Showing better highlighted search result fragments with Elasticsearch

gistfile1.rb

  def ellipses_for_highlights(params_highlight, params_original)
    # have to do this because highlighted stuff from ES has a trailing space for whatever reason
    stripped_highlighted_item = strip_tags(params_highlight).rstrip
    # if the beginning of the highlighted text doesn't match the original it has been clipped
    tmp = params_original =~ /#{stripped_highlighted_item}/
    front_ellipsis = tmp != 0
    # if the last 10 characters of the highlighted text don't match the original, same deal
    back_ellipsis = last_string_chars(stripped_highlighted_item, 10) != last_string_chars(params_original, 10)

    highlighted_item = front_ellipsis ? "... " + params_highlight : params_highlight
    highlighted_item = back_ellipsis ? highlighted_item + " ..." : highlighted_item
  end