Class: Decidim::HtmlTruncation

Inherits:
Object
  • Object
show all
Includes:
SanitizeHelper
Defined in:
app/services/decidim/html_truncation.rb

Instance Method Summary collapse

Methods included from SanitizeHelper

#decidim_escape_translated, #decidim_html_escape, #decidim_sanitize, #decidim_sanitize_admin, #decidim_sanitize_editor, #decidim_sanitize_editor_admin, #decidim_sanitize_newsletter, #decidim_sanitize_translated, #decidim_url_escape, included

Constructor Details

#initialize(text, options = {}) ⇒ HtmlTruncation

Truncates html content text - Content to be truncated options - Hash with the options

max_length: An Integer maximum number of characters
tail: Suffix to add after truncation
count_tags: A boolean which tells if html tags should be calculated to max length, otherwise just content
count_tail: A boolean value that determines whether max_length contains the tail
tail_before_final_tag: A boolean, add tail before final tag if true, otherwise add tail where content is cut.



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# File 'app/services/decidim/html_truncation.rb', line 15

def initialize(text, options = {})
  @options = {
    max_length: options[:max_length] || 30,
    tail: options[:tail] || "...",
    count_tags: options[:count_tags] || false,
    count_tail: options[:count_tail] || false,
    tail_before_final_tag: options[:tail_before_final_tag] || false
  }
  @text = text
end

Instance Method Details

#perform ⇒ Object

Perform truncation to the html content (text) added in constructor Returns truncated String



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# File 'app/services/decidim/html_truncation.rb', line 28

def perform
  @document = Nokogiri::HTML::DocumentFragment.parse(@text)
  @tail_added = false
  @remaining = initial_remaining
  @cut = false
  cut_children(document, options[:count_tags])
  add_tail(document) if @remaining.negative? && !@tail_added
  escape_html_from_content(document)

  # Nokogiri's to_html escapes " to " and we do not want extra &amp so we have to unescape.
  CGI.unescape_html(document.to_html).gsub("\n", "")
end