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Add Datatables Library
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‎system/libraries/Data_tables.php‎

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<?php
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/**
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* Project codeigniter-framework
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* Created by PhpStorm
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* User: 713uk13m <dev@nguyenanhung.com>
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* Copyright: 713uk13m <dev@nguyenanhung.com>
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* Date: 10/03/2023
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* Time: 15:01
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*/
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defined('BASEPATH') or exit('No direct script access allowed');
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/**
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* Class CI_Data_tables
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*
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* @author 713uk13m <dev@nguyenanhung.com>
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* @copyright 713uk13m <dev@nguyenanhung.com>
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*/
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class CI_Data_tables
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{
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/**
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* Database table
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*
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* @var string
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*/
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private $table;
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/**
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* Primary key
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*
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* @var string
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*/
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private $primary_key;
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/**
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* Columns to fetch
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*
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* @var array
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*/
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private $columns;
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/**
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* Where clause
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*
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* @var mixed
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*/
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private $where;
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/**
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* CI Singleton
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*
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* @var object
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*/
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private $CI;
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/**
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* GET request
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*
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* @var array
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*/
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private $request;
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// --------------------------------------------------------------------
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/**
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* Constructor
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*
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* @param array $params Initialization parameters
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*/
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public function __construct($params)
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{
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$this->table = (array_key_exists('table', $params) === true && is_string($params['table']) === true) ? $params['table'] : '';
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$this->primary_key = (array_key_exists('primary_key', $params) === true && is_string($params['primary_key']) === true) ? $params['primary_key'] : '';
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$this->columns = (array_key_exists('columns', $params) === true && is_array($params['columns']) === true) ? $params['columns'] : [];
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$this->where = (array_key_exists('where', $params) === true && (is_array($params['where']) === true || is_string($params['where']) === true)) ? $params['where'] : [];
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$this->CI =& get_instance();
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$this->request = $this->CI->input->get();
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$this->validate_table();
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$this->validate_primary_key();
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$this->validate_columns();
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$this->validate_request();
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}
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// --------------------------------------------------------------------
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/**
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* Validate database table
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*/
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private function validate_table()
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{
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if ($this->CI->db->table_exists($this->table) === false) {
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$this->response(array('error' => 'Table doesn\'t exist.'));
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}
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}
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// --------------------------------------------------------------------
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/**
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* Validate primary key
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*/
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private function validate_primary_key()
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{
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if ($this->CI->db->field_exists($this->primary_key, $this->table) === false) {
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$this->response(array('error' => 'Invalid primary key.'));
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}
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}
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// --------------------------------------------------------------------
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/**
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* validate columns to fetch
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*/
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private function validate_columns()
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{
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foreach ($this->columns as $column) {
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if (is_string($column) === false || $this->CI->db->field_exists($column, $this->table) === false) {
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$this->response(array('error' => 'Invalid column.'));
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}
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}
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}
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// --------------------------------------------------------------------
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/**
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* validate GET request
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*/
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private function validate_request()
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{
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if (count($this->request['columns']) !== count($this->columns)) {
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$this->response(array('error' => 'Column count mismatch.'));
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}
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foreach ($this->request['columns'] as $column) {
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if (isset($this->columns[$column['data']]) === false) {
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$this->response(array('error' => 'Missing column.'));
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}
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$this->request['columns'][$column['data']]['name'] = $this->columns[$column['data']];
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}
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}
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// --------------------------------------------------------------------
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/**
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* Generates the ORDER BY portion of the query
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*/
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private function order()
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{
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foreach ($this->request['order'] as $order) {
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$column = $this->request['columns'][$order['column']];
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if ($column['orderable'] === 'true') {
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$this->CI->db->order_by($column['name'], strtoupper($order['dir']));
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}
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}
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}
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// --------------------------------------------------------------------
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/**
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* Generates the LIKE portion of the query
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*/
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private function search()
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{
