Mongoid Utils

gistfile1.rb

module MongoidUtils
  module RandomDocuments
    extend ActiveSupport::Concern

    module ClassMethods
      def random n = 1
        skip((rand * 99999999).to_i % ([count-n, 2].max)).limit(n)
      end
    end
  end

  module Localization
    extend ActiveSupport::Concern

    module ClassMethods
      def human_attribute_value attribute, value, *args
        options = {default: value.to_s.humanize }.merge(args.extract_options!)
        I18n.translate(:"#{self.i18n_scope}.values.#{self.model_name.i18n_key}.#{attribute}.#{value}", options)
      end

      def human_attribute_values_for *attrs
        @@localization ||= {:mod => Module.new, :fields => []}
        mod = @@localization[:mod]
        attrs.reject!{|f| !self.fields.keys.include?(f.to_s) }
        return if attrs.empty?

        @@localization[:fields].concat(attrs).uniq!
        @@localization[:fields].each do |f|
          mod.send :define_method, :"#{f}_humanize" do
            v = attributes[f.to_s].to_s
            v.empty? ? v : self.class.human_attribute_value(f, v)
          end
        end

        include mod
      end
    end

    def human_attribute_value attr_name
      v = self.send(attr_name) if attr_name.present? && self.respond_to?(attr_name)
      self.class.human_attribute_value(attr_name, v)
    end
  end
end