From 25ea23eb318ab414cb4e468498c02dc194a1fa63 Mon Sep 17 00:00:00 2001
From: Raphael Collet <rco@openerp.com>
Date: Mon, 5 Oct 2015 15:24:16 +0200
Subject: [PATCH] [FIX] models: when accessing function fields in multi, read
 them all at once

---
 openerp/models.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/openerp/models.py b/openerp/models.py
index 4f7c5dd795a..0b966bd2e36 100644
--- a/openerp/models.py
+++ b/openerp/models.py
@@ -3214,6 +3214,14 @@ class BaseModel(object):
                 if fcolumn._prefetch
                 if not fcolumn.groups or self.user_has_groups(fcolumn.groups)
             }
+        elif self._columns[field.name]._multi:
+            # prefetch all function fields with the same value for 'multi'
+            multi = self._columns[field.name]._multi
+            fnames = {fname
+                for fname, fcolumn in self._columns.iteritems()
+                if fcolumn._multi == multi
+                if not fcolumn.groups or self.user_has_groups(fcolumn.groups)
+            }
         else:
             fnames = {field.name}