[date2date] : fix no 'date_from' in context.

[burette/remembership.git] / remembership.py

diff --git a/remembership.py b/remembership.py
index 48b1b45..849afcf 100644 (file)
--- a/remembership.py
+++ b/remembership.py
@@ -249,7 +249,10 @@ class account_invoice_line(osv.osv):
                 date_from = member_line.date_from
                 date_to   = member_line.date_to
                 if line.product_id.membership_date2date:
-                    date_from = context['date_from'] and datetime.strptime(context['date_from'], "%Y-%m-%d") or date.today()
+                    date_from = ('date_from' in context
+                      and context['date_from']
+                      and datetime.strptime(context['date_from'], "%Y-%m-%d")
+                      or date.today())
                     date_to   = date_from + relativedelta(months = +12) # TODO: parameterize this delta?
                     date_from = date_from.strftime("%Y-%m-%d")
                     date_to   = date_to  .strftime("%Y-%m-%d")