special characters ñ or áéíóú and multi-word facets about elasticsearch_autocomplete HOT 3 CLOSED

class User
  include Mongoid::Document
  field :city, :type => String
  has_one: car
end

class Car
  include Mongoid::Document
  ac_field :name, :user_city, :skip_settings => true

  belongs_to: user
  field: :name, :type => String

  def ac_self.search(param)
    tire.ac_search :load => true do
    query do
      boolean do
        must { term :user_city, params[:user_city] } if params[:user_city].present?
      end
    end
    filter :term, user_city: params[:user_city] if params[:user_city].present?
    facet "cities" do
      terms :user_city
    end
  end

  def to_indexed_json
    to_json(methods: [:user_city])
  end

  def user_city
   user.city
  end

end

 <% @cars.facets['cities']['terms'].each do |facet| %>
  <li>
    <%= link_to_unless_current Car.find_or_initialize_by(city: facet['term']).city, params.merge(user_city: facet['term']) %>
    <% if params[:car_city] == facet['term'].to_s %>
     (<%= link_to "Remove", params.merge(car_city: nil) %>)
    <% else %>
      (<%= facet['count'] %>)
    <% end %>
  </li>
<% end %>

model = self
  settings ElasticsearchAutocomplete::Analyzers::AC_BASE do
    mapping _source: {enabled: true, includes: %w(car_city name)} do
      indexes :car_city, :type => 'string', :index => :not_analyzed 
    end
  end