How to update content with ajax on user authorization via devise?

Question

Ruby on Rails

There is such a design on the main page, how to make it update with ajax during authorization, authorization through Devise

<% if current_user %>
              <li><a><%= "Hello, #{current_user.fullname}" %></a></li>
              <li><%= link_to "Sign out", destroy_user_session_path, :method => :delete %></li>
          <% else %>
          <li><a href="#create_user_modal" class="modal_fancy">Регистрация</a></li>
          <li><a href="#login_modal" class="modal_fancy">Вход</a></li>
          <% end %>

jquery error handling via json

$("#login ").bind("ajax:success", function(event, xhr, settings){
     
    });

class SessionsController < Devise::SessionsController
  respond_to :html, :json
end

Ruby 2.2
Rails 5.0

Answer 1

https://hackhands.com/sign-users-ajax-using-devise...