[ENH] invoice plane, change advance deduction to always 1 qty

Author: kittiu

Diff for: purchase_invoice_plan/models/purchase.py

@@ -253,14 +253,11 @@ def compute_advance_payment_line(self, inv_id):
                 for preline in advance.invoice_line:
                     ratio = (order.amount_untaxed and
                              (invoice.amount_untaxed /
-                              order.amount_untaxed) or
-                             1.0)
+                              order.amount_untaxed) or 1.0)
                     inv_line = preline.copy(
                         {'invoice_id': inv_id,
-                         'price_unit': -1 *
-                            preline.price_unit})
-                    inv_line.quantity = \
-                        inv_line.quantity * ratio
+                         'price_unit': -preline.price_unit * ratio})
+                    inv_line.quantity = 1.0
         invoice.button_compute()
         return True
 

Diff for: sale_invoice_plan/models/sale.py

@@ -296,8 +296,8 @@ def _make_invoice(self, order, lines):
                                   order.amount_untaxed) or 1.0)
                         inv_line = preline.copy(
                             {'invoice_id': inv_id,
-                             'price_unit': -preline.price_unit})
-                        inv_line.quantity = inv_line.quantity * ratio
+                             'price_unit': -preline.price_unit * ratio})
+                        inv_line.quantity = 1.0
             invoice.button_compute()
         return inv_id