Rails Model to CSV and back

rails_model_to_csv_and_back.rb

require "csv"
headers = %w[identifier address other]
model = Model

CSV.open("model_export.csv", "wb") do |csv|
  csv << headers
  model.select(*headers).find_each do |row|
    csv << row.attributes.except("id").values
  end
end

CSV.foreach("model_export.csv", headers: true) do |row|
  record = model.find_by(identifier: identifier)
  next unless record
  
  record.update_columns(row.to_h)
end