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sanyok

Случайный баннер при обновление страницы

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Существует-ли модуль случайный отображение баннера при обновление страницы?

 

заранее спасибо

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Самый банальный способ

 

в модели создать метод

    public function getRandomBanner() {
        $query = $this->db->query("SELECT * FROM " . DB_PREFIX . "banner_image bi
        LEFT JOIN " . DB_PREFIX . "banner_image_description bid ON (bi.banner_image_id  = bid.banner_image_id)
        WHERE bi.banner_id = '" . (int)$banner_id . "'
        AND bid.language_id = '" . (int)$this->config->get('config_language_id') . "'
        ORDER BY RAND() LIMIT 0,1");
        return $query->rows;
    }

Склонировать контроллер модуля, вызвать метод

 

Учитывая "размеры таблицы, приведенный запрос не сильно нагрузит базу.

Если баннеров много, то метод с запросам можно переделать

public function getRandomBanner() {
  $range_id = query( " SELECT MAX(`banner_id`) AS max_id , MIN(`banner_id`) AS min_id FROM `banner_image` ");
  $min = $query->row['min_id'];
  $max = $query->row['max_id'];
  $random = mt_rand( $min , $max_id );
  $sql = "SELECT * FROM " . DB_PREFIX . "banner_image bi
        LEFT JOIN " . DB_PREFIX . "banner_image_description bid ON (bi.banner_image_id  = bid.banner_image_id)
        WHERE bi.banner_id >= '" . $random . "'";
  $query =  $this->db->query($sql);
  return $query->rows;
}

писал с листа, если есть ошибки - не обессудьте.

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