CODEWITHSUNDEEP
rubyclasscsv
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Reputation:

Loading CSV values to a Ruby class

I'm new to Ruby, just learning to use it since last night. As my first task I set for myself, I'd like to load a CSV file to an array of Car objects I created.

class Car
  attr_accessor :year, :make, :model, :length

  def initializer(year, make, model, length)
    @year = year
    @make = make
    @model = model
    @length = length
  end

  def to_s
    "Year: #{@year} | Make: #{@make} | Model: #{@model} | Length: #{@length}"
  end
end

require 'csv'

data = CSV.read('/home/stapiagutierrez/Desktop/Pickaxe/cars.csv')
puts data[1]

How can I iterate through the data collection and load each row of values into a new Car object? Thank you for the suggestions.

Upvotes: 0

Views: 2815

Answers (1)

wersimmon
wersimmon

Reputation: 2869

Assuming each car is on it's own line:

path = '/home/stapiagutierrez/Desktop/Pickaxe/cars.csv'
cars = CSV.read(path).collect{ |row| Car.new *row }

The * in *row is a "splat" operator, which tells Ruby to take an array and turn it into individual arguments. It can do the opposite and turn multiple arguments into an array, as well; see Programming Ruby on Variable-Length Argument Lists.

Upvotes: 3

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