Fetch business price range from Yelp

yelp.rb

require 'faraday'

module Yelp
  PRICE_RANGE_REGEX = /<span id="price_tip" \b[^>]*>(.*?)<\/span>/i
  
  def self.restaurant_price_range(id)
    url = "http://www.yelp.com/biz/#{id}"
    body = Faraday.get(url).body
    body.scan(PRICE_RANGE_REGEX).flatten.first.to_s.length
  end
end