From ccfc4e7026e2ab03a2adda526f890ca810e0da70 Mon Sep 17 00:00:00 2001
From: Richard Mathot <rim@odoo.com>
Date: Tue, 29 Aug 2017 12:28:41 +0200
Subject: [PATCH] [FIX] mrp: optimize computation of field "# Manufacturing
 Orders"

---
 addons/mrp/product.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/addons/mrp/product.py b/addons/mrp/product.py
index 41e6d0a9049..13f54e711ba 100644
--- a/addons/mrp/product.py
+++ b/addons/mrp/product.py
@@ -46,11 +46,12 @@ class product_template(osv.osv):
 
 class product_product(osv.osv):
     _inherit = "product.product"
+
     def _bom_orders_count(self, cr, uid, ids, field_name, arg, context=None):
         Production = self.pool('mrp.production')
-        res = {}
-        for product_id in ids:
-            res[product_id] = Production.search_count(cr,uid, [('product_id', '=', product_id)], context=context)
+        res = dict.fromkeys(ids, 0)
+        for g in Production.read_group(cr, uid, [('product_id', 'in', ids)], ['product_id'], ['product_id'], context=context):
+            res[g['partner_id'][0]] = g['partner_id_count']
         return res
 
     _columns = {