agenda-libre-ruby/app/helpers/events_helper.rb

# Helper for the event views
module EventsHelper
  def set_events_meta
    set_meta_tags \
      description: t('layouts.application.subtitle'),
      keywords: @events.pluck(:tags).join(' ').split.group_by { |i| i }
        .reject { |_k, v| v.size < 2 }.map { |k, _v| k },
      DC: {
        title: t('layouts.application.title'),
        subject: t('layouts.application.subtitle'),
        publisher: 'april'
      }
  end

  def set_event_meta
    set_meta_tags \
      keywords: @event.tags,
      DC: { title: @event.title, date: @event.start_time.to_s },
      geo: {
        region: @event.related_region,
        placename: @event.city,
        position: "#{@event.related_city.try :latitude};" \
        + "#{@event.related_city.try :longitude}"
      }
  end
end