From c341799344ab394322a589ce44328f245910e651 Mon Sep 17 00:00:00 2001
From: Tom Christie <tom@tomchristie.com>
Date: Thu, 18 Oct 2012 22:19:54 +0100
Subject: [PATCH] Apply readonly on RelatedField

---
 rest_framework/fields.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rest_framework/fields.py b/rest_framework/fields.py
index 663a168df..162eed260 100644
--- a/rest_framework/fields.py
+++ b/rest_framework/fields.py
@@ -224,6 +224,9 @@ class RelatedField(WritableField):
         return self.to_native(value)
 
     def field_from_native(self, data, field_name, into):
+        if self.readonly:
+            return
+
         value = data.get(field_name)
         into[(self.source or field_name) + '_id'] = self.from_native(value)