vierarb

var width  = 750;
var height = 500;
var radius = 200;
var strokeColor   = "#999";
var strokeOpacity = 0.75;
var labelMargin   = radius + 20;

var concentric = [];
for(var i = 1; i <= 10; i++) {
    concentric.push((radius * i) / 10);

vierarb

# Usage:
# coach = Coach.first
# coach.sessions_count(:started_at)
# coach.coachees_count(:created_at)
# coach.sessions_sum(:price, :started_at)

class Coach < ActiveRecord::Base
  include Metric

  metrics_for :sessions, :coachees

vierarb

class Speciality < ActiveRecord::Base
  validates :code, presence: true

  private
    def method_missing(method, *args, &block)
      if method.to_s =~ /^(.+)[?]$/
        run_code_comparation_method($1, *args, &block)
      else
        super
      end