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Direktori : /proc/self/root/home2/selectio/www/mm-tailor-billing/app/libraries/ |
Current File : //proc/self/root/home2/selectio/www/mm-tailor-billing/app/libraries/Datatables.php |
<?php if(!defined('BASEPATH')) exit('No direct script access allowed'); /** * Ignited Datatables * * This is a wrapper class/library based on the native Datatables server-side implementation by Allan Jardine * found at http://datatables.net/examples/data_sources/server_side.html for CodeIgniter * * @package CodeIgniter * @subpackage libraries * @category library * @version 2.0 <beta> * @author Vincent Bambico <metal.conspiracy@gmail.com> * Yusuf Ozdemir <yusuf@ozdemir.be> * @link http://ellislab.com/forums/viewthread/160896/ */ class Datatables { /** * Global container variables for chained argument results * */ private $ci; private $table; private $distinct; private $group_by = array(); private $select = array(); private $joins = array(); private $columns = array(); private $where = array(); private $or_where = array(); private $where_in = array(); private $like = array(); private $or_like = array(); private $filter = array(); private $add_columns = array(); private $edit_columns = array(); private $unset_columns = array(); private $post_columns = array(); /** * Copies an instance of CI */ public function __construct() { $this->post_columns = $this->input->post('columns'); } public function __get($var) { return get_instance()->$var; } /** * If you establish multiple databases in config/database.php this will allow you to * set the database (other than $active_group) - more info: http://ellislab.com/forums/viewthread/145901/#712942 */ public function set_database($db_name) { $db_data = $this->load->database($db_name, TRUE); $this->db = $db_data; } /** * Generates the SELECT portion of the query * * @param string $columns * @param bool $backtick_protect * @return mixed */ public function select($columns, $backtick_protect = TRUE) { foreach($this->explode(',', $columns) as $val) { $column = trim(preg_replace('/(.*)\s+as\s+(\w*)/i', '$2', $val)); $column = preg_replace('/.*\.(.*)/i', '$1', $column); // get name after `.` $this->columns[] = $column; $this->select[$column] = trim(preg_replace('/(.*)\s+as\s+(\w*)/i', '$1', $val)); } $this->db->select($columns, $backtick_protect); return $this; } /** * Generates the DISTINCT portion of the query * * @param string $column * @return mixed */ public function distinct($column) { $this->distinct = $column; $this->db->distinct($column); return $this; } /** * Generates a custom GROUP BY portion of the query * * @param string $val * @return mixed */ public function group_by($val) { $this->group_by[] = $val; $this->db->group_by($val); return $this; } /** * Generates the FROM portion of the query * * @param string $table * @return mixed */ public function from($table) { $this->table = $table; return $this; } /** * Generates the JOIN portion of the query * * @param string $table * @param string $fk * @param string $type * @return mixed */ public function join($table, $fk, $type = NULL) { $this->joins[] = array($table, $fk, $type); $this->db->join($table, $fk, $type); return $this; } /** * Generates the WHERE portion of the query * * @param mixed $key_condition * @param string $val * @param bool $backtick_protect * @return mixed */ public function where($key_condition, $val = NULL, $backtick_protect = TRUE) { $this->where[] = array($key_condition, $val, $backtick_protect); $this->db->where($key_condition, $val, $backtick_protect); return $this; } /** * Generates the WHERE portion of the query * * @param mixed $key_condition * @param string $val * @param bool $backtick_protect * @return mixed */ public function or_where($key_condition, $val = NULL, $backtick_protect = TRUE) { $this->or_where[] = array($key_condition, $val, $backtick_protect); $this->db->or_where($key_condition, $val, $backtick_protect); return $this; } /** * Generates the WHERE IN portion of the query * * @param mixed $key_condition * @param string $val * @param bool $backtick_protect * @return mixed */ public function where_in($key_condition, $val = NULL) { $this->where_in[] = array($key_condition, $val); $this->db->where_in($key_condition, $val); return $this; } /** * Generates the WHERE portion of the query * * @param mixed $key_condition * @param string $val * @param bool $backtick_protect * @return mixed */ public function filter($key_condition, $val = NULL, $backtick_protect = TRUE) { $this->filter[] = array($key_condition, $val, $backtick_protect); return $this; } /** * Generates a %LIKE% portion of the query * * @param mixed $key_condition * @param string $val * @param bool $backtick_protect * @return mixed */ public function like($key_condition, $val = NULL, $side = 'both') { $this->like[] = array($key_condition, $val, $side); $this->db->like($key_condition, $val, $side); return $this; } /** * Generates the OR %LIKE% portion of the query * * @param mixed $key_condition * @param string $val * @param bool $backtick_protect * @return mixed */ public function or_like($key_condition, $val = NULL, $side = 'both') { $this->or_like[] = array($key_condition, $val, $side); $this->db->or_like($key_condition, $val, $side); return $this; } /** * Sets additional column variables for adding custom columns * * @param string $column * @param string $content * @param string $match_replacement * @return mixed */ public function add_column($column, $content, $match_replacement = NULL) { $this->add_columns[$column] = array('content' => $content, 'replacement' => $this->explode(',', $match_replacement)); return $this; } /** * Sets additional column variables for editing columns * * @param string $column * @param string $content * @param string $match_replacement * @return mixed */ public function edit_column($column, $content, $match_replacement) { $this->edit_columns[$column][] = array('content' => $content, 'replacement' => $this->explode(',', $match_replacement)); return $this; } /** * Unset column * * @param string $column * @return mixed */ public function unset_column($column) { $column=explode(',',$column); $this->unset_columns=array_merge($this->unset_columns,$column); return $this; } /** * Builds all the necessary query segments and performs the main query based on results set from chained statements * * @param string $output * @param string $charset * @return string */ public function generate($output = 'json', $charset = 'UTF-8') { if(strtolower($output) == 'json') $this->get_paging(); $this->get_ordering(); $this->get_filtering(); return $this->produce_output(strtolower($output), strtolower($charset)); } /** * Generates the LIMIT portion of the query * * @return mixed */ private function get_paging() { $iStart = $this->input->post('start'); $iLength = $this->input->post('length'); if($iLength != '' && $iLength != '-1') $this->db->limit($iLength, ($iStart) ? $iStart : 0); } /** * Generates the ORDER BY portion of the query * * @return mixed */ private function get_ordering() { if ($this->input->post('order')) foreach ($this->input->post('order') as $key) if($this->check_cType()) $this->db->order_by($this->post_columns[$key['column']]['data'], $key['dir']); else $this->db->order_by($this->columns[$key['column']] , $key['dir']); } /** * Generates a %LIKE% portion of the query * * @return mixed */ private function get_filtering() { $sWhere = ''; $search = $this->input->post('search'); $sSearch = $this->db->escape_like_str(trim($search['value'])); $columns = array_values(array_diff($this->columns, $this->unset_columns)); $dt_pcs = count($this->post_columns); if($sSearch != '') for($i = 0; $i < $dt_pcs; $i++) if ($this->post_columns[$i]['searchable'] == 'true' && !array_key_exists($this->post_columns[$i]['data'], $this->add_columns)) if($this->check_cType()) $sWhere .= $this->select[$this->post_columns[$i]['data']] . " LIKE '%" . $sSearch . "%' OR "; else $sWhere .= $this->select[$this->columns[$i]] . " LIKE '%" . $sSearch . "%' OR "; for($i = 0; $i < $dt_pcs; $i++) { if (($this->post_columns[$i]['search']['value'] === '0' || $this->post_columns[$i]['search']['value'] === 0 || !empty($this->post_columns[$i]['search']['value'])) && $this->post_columns[$i]['searchable'] == 'true' && !array_key_exists($this->post_columns[$i]['data'], $this->add_columns)) { // if (!empty($this->post_columns[$i]['search']['value']) && $this->post_columns[$i]['searchable'] == 'true' && // !array_key_exists($this->post_columns[$i]['data'], $this->add_columns)) { if($this->check_cType()) $sWhere .= $this->select[$this->post_columns[$i]['data']] . " LIKE '%" . $this->post_columns[$i]['search']['value'] . "%' OR "; else $sWhere .= $this->select[$this->columns[$i]] . " LIKE '%" . $this->post_columns[$i]['search']['value'] . "%' OR "; } } $sWhere = substr_replace($sWhere, '', -3); if($sWhere != '') $this->db->where('(' . $sWhere . ')', null); foreach($this->filter as $val) $this->db->where($val[0], $val[1], $val[2]); } /** * Compiles the select statement based on the other functions called and runs the query * * @return mixed */ private function get_display_result() { return $this->db->get($this->table); } /** * Builds an encoded string data. Returns JSON by default, and an array of aaData if output is set to raw. * * @param string $output * @param string $charset * @return mixed */ private function produce_output($output, $charset) { $aaData = array(); $rResult = $this->get_display_result(); if($output == 'json') { $iTotal = $this->get_total_results(); $iFilteredTotal = $this->get_total_results(TRUE); } foreach($rResult->result_array() as $row_key => $row_val) { $aaData[$row_key] = ($this->check_cType())? $row_val : array_values($row_val); foreach($this->add_columns as $field => $val) if($this->check_cType()) $aaData[$row_key][$field] = $this->exec_replace($val, $aaData[$row_key]); else $aaData[$row_key][] = $this->exec_replace($val, $aaData[$row_key]); foreach($this->edit_columns as $modkey => $modval) foreach($modval as $val) $aaData[$row_key][($this->check_cType())? $modkey : array_search($modkey, $this->columns)] = $this->exec_replace($val, $aaData[$row_key]); $aaData[$row_key] = array_diff_key($aaData[$row_key], ($this->check_cType())? $this->unset_columns : array_intersect($this->columns, $this->unset_columns)); if(!