html - 如何对 HTML 进行后处理以将 "target blank"添加到 Ruby 中的所有链接？

Question

如何对 HTML 进行后处理以将“目标空白”添加到 Ruby 中的所有链接？

我目前正在使用 Rinku (gem) 自动链接文本，效果很好。

但是，我正在对 HTML 进行后处理，一些链接已经是链接，因此没有使用 Rinku 进行处理。

我怎样才能将目标空白属性添加到那些？

应用程序 Controller .rb

def text_renderer text
  AutoHTML.new(text).render
end

auto_html.rb

class AutoHTML
  include ActionView::Helpers

  def initialize text
    @text = text
  end

  def render
    text = prepare @text
    text = auto_link(text)
    text.html_safe
  end

  private

  def prepare text
    if text.nil? || text.empty?
      ""
    else
      text
    end
  end

  def auto_link text
    Rinku.auto_link(text, :all, 'target="_blank"')
  end
end

Answer 1

我用 nokogiri 实现了一个解决方案:

def self.a_with_target_blank(body)
  doc = Nokogiri::HTML(body)
  doc.css('a').each do |link|
    link['target'] = '_blank'
    # Worried about @spickermann's security concerns in the comment? then
    # consider also to add:
    # 
    # link['rel'] = 'noopener' 
    # 
    # In any case, this security hole has been solved in modern browsers, (check
    # https://github.com/whatwg/html/issues/4078) so unless you're supporting
    # very old browsers, there's no much to worry about.
  end
  doc.to_s
end