steem_percentage.rb

steem_percentage.rb

module SteemPercentage
  extend ActiveSupport::Concern

  STEEM_MAX_PERCENT = 10000.0

  # converts to [0.0-1.0] => percent_decimal(8000) == 0.8
  def percent_decimal(num)
    num.to_f / STEEM_MAX_PERCENT
  end

  # converts to [0.0-100.0] => percent(8000) == 80.0
  def percent(num)
    percent_decimal(num) * 100.0
  end

  # converts to % format => percent_str(8000) == '80.0%'
  def percent_str(num, precision=1)
    "#{number_with_precision(percent(num), precision)}%"
  end

end