[ADD] New module <stock_quant_merge> closes #693

First upload, merge quants

models/__init__.py

@@ -0,0 +1,6 @@
+# -*- encoding: utf-8 -*-
+##############################################################################
+# For copyright and license notices, see __openerp__.py file in root directory
+##############################################################################
+
+from . import stock

models/stock.py

@@ -0,0 +1,29 @@
+# -*- encoding: utf-8 -*-
+##############################################################################
+# For copyright and license notices, see __openerp__.py file in root directory
+##############################################################################
+
+from openerp import models, api
+
+
+class StockQuant(models.Model):
+    _inherit = 'stock.quant'
+
+    @api.one
+    def merge_stock_quants(self):
+        if not self.reservation_id:
+            quants = self.search(
+                [('id', '!=', self.id),
+                 ('product_id', '=', self.product_id.id),
+                 ('lot_id', '=', self.lot_id.id),
+                 ('package_id', '=', self.package_id.id),
+                 ('location_id', '=', self.location_id.id),
+                 ('reservation_id', '=', False),
+                 ('propagated_from_id', '=', False)])
+            qty = cost = 0
+            for quant in quants:
+                qty += quant.qty
+                cost += quant.cost
+                quant.unlink()
+            self.cost += cost
+            self.qty += qty