Post Model

gistfile1.rb

def reindex

    # import data from DB Model

    Tire.index 'posts' do
      delete
      create
    end

    Post.select('id, title, url, created_at, feed_author, feed_location,
                 feed_summary, feed_timestamp, updated_at, converted_text,
                 language').includes('feeds').import :per_page => 1000
 end

Model.rb

class Post  < ActiveRecord::Base

  include Tire::Model::Search
  include Tire::Model::Callbacks

  mapping do
    indexes :id,                    :index    => :not_analyzed
    indexes :title,                 :analyzer => 'snowball', :boost => 3
    indexes :url,                   :analyzer => 'url'
    indexes :created_at,            :type => 'date', :include_in_all => false
    #indexes :content_raw,           :index    => :not_analyzed
    #indexes :title_sha1,            :index    => :not_analyzed
    indexes :feed_author,           :analyzer => 'keyword'
    indexes :feed_location,         :analyzer => 'keyword'
    indexes :feed_summary,          :analyzer => 'snowball', :boost => 2
    indexes :feed_timestamp,        :type => 'date', :include_in_all => false
    indexes :updated_at,            :type => 'date', :include_in_all => false
    indexes :converted_text,        :analyzer => 'snowball'
    #indexes :converted_text_sha1,   :index    => :not_analyzed
    #indexes :converted_html,        :index    => :not_analyzed
    indexes :language,              :analyzer => 'keyword'
    # why doesn't this work ?
    #indexes :converted_text_size,   :type => 'integer', :as       => 'converted_text.size'
  end

  def to_indexed_json
    to_json(methods: [:feed_id, :converted_text_size])
  end

  def feed_id
    feeds.first.id
  end

  def converted_text_size
    converted_text.size
  end

  has_and_belongs_to_many :feeds, :join_table => "feed_posts"

...
}