belt and braces prevent bad lbe ids

core/views/uploads.py

@@ -306,7 +306,8 @@ def logbookedit(request, year=None, slug=None):
             place = request.POST["place"].strip().replace(' - ',' = ')  # no hyphens !
             title = request.POST["title"].strip()   
             entry = request.POST["text"].strip() 
-            slug = request.POST["slug"].strip() 
+            if "slug" in request.POST:
+                slug = request.POST["slug"].strip() # if we are re-editing the same entry again
             entry = entry.replace('\r','') # remove HTML-standard CR inserted from form.
             entry = entry.replace('\n\n','\n<p>\n') # replace 2 \n  with <br><br>
             # entry = entry.replace('\n\n','\n<br />\n<br />\n') # replace 2 \n  with <br><br>
@@ -334,7 +335,7 @@ def logbookedit(request, year=None, slug=None):
                 authorflag = True
                 print(f"! Unrecognised author: {author}")
             
-            
+            # slug is set either because we already posted or because it was specified inthe url
             if not slug:
                 # Creating a new logbook entry with all the gubbins
                 slug = create_new_lbe_slug(date)