Update Counter Cache Job

update_counter_cache_job.rb

class UpdateCounterCacheJob < ApplicationJob attr_accessor :cache_columns
  def perform(key = 'all')
    self.cache_columns = counter_cache_hash
    if key == 'all'
      cache_columns.keys.each { |obj| update_cache_columns(obj) }
    else
      update_cache_columns(key)
    end
  end

  private

  def counter_cache_hash
    file_name = format('%s/config/counter_cache_columns.json', Rails.root)
    file = File.read(file_name)
    JSON.parse(file)
  end

  def update_cache_columns(key)
    model = key.camelize.constantize.base_class
    cache_columns[key].each do |col|
      model.find_each { |m| model.reset_counters(m.id, col) }
    end
  end
end