$this->check_cType()) $aaData[$row_key] = array_values($aaData[$row_key]); } if($output == 'json') { $sOutput = array ( 'draw' => intval($this->input->post('draw')), 'recordsTotal' => $iTotal, 'recordsFiltered' => $iFilteredTotal, 'data' => $aaData ); if($charset == 'utf-8') return json_encode($sOutput); else return $this->jsonify($sOutput); } else return array('aaData' => $aaData); } /** * Get result count * * @return integer */ private function get_total_results($filtering = FALSE) { if($filtering) $this->get_filtering(); foreach($this->joins as $val) $this->db->join($val[0], $val[1], $val[2]); foreach($this->where as $val) $this->db->where($val[0], $val[1], $val[2]); foreach($this->or_where as $val) $this->db->or_where($val[0], $val[1], $val[2]); foreach($this->where_in as $val) $this->db->where_in($val[0], $val[1]); foreach($this->group_by as $val) $this->db->group_by($val); foreach($this->like as $val) $this->db->like($val[0], $val[1], $val[2]); foreach($this->or_like as $val) $this->db->or_like($val[0], $val[1], $val[2]); if(strlen($this->distinct) > 0) { $this->db->distinct($this->distinct); $this->db->select($this->columns); } $query = $this->db->get($this->table, NULL, NULL, FALSE); return $query->num_rows(); } /** * Runs callback functions and makes replacements * * @param mixed $custom_val * @param mixed $row_data * @return string $custom_val['content'] */ private function exec_replace($custom_val, $row_data) { $replace_string = ''; // Go through our array backwards, else $1 (foo) will replace $11, $12 etc with foo1, foo2 etc $custom_val['replacement'] = array_reverse($custom_val['replacement'], true); if(isset($custom_val['replacement']) && is_array($custom_val['replacement'])) { //Added this line because when the replacement has over 10 elements replaced the variable "$1" first by the "$10" $custom_val['replacement'] = array_reverse($custom_val['replacement'], true); foreach($custom_val['replacement'] as $key => $val) { $sval = preg_replace("/(?<!\w)([\'\"])(.*)\\1(?!\w)/i", '$2', trim($val)); if(preg_match('/(\w+::\w+|\w+)\((.*)\)/i', $val, $matches) && is_callable($matches[1])) { $func = $matches[1]; $args = preg_split("/[\s,]*\\\"([^\\\"]+)\\\"[\s,]*|" . "[\s,]*'([^']+)'[\s,]*|" . "[,]+/", $matches[2], 0, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE); foreach($args as $args_key => $args_val) { $args_val = preg_replace("/(?<!\w)([\'\"])(.*)\\1(?!\w)/i", '$2', trim($args_val)); $args[$args_key] = (in_array($args_val, $this->columns))? ($row_data[($this->check_cType())? $args_val : array_search($args_val, $this->columns)]) : $args_val; } $replace_string = call_user_func_array($func, $args); } elseif(in_array($sval, $this->columns)) $replace_string = $row_data[($this->check_cType())? $sval : array_search($sval, $this->columns)]; else $replace_string = $sval; $custom_val['content'] = str_ireplace('$' . ($key + 1), $replace_string, $custom_val['content']); } } return $custom_val['content']; } /** * Check column type -numeric or column name * * @return bool */ private function check_cType() { return (bool) ( ! is_numeric($this->post_columns[0]['data'])); } /** * Return the difference of open and close characters * * @param string $str * @param string $open * @param string $close * @return string $retval */ private function balanceChars($str, $open, $close) { $openCount = substr_count($str, $open); $closeCount = substr_count($str, $close); $retval = $openCount - $closeCount; return $retval; } /** * Explode, but ignore delimiter until closing characters are found * * @param string $delimiter * @param string $str * @param string $open * @param string $close * @return mixed $retval */ private function explode($delimiter, $str, $open = '(', $close=')') { $retval = array(); $hold = array(); $balance = 0; $parts = explode($delimiter, $str); foreach($parts as $part) { $hold[] = $part; $balance += $this->balanceChars($part, $open, $close); if($balance < 1) { $retval[] = implode($delimiter, $hold); $hold = array(); $balance = 0; } } if(count($hold) > 0) $retval[] = implode($delimiter, $hold); return $retval; } /** * Workaround for json_encode's UTF-8 encoding if a different charset needs to be used * * @param mixed $result * @return string */ private function jsonify($result = FALSE) { if(is_null($result)) return 'null'; if($result === FALSE) return 'false'; if($result === TRUE) return 'true'; if(is_scalar($result)) { if(is_float($result)) return floatval(str_replace(',', '.', strval($result))); if(is_string($result)) { static $jsonReplaces = array(array('\\', '/', '\n', '\t', '\r', '\b', '\f', '"'), array('\\\\', '\\/', '\\n', '\\t', '\\r', '\\b', '\\f', '\"')); return '"' . str_replace($jsonReplaces[0], $jsonReplaces[1], $result) . '"'; } else return $result; } $isList = TRUE; for($i = 0, reset($result); $i < count($result); $i++, next($result)) { if(key($result) !== $i) { $isList = FALSE; break; } } $json = array(); if($isList) { foreach($result as $value) $json[] = $this->jsonify($value); return '[' . join(',', $json) . ']'; } else { foreach($result as $key => $value) $json[] = $this->jsonify($key) . ':' . $this->jsonify($value); return '{' . join(',', $json) . '}'; } } /** * returns the sql statement of the last query run * @return type */ public function last_query() { return $this->db->last_query(); } }