gistfile1.rb

def create
  @form = ReminderForm.new(remindable.reminders.build)
  if @form.validate(reminder_params)
    @form.save do |params|
      ReminderCreator.new(current_user, remindable, params).perform
      redirect_to :back, notice: "Reminder '#{@form.title}' created successfully."
    end
  else
    render :new
  end
end