module DeviseHelper
  def devise_error_messages!
    return '' if resource.errors.empty?

    messages = resource.errors.full_messages.map { |msg| content_tag(:li, msg) }.join
    #sentence = I18n.t('errors.messages.not_saved',
    #count: resource.errors.count,
    #resource: resource.class.model_name.human.downcase)

    # for Bootstrap 3 pay attention to the classes in the "div"

    html = <<-HTML
    <div class="alert alert-danger alert-dismissable"> 
    <button type="button" class="close" data-dismiss="alert" aria-hidden="true">&times;</button>
    #{messages}</div>
    HTML
    html.html_safe
  end
end