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khosb/application/classes/ORM.php

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<?php defined('SYSPATH') or die('No direct access allowed.');
/**
* This class overrides Kohana's ORM
*
* This file contains enhancements for Kohana, that should be considered upstream and maybe havent been yet.
* It also contains some functionality for OSB, which cannot be covered in ORM_OSB.
*
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* @package OSB
* @category Modifications
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* @author Deon George
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* @copyright (c) 2009-2013 Open Source Billing
* @license http://dev.osbill.net/license.html
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*/
abstract class ORM extends Kohana_ORM {
protected $_table_names_plural = FALSE;
protected $_model_names_plural = FALSE;
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private $_object_formated = array();
private $_formated = FALSE;
// Our filters used to display values in a friendly format
protected $_display_filters = array();
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// Tables that do not have a site_id column
public static $no_site_id_tables = array('setup','country','currency','language','tax');
/**
* Add our OSB site_id to each SELECT query
* @see parent::__build()
*/
final protected function _build($type) {
// Exclude tables without site ID's
if (! in_array($this->_table_name,ORM::$no_site_id_tables))
$this->where($this->_object_name.'.site_id','=',Company::instance()->site());
// Ensure we Cache our queries
$caching = FALSE;
foreach ($this->_db_pending as $method)
if ($method['name'] == 'cached') {
$caching = TRUE;
break;
}
if (! $caching)
$this->cached(Kohana::$config->load('cache.orm.'.$this->_table_name));
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return parent::_build($type);
}
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/**
* Format fields for display purposes
*
* @param string column name
* @return mixed
*/
private function _format() {
foreach ($this->_display_filters as $column => $formats)
$this->_object_formated[$column] = $this->run_filter($column,$this->__get($column),array($column=>$formats));
$this->_formated = TRUE;
}
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/**
* Function help to find records that are active
*/
protected function _where_active() {
return $this->where('status','=',TRUE);
}
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/**
* Overrides Kohana cache so that it can be globally disabled.
*/
public function cached($lifetime=NULL) {
return $this->_db->caching() ? parent::cached($lifetime) : $this;
}
public function clear() {
$this->_formated = FALSE;
$this->_object_formated = array();
return parent::clear();
}
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/**
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* Override KH's ORM count_relations() function, to include our site_id in the query.
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*
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* This is a copy of KH's ORM count_relations() function, with the addition of a where
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* clause to include the site id.
*/
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public function count_relations($alias, $far_keys = NULL)
{
if ($far_keys === NULL)
{
return (int) DB::select(array(DB::expr('COUNT(*)'), 'records_found'))
->from($this->_has_many[$alias]['through'])
->where($this->_has_many[$alias]['foreign_key'], '=', $this->pk())
->where('site_id', '=', Company::instance()->site())
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->execute($this->_db)->get('records_found');
}
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$far_keys = ($far_keys instanceof ORM) ? $far_keys->pk() : $far_keys;
// We need an array to simplify the logic
$far_keys = (array) $far_keys;
// Nothing to check if the model isn't loaded or we don't have any far_keys
if ( ! $far_keys OR ! $this->_loaded)
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return 0;
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$count = (int) DB::select(array(DB::expr('COUNT(*)'), 'records_found'))
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->from($this->_has_many[$alias]['through'])
->where($this->_has_many[$alias]['foreign_key'], '=', $this->pk())
->where($this->_has_many[$alias]['far_key'], 'IN', $far_keys)
->where('site_id', '=', Company::instance()->site())
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->execute($this->_db)->get('records_found');
// Rows found need to match the rows searched
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return (int) $count;
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}
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/**
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* Return a formated columns, as per the model definition
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*/
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public function display($column) {
// Trigger a load of the record.
$value = $this->__get($column);
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// If some of our fields need to be formated for display purposes.
if (! $this->_formated AND $this->_display_filters)
$this->_format();
if (isset($this->_object_formated[$column]))
return $this->_object_formated[$column];
else
return $value;
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}
public function display_filters(array $filters) {
$this->_display_filters = Arr::merge($this->_display_filters,$filters);
}
/**
* Function help to find records that are active
*/
public function list_active() {
return $this->_where_active()->find_all();
}
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/**
* This function is our AJAX helper, used by module list_autocomplete()
*/
public function list_autocomplete($term,$index,$value,array $label,array $limit=array(),array $options=NULL) {
$result = array();
$query = empty($options['object']) ? $this : $options['object'];
foreach ($limit as $w) {
list($k,$s,$v) = $w;
$query->and_where($k,$s,$v);
}
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$c = 0;
foreach ((empty($options['object']) ? $query->find_all() : $query->execute()) as $o) {
// If we got here via a DB query, we need to reload our ORM object from the result.
if (! is_object($o)) {
if (empty($options['key']))
throw new Kohana_Exception('Missing key for non object');
$o = $this->clear()->where($options['key'],'=',$o[$options['key']])->find();
}
switch ($index) {
case 'url':
if (empty($options['urlprefix']))
throw new Kohana_Exception('Missing URL Prefix');
$v = $options['urlprefix'].$o->resolve($value);
break;
default: $v = $o->resolve($value);
}
$k = '';
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foreach ($label as $k => $details)
foreach ($details as $lvalue)
$k = preg_replace('/%s/',$o->resolve($lvalue),$k,1);
$result[$c++] = array(
'value'=>$v,
'label'=>$k,
);
}
return $result;
}
/**
* This function is used so that methods can be called via variables
*/
public function resolve($key) {
eval("\$x = \$this->$key;");
return $x;
}
public function where_active() {
return $this->_where_active();
}
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}
?>