[grouped] [date2date] : fix : account_invoice_line : write : date_from.

[burette/remembership.git] / remembership.py

diff --git a/remembership.py b/remembership.py
index 999f8c8..b88034f 100644 (file)
--- a/remembership.py
+++ b/remembership.py
@@ -182,7 +182,10 @@ 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")