update CORS expose_headers param with etag

marshmallow-code · Sep 18, 2017 · 0ddab16 · 0ddab16
1 parent f004486
commit 0ddab16
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/flask_rest_api/__init__.py b/flask_rest_api/__init__.py
@@ -35,7 +35,10 @@ def init_app(self, app):
 
         # CORS is setup the most permissive way, to avoid cross-origin
         # issues when serving the spec or trying it using swagger-ui.
-        CORS(app)
+        expose_headers = []
+        if is_etag_enabled(app):
+            expose_headers.append('Etag')
+        CORS(app, expose_headers=expose_headers)
 
         # Can't register a handler for HTTPException, so let's register
         # default handler for each code explicitly.