turbolinks_put.js

// require materialize.css

$(document).on('turbolinks:load', function() {
  $('.update_form .regular').on('focusout', event => $('.update_form').trigger('submit'));

  $('.update_form').on('submit', e => {
    $.ajax(e.target.action, {
        type: 'PUT',
        dataType: 'json',
        data: $(".update_form").serialize(),
        success(data, text, jqXHR) {
          return M.toast({html: 'Form updated', displayLength: 4000, classes: 'green darken-1' });
        },
        error(jqXHR, textStatus, errorThrown) {
          return M.toast({html: 'Form not updated', displayLength: 4000, classes: 'red darken-1' });
        }
      }
    );
    return false;
  });
});