From 5f9c8ced24ac1c8a65c04f745ad2ea3bb1125c99 Mon Sep 17 00:00:00 2001
From: Ivan Yelizariev <yelizariev@it-projects.info>
Date: Tue, 24 Apr 2018 15:08:54 +0000
Subject: [PATCH] [FIX] base: keep mimetypes after force_storage

The write override recomputed the mimetype when changing the datas
It may give a different result

closes odoo/odoo#24397

Signed-off-by: Martin Trigaux (mat) <mat@odoo.com>
---
 odoo/addons/base/models/ir_attachment.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/odoo/addons/base/models/ir_attachment.py b/odoo/addons/base/models/ir_attachment.py
index a58ba54c448..4ccdc29b184 100644
--- a/odoo/addons/base/models/ir_attachment.py
+++ b/odoo/addons/base/models/ir_attachment.py
@@ -65,7 +65,8 @@ class IrAttachment(models.Model):
         }[self._storage()]
 
         for attach in self.search(domain):
-            attach.write({'datas': attach.datas})
+            # pass mimetype, to avoid recomputation
+            attach.write({'datas': attach.datas, 'mimetype': attach.mimetype})
         return True
 
     @api.model