Recursively marks ActionController::Parameters as permitted

deep_permit.rb

def deep_permit(args)
  case args
  when ActionController::Parameters
    args.to_unsafe_hash.deep_symbolize_keys
  when Hash
    args.symbolize_keys.transform_values(&method(:deep_permit))
  when Array
    args.map(&method(:deep_permit))
  else
    args
  end
end