Улучшение безопасности и обработки ошибок. Этап 2. #8

src/handlers/admin/admin_handler_ticket_stats.erl

@@ -31,8 +31,13 @@ auth_admin(Req) ->
   end.
 
 send_json(Req, Status, Data) ->
+  Headers = #{
+    <<"content-type">> => <<"application/json">>,
+    <<"access-control-allow-origin">> => <<"*">>,
+    <<"access-control-expose-headers">> => <<"Content-Range">>
+  },
   Body = jsx:encode(Data),
-  cowboy_req:reply(Status, #{<<"content-type">> => <<"application/json">>}, Body, Req),
+  cowboy_req:reply(Status, Headers, Body, Req),
   {ok, Body, []}.
 
 send_error(Req, Status, Message) ->