This post originated from an RSS feed registered with Ruby Buzz by Vincent Woo. Original Post: Reusing Rails 2.2.2 strip_tag view helper Feed Title: Undefined Range Feed URL: http://www.undefinedrange.com/categories/ruby-on-rails.rss Feed Description: Interesting things I experience with Ruby on Rails. Latest Ruby Buzz Posts Latest Ruby Buzz Posts by Vincent Woo Latest Posts From Undefined Range

In one of my Rails projects, I have this one class that strips HTML from some user submitted text. Instead of reinventing the wheel, I reused the Rails view helper strip_tags() by including the relevant module:

  class Presenter
    include ActionView::Helpers::SanitizeHelper
  end

This worked great until I upgraded the Rails framework to v2.2.2. The following error began appearing:

  undefined method `full_sanitizer' for Presenter:Class

Turned out it was easy to fix. Looking at the strip_tags method in actionpack/lib/action_view/helpers/sanitize_helper.rb:

def strip_tags(html)
  self.class.full_sanitizer.sanitize(html)
end

It’s trying to access a class method that doesn’t exist in Presenter. While I included the instance methods, now I also have to extend the necessary class methods.

  class Presenter
    include ActionView::Helpers::SanitizeHelper
    extend ActionView::Helpers::SanitizeHelper::ClassMethods
  end

Now all is good.