Autocompletion does not work. I have followed every step in this guide https://github.com/ankane/searchkick, but no luck.

_post.html.erb

# views/posts/_post.html.erb

<% @posts.sort_by(&:created_at).reverse.each do |p| %>
<div class="panel panel-default">
 ......
</div>
<% end %>

_search.html.erb

# views/posts/_search.html.erb

<%= form_tag("/users", method: "get", :html => { :class => "form-control"}) do %>
    <%= text_field_tag :query, params[:query], :placeholder => "Søg", :class => "form-control", id: "post_search", autocomplete: "off" %>
<% end %>

post.rb

class Post < ActiveRecord::Base
    searchkick autocomplete: ['title']
    belongs_to :user

    has_attached_file :photo, :styles => { :medium => "300x300>", :thumb => "100x100>" }, :default_url => "/images/:style/missing.png"
end

posts.js.coffee

# app/assets/javascripts/posts.js.coffee
$ ->
  $("#post_search").typeahead({
    name: "post"
    remote: "/posts/autocomplete?query=%QUERY"
  });

posts_controller.rb

    def autocomplete
        render json: Post.search(params[:query], autocomplete: true, limit: 10).map(&:title)
    end