lib/og/mixin/hierarchical.rb in og-0.19.0 vs lib/og/mixin/hierarchical.rb in og-0.20.0

@@ -57,10 +57,18 @@
 			end
 		
 			def child?
 				(@#{parent} &&  @#{parent} != 0) && (@#{left} > 1) && (@#{right} > @#{left})			
 			end
+
+			def parent
+				if root?
+					nil
+				else
+					#{base}[@#{parent}]
+				end
+			end
                                    
 			def #{children}_count
 				return (@#{right} - @#{left} - 1)/2
 			end
 
@@ -135,5 +143,6 @@
 end
 
 end 
 
 # * George Moschovitis <[e-mail]>
+# * Aleksi Niemela <[e-mail]>