Module: Refinery::HtmlTruncationHelper

Included in:
ApplicationHelper
Defined in:
vendor/plugins/refinery/lib/refinery/html_truncation_helper.rb

Instance Method Summary collapse

Instance Method Details

#truncate(text, *args) ⇒ Object

Like the Rails truncate helper but doesn’t break HTML tags, entities, and optionally. words.



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# File 'vendor/plugins/refinery/lib/refinery/html_truncation_helper.rb', line 27

def truncate(text, *args)
  return super unless ((arguments = args.dup).extract_options![:preserve_html_tags] == true) # don't ruin the current args object
  return if text.nil?

  options = args.extract_options!
  max_length = options[:length] || 30
  omission = options[:omission] || "..."
  # use :link => link_to('more', post_path), or something to that effect

  doc = Hpricot(text.to_s)
  omission_length = Hpricot(omission).inner_text.mb_chars.length
  content_length = doc.inner_text.mb_chars.length
  actual_length = max_length - omission_length

  if content_length > max_length
    truncated_doc = doc.truncate(actual_length)

    if (options[:preserve_full_words] || false)
      word_length = actual_length - (truncated_doc.inner_html.mb_chars.length - truncated_doc.inner_html.rindex(' '))
      truncated_doc = doc.truncate(word_length)
    end
    if (last_child = truncated_doc.children.last).inner_html.nil?
      "#{truncated_doc.inner_html}#{omission}#{options[:link]}" if options[:link]
    else
      last_child.inner_html = "#{last_child.inner_html.gsub(/\W.[^\s]+$/, "")}#{omission}"
      last_child.inner_html += options[:link] if options[:link]
      truncated_doc
    end
  else
    if options[:link]
      last_child = doc.children.last
      if last_child.inner_html.nil?
        doc.inner_html + options[:link]
      else
        last_child.inner_html = last_child.inner_html.gsub(/\W.[^\s]+$/, "") + options[:link]
        doc
      end
    else
      text.to_s
    end
  end
end