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<?php defined('SYSPATH') or die('No direct script access.');
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/*
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* This file is part of open source system FreenetIS
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* and it is release under GPLv3 licence.
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*
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* More info about licence can be found:
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* http://www.gnu.org/licenses/gpl-3.0.html
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*
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* More info about project can be found:
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* http://www.freenetis.org/
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*
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*/
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/**
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* Model of logs.
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* Table logs is handled as partitioned table, it needs at least MySQL ver. 5.1.
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* Table partitions are created by scheduler.
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* Logs are preserved for maximum of 30 days.
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*
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* @author Ondřej Fibich
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* @package Model
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*
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* @property int $id
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* @property int $user_id
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* @property User_Model $user
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* @property int $object_id
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* @property string $table_name
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* @property string $time
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* @property string $values
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*/
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class Log_Model extends ORM
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{
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/** Logger action for adding record to the table */
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const ACTION_ADD = 1;
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/** Logger action for adding record to the table */
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const ACTION_DELETE = 2;
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/** Logger action for updating record to the table */
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const ACTION_UPDATE = 3;
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protected $belongs_to = array('user');
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/**
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* Contruct set logger
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* @param int $id
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*/
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public function __construct($id = NULL)
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{
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parent::__construct($id);
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// set action logger of
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$this->set_logger(FALSE);
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}
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/**
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* Creates table for logs
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* @author Ondřej Fibich
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*/
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public static function create_table()
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{
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Database::instance()->query("
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CREATE TABLE IF NOT EXISTS `logs` (
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`id` int(11) NOT NULL AUTO_INCREMENT,
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`table_name` varchar(255) COLLATE utf8_czech_ci NOT NULL,
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`values` text COLLATE utf8_czech_ci,
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`time` datetime NOT NULL,
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`action` tinyint(2) NOT NULL DEFAULT '1',
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`object_id` int(11) NOT NULL,
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`user_id` int(11) NOT NULL,
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KEY `id` (`id`)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_czech_ci
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PARTITION BY RANGE (TO_DAYS(`time`))
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(PARTITION p_first VALUES LESS THAN (TO_DAYS('1970-01-01')) ENGINE = InnoDB);
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");
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}
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/**
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* Add new partition for logs
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* @author Ondřej Fibich
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* @see Scheduler_Controller::logs_partitions_daily()
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*/
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public function add_partition()
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{
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$partition_name = date('Y_m_d', time());
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$partition_date = date('Y-m-d', strtotime('+1 day', time()));
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$this->db->query("
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ALTER TABLE logs
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ADD PARTITION (
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PARTITION p_$partition_name
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VALUES LESS THAN (TO_DAYS('$partition_date')
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) ENGINE = InnoDB)
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");
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}
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/**
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* Remove partitions for log which are more than 31 days old
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*
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* @author Ondřej Fibich
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* @see Scheduler_Controller::logs_partitions_daily()
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*/
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public function remove_old_partitions()
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{
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// get all old partitions
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$partitions = $this->db->query("
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SELECT partition_name FROM
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(
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SELECT DISTINCT CONCAT('p_', DATE_FORMAT(time, '%Y_%m_%d')) AS partition_name
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FROM logs l
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WHERE DATE_SUB(NOW(), INTERVAL 31 DAY) > time
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) p GROUP BY partition_name
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");
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foreach ($partitions as $partition)
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{
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$this->db->query("
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ALTER TABLE logs
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DROP PARTITION " . $partition->partition_name
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);
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}
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}
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/**
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* Gets all users logs with limit
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*
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* @param int $offset
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* @param int $limit
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* @param int $user_id
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* @return Mysql_Result
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*/
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public function get_all_users_logs($user_id, $offset, $limit)
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{
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return $this->db->query("
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SELECT l.*
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FROM logs l
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WHERE user_id = ?
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ORDER BY id DESC
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LIMIT " .intval($offset). ", " .intval($limit). "
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", $user_id);
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}
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/**
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* Gets all objects logs with limit
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*
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* @param string $table_name
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* @param int $object_id
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* @param int $offset
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* @param int $limit
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* @return Mysql_Result
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*/
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public function get_all_object_logs($table_name, $object_id, $offset, $limit)
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{
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return $this->db->query("
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SELECT l.*
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FROM logs l
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WHERE object_id = ? AND table_name = ?
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ORDER BY id DESC
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LIMIT " .intval($offset). ", " .intval($limit). "
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", $object_id, $table_name);
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}
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/**
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* Gets all logs with limit
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*
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* @param int $offset
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* @param int $limit
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* @param array $filter_sql Filter for where contition
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* @return Mysql_Result
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*/
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public function get_all_logs($offset, $limit, $filter_sql = '')
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{
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// fill where contition
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$where = !empty($filter_sql) ? 'WHERE ' . $filter_sql : '';
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// query
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return $this->db->query("
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SELECT * FROM (
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SELECT logs.*, u.name AS user_name, u.surname AS user_surname,
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u.login AS user_login, m.name AS member_name
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FROM logs
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LEFT JOIN users u ON u.id = logs.user_id
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LEFT JOIN members m ON m.id = u.member_id
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) l $where
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ORDER BY id DESC
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LIMIT " .intval($offset). ", " .intval($limit). "
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");
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}
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/**
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* Gets number of logs
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*
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* @param array $filter_sql Filter for where contition
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* @return int
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*/
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public function count_all_logs($filter_sql = array())
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{
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// fill where contition
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$where = !empty($filter_sql) ? 'WHERE ' . $filter_sql : '';
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return $this->db->query("
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SELECT COUNT(*) AS count FROM (
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SELECT logs.*, u.name AS user_name, u.surname AS user_surname,
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u.login AS user_login, m.name AS member_name
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FROM logs
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LEFT JOIN users u ON u.id = logs.user_id
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LEFT JOIN members m ON m.id = u.member_id
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) l $where
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")->current()->count;
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}
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/**
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* Gets number of users logs
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*
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* @param int $user_id
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* @return int
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*/
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public function count_all_users_logs($user_id)
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{
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return $this->db->query("
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SELECT COUNT(*) AS count FROM logs WHERE user_id = ?
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", $user_id)->current()->count;
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}
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/**
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* Gets number of object logs
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*
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* @param string $table_name
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* @param int $object_id
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* @return int
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*/
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public function count_all_object_logs($table_name, $object_id)
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{
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return $this->db->query("
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SELECT COUNT(*) AS count FROM logs WHERE table_name = ? AND object_id = ?
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", $table_name, $object_id)->current()->count;
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}
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/**
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* Gets last modification time of object
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*
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* @param string $table_name
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* @param int $object_id
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* @return string
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*/
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public function get_object_last_modification($table_name, $object_id)
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{
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$result = $this->db->query("
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SELECT time FROM logs WHERE table_name = ? AND object_id = ? ORDER BY time DESC
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", $table_name, $object_id);
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if ($result && $result->current())
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{
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return $result->current()->time;
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}
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}
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}
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