base.rb in nested_set-1.6.2

- old
+ new

@@ -26,10 +26,11 @@
           # Configuration options are:
           #
           # * +:parent_column+ - specifies the column name to use for keeping the position integer (default: parent_id)
           # * +:left_column+ - column name for left boundry data, default "lft"
           # * +:right_column+ - column name for right boundry data, default "rgt"
+          # * +:depth_column+ - column name for level cache data, default "depth"
           # * +:scope+ - restricts what is to be considered a list. Given a symbol, it'll attach "_id"
           #   (if it hasn't been already) and use that as the foreign key restriction. You
           #   can also pass an array to scope by multiple attributes.
           #   Example: <tt>acts_as_nested_set :scope => [:notable_id, :notable_type]</tt>
           # * +:dependent+ - behavior for cascading destroy. If set to :destroy, all the
@@ -43,10 +44,11 @@
           def acts_as_nested_set(options = {})
             options = {
               :parent_column => 'parent_id',
               :left_column => 'lft',
               :right_column => 'rgt',
+              :depth_column => 'depth',
               :dependent => :delete_all, # or :destroy
             }.merge(options)
 
             if options[:scope].is_a?(Symbol) && options[:scope].to_s !~ /_id$/
               options[:scope] = "#{options[:scope]}_id".intern
@@ -285,10 +287,14 @@
 
           def scope_column_names
             Array(acts_as_nested_set_options[:scope])
           end
 
+          def depth_column_name
+            acts_as_nested_set_options[:depth_column]
+          end
+
           def quoted_left_column_name
             connection.quote_column_name(left_column_name)
           end
 
           def quoted_right_column_name
@@ -299,9 +305,13 @@
             connection.quote_column_name(parent_column_name)
           end
 
           def quoted_scope_column_names
             scope_column_names.collect {|column_name| connection.quote_column_name(column_name) }
+          end
+
+          def quoted_depth_column_name
+            connection.quote_column_name(depth_column_name)
           end
         end
 
         # Any instance method that returns a collection makes use of Rails 2.1's named_scope (which is bundled for Rails 2.0), so it can be treated as a finder.
         #