Função delete do rails em jQuery

delete-rails.js

$('a[data-method="delete"]').click(function(event) {
  csrf_param = $('meta[name=csrf-param]').attr('content');
  csrf_token = $('meta[name=csrf-token]').attr('content');
  if (confirm($(this).attr("data-confirm"))) {
    var attr = {};
    attr['_method'] = 'delete';
    attr[csrf_param] = csrf_token;
    $.post(this.href, attr, function() { location.reload(true) }, "script");
  }
  return false;
});