laurynas

class Item < ActiveRecord::Base

  named_scope :ascend_by_optional_category_title, 
                        :joins => "LEFT JOIN categories AS optional_categories ON optional_categories.id=items.category_id",
                        :order => "optional_categories.title"

  named_scope :descend_by_optional_category_title, 
                        :joins => "LEFT JOIN categories AS optional_categories ON optional_categories.id=items.category_id",
                        :order => "optional_categories.title DESC"

rsierra

Simple class multiassignment

Module to use similar model multiple params assignment and dates with multiparams (params["date(1i)"], params["date(2i)"], params["date(3i)"]) in a non ActiveModel class.

class Sample
  include ActiveModel::Multiassignment

  attr_accessor :name, :date
 multiparameter_dates :date