config/initializers/sanitize.rb

   1 Sanitize::Config::OSM = Sanitize::Config.merge(
   2   Sanitize::Config::RELAXED,
   3   :elements => Sanitize::Config::RELAXED[:elements] - %w[div style],
   4   :remove_contents => %w[script style],
   5   :transformers => lambda do |env|
   6     style = env[:node]["style"] || ""
   7
   8     env[:node].remove_class
   9     env[:node].remove_attribute("style")
  10
  11     env[:node].add_class("table table-sm w-auto") if env[:node_name] == "table"
  12
  13     case style
  14     when /\btext-align:\s+left\b/
  15       env[:node].add_class("text-start")
  16     when /\btext-align:\s+center\b/
  17       env[:node].add_class("text-center")
  18     when /\btext-align:\s+right\b/
  19       env[:node].add_class("text-end")
  20     end
  21
  22     if env[:node_name] == "a"
  23       rel = env[:node]["rel"] || ""
  24
  25       env[:node]["rel"] = rel.split.select { |r| r == "me" }.append("nofollow", "noopener", "noreferrer").sort.join(" ")
  26     end
  27   end
  28 )