h = {
      recent: (
        Serial.where('"serials"."id" IN (?)', r.first(10) ).order(:name).to_a +
        Serial.where(created_by_id: user_id, created_at: 3.hours.ago..Time.now).limit(5).to_a).uniq,
      pinboard: Serial.pinned_by(user_id).pinned_in_project(project_id).to_a