From 2ebd4797595fb86504cf093fe8ed94c59a061acb Mon Sep 17 00:00:00 2001
From: Craig Anderson <craiga@craiga.id.au>
Date: Fri, 20 Apr 2018 14:32:37 +0100
Subject: [PATCH] Allow hashing of ErrorDetail to fix #5919 (#5932)

---
 rest_framework/exceptions.py | 3 +++
 tests/test_exceptions.py     | 4 ++++
 2 files changed, 7 insertions(+)

diff --git a/rest_framework/exceptions.py b/rest_framework/exceptions.py
index 3c64386da..f79b16129 100644
--- a/rest_framework/exceptions.py
+++ b/rest_framework/exceptions.py
@@ -91,6 +91,9 @@ class ErrorDetail(six.text_type):
             self.code,
         ))
 
+    def __hash__(self):
+        return hash(str(self))
+
 
 class APIException(Exception):
     """
diff --git a/tests/test_exceptions.py b/tests/test_exceptions.py
index 0c5ff7aae..ce0ed8514 100644
--- a/tests/test_exceptions.py
+++ b/tests/test_exceptions.py
@@ -81,6 +81,10 @@ class ErrorDetailTests(TestCase):
         assert str(ErrorDetail('msg1')) == 'msg1'
         assert str(ErrorDetail('msg1', 'code')) == 'msg1'
 
+    def test_hash(self):
+        assert hash(ErrorDetail('msg')) == hash('msg')
+        assert hash(ErrorDetail('msg', 'code')) == hash('msg')
+
 
 class TranslationTests(TestCase):