From 538ffaf6c71944aa4f0d77f1167c2cef570dabe1 Mon Sep 17 00:00:00 2001
From: Tom Christie <tom@tomchristie.com>
Date: Tue, 14 Jul 2015 11:13:26 +0100
Subject: [PATCH] Store self.action='metadata' for OPTIONS requests on
 viewsets. Closes #3115.

---
 rest_framework/viewsets.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/rest_framework/viewsets.py b/rest_framework/viewsets.py
index e1c5e17f61..819deb430f 100644
--- a/rest_framework/viewsets.py
+++ b/rest_framework/viewsets.py
@@ -83,6 +83,12 @@ def view(request, *args, **kwargs):
             if hasattr(self, 'get') and not hasattr(self, 'head'):
                 self.head = self.get
 
+            # Explicitly map `options` requests to an (implicit) action named
+            # 'metadata'. This action doesn't actually exist as a named method,
+            # because, unlike other methods, we always route to it.
+            if hasattr(self, 'options'):
+                self.action_map['options'] = 'metadata'
+
             # And continue as usual
             return self.dispatch(request, *args, **kwargs)