minnestar / sessionizer

module ApplicationHelper

  def edit(obj, &blk)

    return unless logged_in?

    if obj == current_participant || obj.try(:participant_id) == current_participant.id

      concat(capture(&blk))

    end

  end

  def markdown(str)

    return '' unless str

    @markdown ||= Redcarpet::Markdown.new(

        Redcarpet::Render::HTML.new,

        autolink: true,

        space_after_headers: true)

    sanitize_html(close_tags(@markdown.render(str))).html_safe

  end

  def close_tags(html)

    Nokogiri::HTML::DocumentFragment.parse(html).to_html

  end

  def sanitize_html(html)

    sanitize html,

      tags: %w(a img b i em strong p br ul ol li),

      attributes: %w(href src height width alt)

  end

  def toggle_attendance_button(session)

  end

end