Add undocumented "return=none" preference

src/PostgREST/OpenAPI.hs

@@ -148,9 +148,13 @@ makeGetParams cs =
   , makePreferParam ["plurality=singular", "count=none"]
   ]
 
+makeReturnPreferenceParam :: Param
+makeReturnPreferenceParam =
+  makePreferParam ["return=representation", "return=minimal", "return=none"]
+
 makePostParams :: Text -> [Param]
 makePostParams tn =
-  [ makePreferParam ["return=representation", "return=minimal"]
+  [ makeReturnPreferenceParam
   , (mempty :: Param)
     & name        .~ "body"
     & description ?~ tn
@@ -160,7 +164,7 @@ makePostParams tn =
 
 makeDeleteParams :: [Param]
 makeDeleteParams =
-  [ makePreferParam ["return=representation", "return=minimal"] ]
+  [ makeReturnPreferenceParam ]
 
 makePathItem :: (Table, [Column], [Text]) -> (FilePath, PathItem)
 makePathItem (t, cs, _) = ("/" ++ unpack tn, p $ tableInsertable t)