Fix broken validity detection on param-free /balance.

diff --git a/src/ledgplom/http.py b/src/ledgplom/http.py
index 9a10efb048e75928730d91ff2879a459464cebde..b1734f5903e0bff8fb5da51aba76e170428c90f7 100644 (file)
--- a/src/ledgplom/http.py
+++ b/src/ledgplom/http.py
@@ -130,7 +130,8 @@ class _Handler(PlomHttpHandler):
 
     def get_balance(self, ctx) -> None:
         """Display tree of calculated Accounts over .bookings[:up_incl+1]."""
-        id_ = int(self.params.first('up_incl') or '-1')
+        id_ = int(self.params.first('up_incl')
+                  or str(len(self.server.ledger.bookings) - 1))
         roots = [ac for ac in self.server.ledger.accounts.values()
                  if not ac.parent]
         ctx['roots'] = sorted(roots, key=lambda r: r.basename)