class Post < ActiveRecord::Base



	class << self
		alias_method :find_standard, :find
	end
	validates_presence_of :publish_from, :publish_to
	before_create :validates_time

	def validates_time
	   [:publish_from, :publish_to].each do |attr|
		 errors.add(attr, 'should be ActiveSupport::TimeWithZone') unless self.send(attr).is_a?(ActiveSupport::TimeWithZone)
	   end
	   raise 'blaad' unless errors.empty?

	 end

	def self.find(*args)
		now=Time.now
		with_scope(:find=>{ :conditions=> ["publish_from < ? and publish_to > ?", now, now] }) do
		  self.find_standard(*args)
		end
	end

	def self.between(hash, *args)
		with_scope(:find=>{ :conditions=> ["publish_from < ? and publish_to < ? and publish_to > ?", hash[:from].utc, hash[:to].utc, hash[:from].utc] }) do
		  self.find_standard(*args)
		end
	end

	def self.in_date(time, *args)
		with_scope(:find=>{ :conditions=> ["publish_from < ? and publish_to < ?", time.utc, time.utc] }) do
		  self.find_standard(*args)
		end
	end

end