Bootstrap alert Rails helpers

bootstrap_alert_helper.rb

  def bootstrap_alert(type, message, options = {})
    options.reverse_merge!(dismissable: true)

    classes = %w(alert)
    classes << case type
    when :error, :alert
      'alert-danger'
    else
      'alert-info'
    end

    if options[:dismissable]
      classes << '.alert-dismissable'
      times = "&times;".html_safe
      button_options = {
        type: :button,
        class: 'close',
        data: { dismiss: "alert" },
        "aria-hidden" => true,
      }
      message = capture do
        concat content_tag(:button, times, button_options)
        concat message
      end
    end

    content_tag(:div, message, class: classes)
  end

  def flash_messages
    capture do
      flash.each do |type, message|
        concat bootstrap_alert(type, message)
      end
    end
  end