Add Page external_link

app/models/page.rb

@@ -5,6 +5,7 @@ class Page < CouchFoo::Base
    property :content, String
    property :layout_id, String
    property :layout_name, String
+   property :external_link, String
    property :position, Integer
    property :is_published, Boolean
    
@@ -30,12 +31,12 @@ class Page < CouchFoo::Base
    protected
    
    def setup_default_value
-     unless self.position
+     if self.position.blank?
        max_page = Page.last( :use_key => 'position')
        self.position = (max_page)? max_page.position.to_i + 1 : 1
      end
      
-     unless self.parent_page_id
+     if self.parent_page_id.blank?
        self.parent_page_id = "root"
      end
    end