Method to reindex sunspot model with progress bar. You just need to add it to any of your models.

sunspot_reindex.rb

  def self.reindex!
    model_name      = self.name.to_s
    total           = self.count
    indexed         = 0.to_f
    progress        = 0.to_f
    row_length      = 100.to_f
    log_level       = Sunspot::Rails::LogSubscriber.logger.level
    time_start      = Time.now
    each_second     = Time.now
    per_second      = 0
    per_second_out  = 0

    #Turn logs off
    old_logger                = ActiveRecord::Base.logger
    ActiveRecord::Base.logger = nil

    puts "[SOLR] Start indexing #{model_name}"
    Sunspot::Rails::LogSubscriber.logger.level  = 4
    self.find_in_batches(batch_size: 100) do |group|

      group.each do |entry|

        entry.index
        indexed += 1
        progress = (indexed.to_f / total.to_f * 100.to_f)
        line     = '=' * (row_length / 100 * progress).to_i
        space    = ' ' * (row_length - line.length.to_f).to_i
        printf "[SOLR] Indexing #{indexed.to_i}/#{total} [#{line}>#{space}] #{per_second_out}/sec\r"

        if (Time.now - each_second) > 1.to_f
          each_second     = Time.now
          per_second_out  = per_second
          per_second      = 0
        else
          per_second += 1
        end
      end

    end
    time_end  = Time.now

    puts "\n\r[SOLR] Indexing of #{model_name.pluralize} done [#{indexed.to_i} #{model_name.pluralize.downcase}] in #{time_end - time_start}"
    Sunspot::Rails::LogSubscriber.logger.level  = log_level
    ActiveRecord::Base.logger                   = old_logger
    nil
  end

(Y)