Data extraction

data_extraction.rake

require "csv"

namespace :extract_hoge do
  desc 'Data extraction'
  task extraction: :environment do
    p 'start task'
    hoges = Hoge.all.order(id: :asc)
    CSV.open('path/to/hoge.csv','w') do |row|
      hoges.each do |hoge|
        row << [ hoge.id, hoge.name, hoge.tel ] if hoge.tel.present?
      end
    end
    p 'done task'
  end
end