def send_rejection_emails
    event = Event.find(params[:id])
    @email = event.generate_rejections_email
    @templates = [{subject: 'Absage 1', content: 'Lorem Ispum...'}, {subject: 'Absage 2', content: 'Lorem Ispum...'}, {subject: 'Absage 3', content: 'Lorem Ispum...'}]
    render :email