ -6,6 +6,7 @@ from django.conf import settings
 from django.http import HttpResponse
 from django.shortcuts import render
 
+
 from troggle.core.models.caves import GetCaveLookup
 from troggle.core.models.survex import SingleScan, SurvexBlock, SurvexPersonRole
 from troggle.core.models.wallets import Wallet
@@ -14,7 +15,7 @@ from troggle.core.views.expo import getmimetype
 from troggle.parsers.caves import add_cave_to_pending_list
 from troggle.parsers.people import GetPersonExpeditionNameLookup
 from troggle.parsers.survex import set_walletdate
-from troggle.core.utils import current_expo
+from troggle.core.utils import current_expo, DatabaseResetOngoing
 
 
 """
@@ -277,7 +278,13 @@ def walletslistyear(request, year):
 
     def ticksyearwallet(year):
         manywallets = []
-        manywallets = Wallet.objects.filter(walletyear__year=year)
+        try:
+            manywallets = Wallet.objects.filter(walletyear__year=year)
+        except OperationalError:
+            # Reset is ongoing on server
+            raise DatabaseResetOngoing(
+                    f"Expo Database re-import ongoing on server.\nPlease wait 6 minutes.\n If still not working, contact a nerd."
+                ) 
 
         fix_manywallets(manywallets)
         return manywallets