在Rails中，如何在CSV文件中以毫秒为单位输出日期？

gem 'csv'

require 'csv'

def export_to_csv
  csv_file = "#{Rails.root}/public/export.csv"
  
  CSV.open(csv_file, 'w') do |csv|
    csv << ['Date']
    
    # 获取日期数据
    dates = YourModel.pluck(:created_at)
    
    # 将日期以毫秒为单位格式化并写入CSV文件
    dates.each do |date|
      csv << [date.strftime('%Y-%m-%d %H:%M:%S.%L')]
    end
  end
  
  send_file csv_file, filename: 'export.csv', type: 'text/csv'
end

get 'export_csv', to: 'your_controller#export_to_csv'