class TimeField def initialize(options = {}) @options = options @options[:format] = 'hh?:mm:SS' unless options[:format] @options[:regexp] = build_regexp(options[:format]) unless options[:regexp] end def build_regexp(format) s = '^' + Regexp.escape(format) + '$' s.gsub!('hh\?', '(?\d*?)') s.gsub!(':', ':?') s.gsub!('-', '-?') s.gsub!('_', '_?') s.gsub!('HH', '(?\d*?)') s.gsub!('hh', '(?\d*?)') s.gsub!('MM', '(?\d*)') s.gsub!('mm', '(?\d*)') s.gsub!('SS', '(?\d*)') Regexp.new(s) end def parse(value) if value.blank? nil else match = @options[:regexp].match(value) if match.nil? nil else seconds = 0 names = match.names seconds += match['s'].to_i if names.include?('s') seconds += match['m'].to_i * 60 if names.include?('m') seconds += match['h'].to_i * 3600 if names.include?('h') Mongoid::TimeField::Value.new(seconds, @options) end end end # Get the object as it was stored in the database, and instantiate # this custom class from it. def demongoize(object) if object.nil? nil else Mongoid::TimeField::Value.new(object, @options) end end # Takes any possible object and converts it to how it would be # stored in the database. def mongoize(object) case object when Mongoid::TimeField::Value then object.mongoize when String then parse(object).mongoize else object end end # Converts the object that was supplied to a criteria and converts it # into a database friendly form. def evolve(object) case object when String then parse(object).mongoize when Mongoid::TimeField::Value then object.mongoize else object end end end