avoid ZeroDivisionError in TradeModelSolver.

f303b3ce · Kazuhiko Shiozaki · d642ab37 · f303b3ce
Commit f303b3ce authored Jul 27, 2011 by Kazuhiko Shiozaki
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product/ERP5/Document/TradeModelSolver.py product/ERP5/Document/TradeModelSolver.py +4 -1

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--- a/product/ERP5/Document/TradeModelSolver.py
+++ b/product/ERP5/Document/TradeModelSolver.py
@@ -129,7 +129,10 @@ class TradeModelSolver(AcceptSolver):
          movement.setQuantity(total_quantity)
          for simulation_movement in simulation_movement_list:
            quantity = simulation_movement.getQuantity()
-            delivery_ratio = quantity / total_quantity
+            if total_quantity != 0.0:
+              delivery_ratio = quantity / total_quantity
+            else:
+              delivery_ratio = 1.0 / len(simulation_movement_list)
            delivery_error = total_quantity * delivery_ratio - quantity
            simulation_movement.edit(delivery_ratio=delivery_ratio,
                                     delivery_error=delivery_error,