ajax-DELETEing an object from a tornado endpoint

ajax-DELETE.js

       var api_url = $.fn.adminURL() + '/gallery/remove/' +
         gallery_id + '.json';
      
       var values = {};

       $.ajax({
             url: api_url,
             // contentType: "application/json",
             //data: JSON.stringify(values),
             data: $.param(values),
             dataType: "text",
             type: "DELETE",
             headers: {
                'X-XSRFToken': $('input[name=_xsrf]').attr('value'),
             },
             

             success: function(data) {


                console.log("response = ", data);

               

             }, error: function(response) {
                console.log("ERROR:", response);
             }
          });