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145 lines
3.9 KiB
145 lines
3.9 KiB
<?php
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/* For licensing terms, see /license.txt */
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/**
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* This class provides basic methods to implement a CRUD for a new table in the database see examples in: career.lib.php and promotion.lib.php
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* Include/require it in your code to use its features.
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* @package chamilo.library
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*/
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class Model {
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var $table;
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var $columns;
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// var $pk; some day this will be implemented
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public function __construct() {
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}
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/**
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* Useful finder - experimental akelos like only use in notification.lib.php send function
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*/
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public function find($type, $options = null) {
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switch($type) {
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case 'all':
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return self::get_all($options);
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break;
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case (is_numeric($type)) :
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return self::get($type);
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break;
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}
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}
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/**
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* Delets an item
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*/
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public function delete($id) {
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if (empty($id) or $id != strval(intval($id))) { return false; }
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// Database table definition
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$result = Database :: delete($this->table, array('id = ?' => $id));
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if ($result != 1){
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return false;
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}
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return true;
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}
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private function clean_parameters($params){
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$clean_params = array();
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if (!empty($params)) {
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foreach($params as $key=>$value) {
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if (in_array($key, $this->columns)) {
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$clean_params[$key] = $value;
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}
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}
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}
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return $clean_params;
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}
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/**
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* Displays the title + grid
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*/
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public function display() {
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}
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/**
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* Gets an element
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*/
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public function get($id) {
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if (empty($id)) { return array(); }
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$result = Database::select('*',$this->table, array('where'=>array('id = ?'=>intval($id))),'first');
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return $result;
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}
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public function get_all($options = null) {
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return Database::select('*',$this->table, $options);
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}
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/**
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* Get the count of elements
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*/
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public function get_count() {
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$row = Database::select('count(*) as count', $this->table, array(),'first');
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return $row['count'];
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}
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/**
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* a little bit of javascript to display
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*/
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public function javascript() {
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}
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/**
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* Saves an element into the DB
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*
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* @param array $values
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* @return bool
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*
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*/
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public function save($params) {
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$params = $this->clean_parameters($params);
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if (in_array('created_at', $this->columns)) {
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$params['created_at'] = api_get_utc_datetime();
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}
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if (!empty($params)) {
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$id = Database::insert($this->table, $params);
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if (is_numeric($id)){
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return $id;
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}
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}
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return false;
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}
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/**
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* Updates the obj in the database. The $params['id'] must exist in order to update a record
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*
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* @param array $values
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*
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*/
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public function update($params) {
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$params = $this->clean_parameters($params);
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//If the class has the updated_at field we update the date
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if (in_array('updated_at', $this->columns)) {
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$params['updated_at'] = api_get_utc_datetime();
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}
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//If the class has the created_at field then we remove it
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if (in_array('created_at', $this->columns)) {
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unset($params['created_at']);
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}
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if (!empty($params) && !empty($params['id'])) {
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$id = intval($params['id']);
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unset($params['id']); //To not overwrite the id
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if (is_numeric($id)) {
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$result = Database::update($this->table, $params, array('id = ?'=>$id));
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if ($result){
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return true;
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}
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}
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}
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return false;
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}
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} |