SHould be nearly working, but crashes on saving edited entry

core/models/logbooks.py

@@ -107,7 +107,31 @@ class LogbookEntry(TroggleModel):
             index = index % mx
         return index
 
-def writelogbook(year, filename):
+READ_THIS="""<!--
+READTHIS
+
+  ######                          #######                 
+ #     # ######   ##   #####        #    #    # #  ####  
+ #     # #       #  #  #    #       #    #    # # #      
+ ######  #####  #    # #    #       #    ###### #  ####  
+ #   #   #      ###### #    #       #    #    # #      # 
+ #    #  #      #    # #    #       #    #    # # #    # 
+ #     # ###### #    # #####        #    #    # #  ####  
+                                          
+THIS FILE IS NOT THE MASTER. 
+ANY EDITS YOU MAKE HERE WILL BE OVERWRITTEN.
+
+The MASTER record for this expo is the individual JSON files in
+expoweb/years/2025/log_entries/*.json
+In due course, when this expo is archived, the JSON files will be deleted
+and this file will beocme the master again, and this warning will be deleted.
+
+Meanwhile, use the online logbook entry editor to make changes.
+
+READTHIS
+-->                                        
+"""
+def writelogbook(year, filename, generate_on_view=False):
     """Writes all the database logbook entries into a new logbook.html file
     """
     current_expedition = Expedition.objects.get(year=year)
@@ -140,6 +164,9 @@ def writelogbook(year, filename):
             except:
                 print("   ! Very Bad Error opening " + endpath)
                 raise
+        if generate_on_view:
+            endmatter += READ_THIS
+
     except:
         print("   ! FAIL endpath " + endpath)
         raise