rails validations validate html

	# assume we have a :data attribute (an hstore hash) in our model that values have html
	# data :hstore default({}), not null
	validate :invalid_html?
	def invalid_html?
	self.data.each do |key, value|
	doc = Nokogiri::HTML(value) {|config| config.strict }
	if doc.errors.any?
	errors.add(:base, "#{key}: #{doc.errors.join(", ")}")
	end
	end
	end
	# The problem is that Nokogiri its NOT very :strict
	#2.1.3 :001 > Nokogiri::HTML("<a/><a/><a/>") {|config| config.strict }.errors.any?
	# => false
	2.1.3 :002 >

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