Get rid of complex HTML logic in Helpers with Composite Pattern

gistfile1.rb

# Composite Pattern

class TagNode
  include ActionView::Helpers::TagHelper
  
  def initialize(name, options = {})
    @name = name.to_s
    @attributes = options
    @children = []
  end
  
  def to_s
    value = @children.each { |c| c.to_s }.join
    content_tag(@name, value.to_s, @attributes)
  end
  
  def <<(tag_node)
    @children << tag_node
  end
end

gistfile2.rb

# Usage
table = TagNode.new(:table, table_tag_options)
table << thead = TagNode.new(:thead)
thead << tr = TagNode.new(:tr, :class => 'odd')
thead << tr = TagNode.new(:tr, :class => 'even')

table << tbody = TagNode.new('tbody')
tbody << tr = TagNode.new(:tr, :class => cycle('', 'odd'))

return table.to_s