Contents

class Gutentag::Dirty
  def self.call(instance, tag_names)
    new(instance, tag_names).call
  end

  def initialize(instance, tag_names)
    @instance, @tag_names = instance, tag_names
  end

  def call
    instance.changed_attributes[:tag_names] = existing if changes.present?
  end

  private

  attr_reader :instance, :tag_names

  def changes
    (existing + tag_names).uniq - (existing & tag_names)
  end

  def existing
    instance.tag_names
  end
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
gutentag-0.9.0	lib/gutentag/dirty.rb
gutentag-0.8.0	lib/gutentag/dirty.rb
gutentag-0.7.0	lib/gutentag/dirty.rb
gutentag-0.6.0	lib/gutentag/dirty.rb
gutentag-0.5.1	lib/gutentag/dirty.rb