# File lib/better_nested_set_helper.rb, line 94
 94:       def nested_set_options_for_select(class_or_item, options=nil)
 95:         # find class
 96:         if class_or_item.is_a? Class
 97:           first_item = class_or_item.root
 98:         else
 99:           first_item = class_or_item
100:         end
101:         raise 'Not a nested set model !' if !first_item.respond_to? :acts_as_nested_set_options
102:         
103:         # exclude some items and all their children
104:         if options.is_a? Hash
105:           text_column = options[:text_column]
106:           options.delete_if { |key, value| key != :exclude }
107:         else
108:           options = nil
109:         end
110:         text_column ||= first_item.acts_as_nested_set_options[:text_column]
111:         
112:         tree = first_item.full_set(options)
113:         if block_given?
114:           tree.map{|item| [yield(item), item.id] }
115:         else  
116:           tree.map{|item| [ "#{'··' * item.level}#{item[text_column]}", item.id]}
117:         end
118:       end