elasticsearch-rails/lib/rails/templates/searchable.dsl.rb [18:82]:
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module Searchable
  extend ActiveSupport::Concern

  included do
    include Elasticsearch::Model

    # Customize the index name
    #
    index_name [Rails.application.engine_name, Rails.env].join('_')

    # Set up index configuration and mapping
    #
    settings index: { number_of_shards: 1, number_of_replicas: 0 } do
      mapping do
        indexes :title, type: 'text' do
          indexes :title,     analyzer: 'snowball'
          indexes :tokenized, analyzer: 'simple'
        end

        indexes :content, type: 'text'  do
          indexes :content,   analyzer: 'snowball'
          indexes :tokenized, analyzer: 'simple'
        end

        indexes :published_on, type: 'date'

        indexes :authors do
          indexes :full_name, type: 'text' do
            indexes :full_name
            indexes :raw, type: 'keyword'
          end
        end

        indexes :categories, type: 'keyword'

        indexes :comments, type: 'nested' do
          indexes :body, analyzer: 'snowball'
          indexes :stars
          indexes :pick
          indexes :user, type: 'keyword'
          indexes :user_location, type: 'text' do
            indexes :user_location
            indexes :raw, type: 'keyword'
          end
        end
      end
    end

    # Set up callbacks for updating the index on model changes
    #
    after_commit lambda { Indexer.perform_async(:index,  self.class.to_s, self.id) }, on: :create
    after_commit lambda { Indexer.perform_async(:update, self.class.to_s, self.id) }, on: :update
    after_commit lambda { Indexer.perform_async(:delete, self.class.to_s, self.id) }, on: :destroy
    after_touch  lambda { Indexer.perform_async(:update, self.class.to_s, self.id) }

    # Customize the JSON serialization for Elasticsearch
    #
    def as_indexed_json(options={})
      hash = self.as_json(
        include: { authors:    { methods: [:full_name], only: [:full_name] },
                   comments:   { only: [:body, :stars, :pick, :user, :user_location] }
                 })
      hash['categories'] = self.categories.map(&:title)
      hash
    end
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elasticsearch-rails/lib/rails/templates/searchable.rb [18:82]:
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module Searchable
  extend ActiveSupport::Concern

  included do
    include Elasticsearch::Model

    # Customize the index name
    #
    index_name [Rails.application.engine_name, Rails.env].join('_')

    # Set up index configuration and mapping
    #
    settings index: { number_of_shards: 1, number_of_replicas: 0 } do
      mapping do
        indexes :title, type: 'text' do
          indexes :title,     analyzer: 'snowball'
          indexes :tokenized, analyzer: 'simple'
        end

        indexes :content, type: 'text'  do
          indexes :content,   analyzer: 'snowball'
          indexes :tokenized, analyzer: 'simple'
        end

        indexes :published_on, type: 'date'

        indexes :authors do
          indexes :full_name, type: 'text' do
            indexes :full_name
            indexes :raw, type: 'keyword'
          end
        end

        indexes :categories, type: 'keyword'

        indexes :comments, type: 'nested' do
          indexes :body, analyzer: 'snowball'
          indexes :stars
          indexes :pick
          indexes :user, type: 'keyword'
          indexes :user_location, type: 'text' do
            indexes :user_location
            indexes :raw, type: 'keyword'
          end
        end
      end
    end

    # Set up callbacks for updating the index on model changes
    #
    after_commit lambda { Indexer.perform_async(:index,  self.class.to_s, self.id) }, on: :create
    after_commit lambda { Indexer.perform_async(:update, self.class.to_s, self.id) }, on: :update
    after_commit lambda { Indexer.perform_async(:delete, self.class.to_s, self.id) }, on: :destroy
    after_touch  lambda { Indexer.perform_async(:update, self.class.to_s, self.id) }

    # Customize the JSON serialization for Elasticsearch
    #
    def as_indexed_json(options={})
      hash = self.as_json(
        include: { authors:    { methods: [:full_name], only: [:full_name] },
                   comments:   { only: [:body, :stars, :pick, :user, :user_location] }
                 })
      hash['categories'] = self.categories.map(&:title)
      hash
    end
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