From 8fdc9de9e901bde6d28460ae6860eb30f486a8da Mon Sep 17 00:00:00 2001
From: Stefan Strigler <stefan.strigler@emqx.io>
Date: Thu, 1 Jun 2023 18:55:37 +0200
Subject: [PATCH] fix: empty properties as empty map so it ends up as a json
 object

---
 apps/emqx_dashboard/src/emqx_dashboard_swagger.erl | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/apps/emqx_dashboard/src/emqx_dashboard_swagger.erl b/apps/emqx_dashboard/src/emqx_dashboard_swagger.erl
index 9f049e93f..f128513ba 100644
--- a/apps/emqx_dashboard/src/emqx_dashboard_swagger.erl
+++ b/apps/emqx_dashboard/src/emqx_dashboard_swagger.erl
@@ -965,7 +965,7 @@ to_bin(X) ->
 
 parse_object(PropList = [_ | _], Module, Options) when is_list(PropList) ->
     {Props, Required, Refs} = parse_object_loop(PropList, Module, Options),
-    Object = #{<<"type">> => object, <<"properties">> => Props},
+    Object = #{<<"type">> => object, <<"properties">> => fix_empty_props(Props)},
     case Required of
         [] -> {Object, Refs};
         _ -> {maps:put(required, Required, Object), Refs}
@@ -1035,6 +1035,11 @@ is_hidden(Hocon) ->
 is_required(Hocon) ->
     hocon_schema:field_schema(Hocon, required) =:= true.
 
+fix_empty_props([]) ->
+    #{};
+fix_empty_props(Props) ->
+    Props.
+
 content(ApiSpec) ->
     content(ApiSpec, undefined).