class ActionController::LogSubscriber

def unpermitted_parameters(event)
  debug do
    unpermitted_keys = event.payload[:keys]
    display_unpermitted_keys = unpermitted_keys.map { |e| ":#{e}" }.join(", ")
    context = event.payload[:context].map { |k, v| "#{k}: #{v}" }.join(", ")
    color("Unpermitted parameter#{'s' if unpermitted_keys.size > 1}: #{display_unpermitted_keys}. Context: { #{context} }", RED)
  end
end