Service Objects

Simple example on how to implement the typical .call interface for plain ruby service objects.

class User
  def greet
    Greeter.call(name)
  end
end

Sometimes you need to pull out a color from an image. This could be for a placeholder, for a background, or for any other use. Often the "most common" color from an image is going to be shades of grey or brown – not the most exciting color to expand on....

class ColorExtractor
  attr_accessor :source_url

  DEFAULT_COLOR = '#4338CA'.freeze # indigo-700