From d02b966d34da9ea298ef51cea91cc814493315b3 Mon Sep 17 00:00:00 2001
From: Bruno Frare <bruno.frare@tecsysbrasil.com.br>
Date: Thu, 28 May 2020 09:59:39 -0300
Subject: [PATCH] bug fix: #298 #240

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

diff --git a/djongo/models/fields.py b/djongo/models/fields.py
index 327de02..6f2033d 100644
--- a/djongo/models/fields.py
+++ b/djongo/models/fields.py
@@ -615,6 +615,9 @@ class ObjectIdFieldMixin:
     def rel_db_type(self, connection):
         return self.db_type(connection)
 
+    def get_prep_value(self, value):
+        return value
+
 
 class GenericObjectIdField(ObjectIdFieldMixin, Field):
     pass
-- 
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