From d9d0939869ed0883099ea0c64334a879e7e3cd63 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nicolas=20=C3=89vrard?= <nicoe@b2ck.com>
Date: Sat, 31 Aug 2019 00:53:20 +0200
Subject: [PATCH] Do not send empty x2Many fields when saving

issue8588
review264091002
---
 proteus/__init__.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/proteus/__init__.py b/proteus/__init__.py
index 24fafa62c4..8dd32752b2 100644
--- a/proteus/__init__.py
+++ b/proteus/__init__.py
@@ -111,6 +111,8 @@ class FieldDescriptor(object):
         return instance._values.get(self.name, self.default)
 
     def __set__(self, instance, value):
+        if self.definition.get('readonly'):
+            raise AttributeError
         if instance.id > 0:
             instance._read(self.name)
         previous = getattr(instance, self.name)