Allow to go back with applied costs.

This commit refs #11363
2020-01-14 12:00:04 +01:00 · 2020-01-14 12:00:04 +01:00 · 0e2b70bbc4
parent 1fa40e5a35
commit 0e2b70bbc4
1 changed files with 4 additions and 0 deletions
--- a/sale_cost.py
+++ b/sale_cost.py
@ -54,3 +54,7 @@ class SaleCost(ApplyMethodCostDocumentMixin, metaclass=PoolMeta):
            invisible_condition,
            Not(Bool(Eval('invoice_lines'))))
        cls._buttons['unapply']['depends'].append('invoice_lines')
+
+    @property
+    def non_explodable(self):
+        return super().non_explodable or bool(self.invoice_lines)