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$global_search_value = $this->request['search']['value'];
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$likes = array();
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foreach ($this->request['columns'] as $column) {
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if ($column['searchable'] === 'true') {
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if (empty($global_search_value) === false) {
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$likes[] = array(
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'field' => $column['name'],
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'match' => $global_search_value
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);
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}
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if (empty($column['search']['value']) === false) {
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$likes[] = array(
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'field' => $column['name'],
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'match' => $column['search']['value']
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);
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}
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}
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}
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foreach ($likes as $index => $like) {
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if ($index === 0) {
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$this->CI->db->like($like['field'], $like['match']);
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} else {
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$this->CI->db->or_like($like['field'], $like['match']);
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}
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}
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}
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// --------------------------------------------------------------------
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/**
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* Generates the WHERE portion of the query
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*/
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private function where()
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{
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$this->CI->db->where($this->where);
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}
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// --------------------------------------------------------------------
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/**
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* Send response to DataTables
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*
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* @param array $data
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*/
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private function response($data)
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{
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$this->CI->output->set_content_type('application/json');
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$this->CI->output->set_output(json_encode($data));
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$this->CI->output->_display();
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exit;
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}
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// --------------------------------------------------------------------
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/**
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* Calculate total number of records
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*
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* @return int
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*/
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private function records_total()
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{
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$this->CI->db->reset_query();
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$this->where();
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$this->CI->db->from($this->table);
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return $this->CI->db->count_all_results();
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}
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// --------------------------------------------------------------------
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/**
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* Calculate filtered records
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*
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* @return int
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*/
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private function records_filtered()
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{
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$this->CI->db->reset_query();
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$this->search();
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$this->where();
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$this->CI->db->from($this->table);
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return $this->CI->db->count_all_results();
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}
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// --------------------------------------------------------------------
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/**
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* Process
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*
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* @param string $row_id = 'data'
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* @param string $row_class = ''
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*/
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public function process($row_id = 'data', $row_class = '')
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{
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if (in_array($row_id, array('id', 'data', 'none'), true) === false) {
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$this->response(array('error' => 'Invalid DT_RowId.'));
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}
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if (is_string($row_class) === false) {
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$this->response(array('error' => 'Invalid DT_RowClass.'));
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}
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$columns = array();
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$add_primary_key = true;
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foreach ($this->columns as $column) {
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$columns[] = $column;
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if ($column === $this->primary_key) {
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$add_primary_key = false;
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}
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}
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if ($add_primary_key === true) {
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$columns[] = $this->primary_key;
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}
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$this->CI->db->select(implode(',', $columns));
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$this->order();
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$this->search();
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$this->where();
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$query = $this->CI->db->get($this->table, $this->request['length'], $this->request['start']);
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$data['data'] = array();
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foreach ($query->result_array() as $row) {
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$r = array();
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foreach ($this->columns as $column) {
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$r[] = $row[$column];
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}
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if ($row_id === 'id') {
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$r['DT_RowId'] = $row[$this->primary_key];
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}
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if ($row_id === 'data') {
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$r['DT_RowData'] = array(
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'id' => $row[$this->primary_key]
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);
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}
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if ($row_class !== '') {
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$r['DT_RowClass'] = $row_class;
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}
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$data['data'][] = $r;
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}
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$data['draw'] = (int) $this->request['draw'];
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$data['recordsTotal'] = $this->records_total();
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$data['recordsFiltered'] = $this->records_filtered();
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$this->response($data);
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}
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}

‎system/libraries/Seo_onpage.php‎

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*
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* @author 713uk13m <dev@nguyenanhung.com>
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* @copyright 713uk13m <dev@nguyenanhung.com>
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*
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* $config['canonical_url'] = null;
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$config['site_title'] = "Site Title";
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$config['site_description'] = "Site Description";
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$config['site_image'] = null;
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$config['twitter_user'] = "@tw_username";
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$config['fb_app_id'] = null;
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$config['fb_page_id'] = null;
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*/
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class CI_Seo_onpage
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{

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