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Contents
# frozen_string_literal: true
module Decidim
# Use this class as a scrubber to sanitize user input. The default
# scrubbed provided by Rails does not allow `iframe`s, and we're using
# them to embed videos, so we need to provide a whole new scrubber.
#
# Example:
#
# sanitize(@page.body, scrubber: Decidim::UserInputScrubber.new)
#
# Lists of default tags and attributes are extracted from
# https://stackoverflow.com/a/35073814/2110884.
class UserInputScrubber < Rails::Html::PermitScrubber
def initialize
super
self.tags = custom_allowed_tags
self.attributes = custom_allowed_attributes
end
private
def custom_allowed_attributes
Loofah::HTML5::SafeList::ALLOWED_ATTRIBUTES + %w(frameborder allowfullscreen)
end
def custom_allowed_tags
Loofah::HTML5::SafeList::ALLOWED_ELEMENTS_WITH_LIBXML2 + %w(iframe)
end
end
end
Version data entries
4 entries across 4 versions & 1 rubygems