Add autocomplete to the navigation bar in Rails Project - ruby-on-rails

Question

I'm running a Rails project which consists of Navgation bar on all the pages. I also have a input tag on the nav bar for searching purpose, but how to implement autocomplete in the particular search bar.
I tried using rails-jquery-autocomplete and implemented the way it asked but unfortunately it didn't worked for me. No search result are visible on screen or on console
brands_controller.rb
class Admin::BrandsController < Admin::AdminController
autocomplete :brand, :name
end
routes.rb
resources :brands, param: :uuid do
get :autocomplete_brand_name, :on => :collection
end
_navigationbar.html.erb
<form class="navbar-form pull-left" role="search">
<div class="form-group">
<input type="text" class="form-control search-bar" placeholder="Type here for search..." data-autocomplete="<%=autocomplete_brand_name_admin_brands_path%>">
</div>
</form>
Gemfile
gem 'rails', '~> 5.0.0'
gem 'rails-jquery-autocomplete'
gem 'jquery-rails'
application.js
//= require jquery
//= require jquery_ujs
//= require moltran/modernizr.min
//= require moltran/bootstrap.min
//= require tagsinput/jquery.tagsinput.min.js
//= require autocomplete-rails
Generated HTML:
<div class="form-group">
<input type="text" class="form-control search-bar" placeholder="Type here for search..." data-autocomplete="/admin/brands/autocomplete_brand_name">
</div>

Answer 1

You are missing //= require jquery-ui/autocomplete in application.js. Update application.js to
//= require jquery
//= require jquery_ujs
//= require moltran/modernizr.min
//= require moltran/bootstrap.min
//= require tagsinput/jquery.tagsinput.min.js
//= require jquery-ui/autocomplete
//= require autocomplete-rails
In your gemfile add
gem 'jquery-ui-rails'
Also replace input tag with
<%=autocomplete_field_tag 'search', '', autocomplete_brand_name_admin_brands_path %>