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Clean your Ruby on Rails ActiveRecords automatically

November 28, 2007

Let's say you need to make your Rails app have a field for users to put stuff in. Dangerous huh? The open nature of Ruby makes it simple to cleanup:

app/model/cleaner.rb:
---------------------
module Cleaner
  def self.append_features( base )
    base.before_save do |model|
      model.html = model.html.gsub( /<(.|\n)*?>/, '' )\
        if model.respond_to?( :html )
    end
  end
end

add to config/environment.rb:
-----------------------------
require "#{RAILS_ROOT}/app/models/cleaner"
class ActiveRecord::Base
  include Cleaner
end

Now any columns named 'html' in any of your models will get cleaned of any html tags.

Tags:

rubyonrails, html, strip, tags

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