module DeviseHelper
  def devise_error_messages!
    return "" unless devise_error_messages?

    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)

    html = <<-HTML
    <div class="row">
      <div class="col-lg-12 col-md-12 panel-danger">
        <div class="content-box-header panel-heading">
          <div class="panel-title">
            #{sentence}
          </div>
        </div>
        <div class="content-box-large box-with-header" style="background:#f9dddd">
          <ul>#{messages}</ul>
        </div>
      </div>
    </div>
    HTML

    html.html_safe
  end

  def devise_error_messages?
    !resource.errors.empty?
  end

end