Writing Object to CSV

multiple_objects.rb

require 'csv'

# A class and object of some sort.
# (Ignore the OpenStruct thing; I'm being lazy when I'm making my example objects.)
require 'ostruct'
class Car < OpenStruct(:name, :made_in)
end

cars = [
  Car.new(name: "Shitbox Mazda", made_in: 1992),
  Car.new(name: "Shiny Electric Thing", made_in: 2013),
]

### Actually doing the CSV thing ###

# Opening "cars.csv", in the current directory, for [w]riting:
CSV.open('./cars.csv', 'w') do |csv|
  # For all the cars:
  cars.each do |car|
    # Add a new row, with these fields in order:
    csv << [
      car.name,
      car.made_in,
    ]
  end
end

one_object.rb

require 'csv'

# A class and object of some sort.
class Car
  attr_accessor :name, :made_in
end
object = Car.new
object.name = "Shitbox Mazda"
object.made_in = 1992

### Actually doing the CSV thing ###

# Opening "cars.csv", in the current directory, for [w]riting:
CSV.open('./cars.csv', 'w') do |csv|
  # Add a new row, with these fields in order:
  csv << [
    object.name,
    object.made_in,
  ]
end