layout_helper.rb

### Inside the helper file that uses it.
class Spitter
  include ActionView::Helpers::TagHelper
  include ActionView::Helpers::TextHelper
  include ActionView::Helpers::UrlHelper
  
  def initialize(klass)
    @klass = klass
  end

  def method_missing(field, tag = :p)
    content = @klass.send(field)
    
    # Don't escape HTML for DB stored textilized strings. Just reset the tag to DIV.
    unless tag == :textilized
      content = h(content)
    else
      tag = :div
    end
    
    unless !content or content.blank? or content.nil?
      # Special cases like email and web links.
      case field
      when :email
        link_to content, "mailto:#{content}", :class => field
      when :url, :www
        link_to content, content, :class => field
      else
        # Textilize content marked and reset the tag to DIV.
        if tag == :textilize
          content = textilize(content) 
          tag = :div
        end
        
        # Output any content.
        content_tag tag.to_sym, content, :class => field                  
      end
    else
      ""
    end
  end
end

### Goes into your helper module.
def spit(klass, field = '', tag = :p)
  s = Spitter.new(klass)

  if block_given?
   yield s
  else
   s.send field, tag
  end
end

view

### View in HAML.
- spit @organization do |o|
  = o.title
  = o.hours
  = o.full_address
  = o.email
  = o.url
  = o.description_summary