class Site < ActiveRecord::Base
  belongs_to :owner, :class_name => 'User'
  
  has_many :memberships, :dependent => :destroy
  has_many :users, :through => :memberships
  
  # has_many :tags, :dependent => :destroy
  has_many :articles, :dependent => :destroy
  has_many :pages, :dependent => :destroy do
    def find_by_url(url = [])
      url = url.split('/').delete_if(&:blank?) if url.is_a? String

      page = where(:parent_id => nil).first
      
      url.each do |part|
        page = page.children.published.where(:permalink => part).first 
      end
    
      page
    end
  end
  
  def homepage
    pages.root
  end
end