Pulling attributes_from_column_definition should set the primary id t…

…o nil instead of not at all

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@232 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/lib/active_record/base.rb

@@ -1047,7 +1047,7 @@ def interpolate_sql(sql, record = nil)
       # that instances loaded from the database would.
       def attributes_from_column_definition
         connection.columns(self.class.table_name, "#{self.class.name} Columns").inject({}) do |attributes, column| 
-          attributes[column.name] = column.default unless column.name == self.class.primary_key
+          attributes[column.name] = (column.default unless column.name == self.class.primary_key)
           attributes
         end
       end