gistfile1.rb

class Page < ActiveRecord::Base
  
  acts_as_taggable_on :tags
  
  has_many :containers, :as => :containable, :dependent => :destroy, :order => "position"
  has_many :comments, :as => :commentable, :dependent => :destroy
  
  before_validation :generate_slug
  before_validation :set_dates
  
  validates_presence_of :title
  validates_uniqueness_of :slug
  
  attr_accessor :order_of_containers
  
  class << self
  
    def find_for_index
      find(:all, :order => 'published_at DESC')
    end

    def find_by_permalink(slug, options = {})
      page = find_by_slug(slug, options) || raise(ActiveRecord::RecordNotFound)
    end
    
  end
  
  def set_dates
    self.published_at = Time.now
  end
  
  def is_showable_by?(current_user)
    return true if published?
    return true if current_user && current_user.has_role?('admin')
    return false 
  end
  
  def is_createable_by?(current_user)
    return true if current_user && current_user.has_role?('admin')
    return false 
  end

  def is_editable_by?(current_user)
    return true if current_user && current_user.has_role?('admin')
    return false 
  end

  def is_destroyable_by?(current_user)
    return true if current_user && current_user.has_role?('admin')
    return false 
  end
  
  def generate_slug
    self.slug = self.title.dup # if self.slug.blank?
    self.slug.slugorize!
  end
  
  def published?
    published_at <= Time.now
  end
  
  def publish!
    published_at = Time.now
    save
    reload
  end
  
  # TODO how to account for validations? as this is for js
  def order_of_containers=(order_of_containers)
    new_ordering = parse_order_of_containers(order_of_containers)   
    new_ordering.each_with_index do |container_id, index|
      c = containers.find(container_id)
      c.position = index + 1
      c.save(false)
    end
  end
    
  def parse_order_of_containers(order='')
    order = order.delete('li_container_')
    order = order.split(',')
    order = order.collect(&:to_i)
    order = order.select { |i| container_ids.include? i }
    raise "OUCH" if order.blank?
    order
  end
  
end