[IMP] contract_variable_quantity: Recompute price when changing qty

If you have contract lines with automatic price and your pricelist
contains different prices per quantity, the price is not changed
when computing quantity.

This PR fixes this.

contract/__manifest__.py

@@ -1,5 +1,5 @@
 # Copyright 2004-2010 OpenERP SA
-# Copyright 2014-2017 Tecnativa - Pedro M. Baeza
+# Copyright 2014-2018 Tecnativa - Pedro M. Baeza
 # Copyright 2015 Domatix
 # Copyright 2016-2018 Tecnativa - Carlos Dauden
 # Copyright 2017 Tecnativa - Vicent Cubells
@@ -8,7 +8,7 @@
 
 {
     'name': 'Contracts Management - Recurring',
-    'version': '11.0.2.0.1',
+    'version': '11.0.2.0.2',
     'category': 'Contract Management',
     'license': 'AGPL-3',
     'author': "OpenERP SA, "

contract/models/account_analytic_invoice_line.py

@@ -3,7 +3,7 @@
 # Copyright 2014 Angel Moya <angel.moya@domatix.com>
 # Copyright 2016 Carlos Dauden <carlos.dauden@tecnativa.com>
 # Copyright 2016-2017 LasLabs Inc.
-# Copyright 2015-2017 Tecnativa - Pedro M. Baeza
+# Copyright 2015-2018 Tecnativa - Pedro M. Baeza
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 
 from dateutil.relativedelta import relativedelta
@@ -98,7 +98,9 @@ class AccountAnalyticInvoiceLine(models.Model):
         for line in self:
             if line.automatic_price:
                 product = line.product_id.with_context(
-                    quantity=line.quantity,
+                    quantity=line.env.context.get(
+                        'contract_line_qty', line.quantity,
+                    ),
                     pricelist=line.analytic_account_id.pricelist_id.id,
                     partner=line.analytic_account_id.partner_id.id,
                     date=line.env.context.get('old_date', fields.Date.today()),

contract_variable_quantity/__manifest__.py

@@ -1,10 +1,10 @@
-# Copyright 2016 Tecnativa - Pedro M. Baeza
+# Copyright 2016-2018 Tecnativa - Pedro M. Baeza
 # Copyright 2018 Tecnativa - Carlos Dauden
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 
 {
     'name': 'Variable quantity in contract recurrent invoicing',
-    'version': '11.0.1.2.0',
+    'version': '11.0.1.2.1',
     'category': 'Contract Management',
     'license': 'AGPL-3',
     'author': "Tecnativa,"

contract_variable_quantity/models/contract.py

@@ -38,6 +38,10 @@ class AccountAnalyticAccount(models.Model):
                 vals = {}
             else:
                 vals['quantity'] = qty
+                # Re-evaluate price with this new quantity
+                vals['price_unit'] = line.with_context(
+                    contract_line_qty=qty,
+                ).price_unit
         return vals