You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
227 lines
6.7 KiB
227 lines
6.7 KiB
<?php
|
|
/**
|
|
* Fuel is a fast, lightweight, community driven PHP 5.4+ framework.
|
|
*
|
|
* @package Fuel
|
|
* @version 1.8.1
|
|
* @author Fuel Development Team
|
|
* @license MIT License
|
|
* @copyright 2010 - 2018 Fuel Development Team
|
|
* @link http://fuelphp.com
|
|
*/
|
|
|
|
namespace Orm;
|
|
|
|
class BelongsTo extends Relation
|
|
{
|
|
protected $singular = true;
|
|
|
|
protected $key_from = array();
|
|
|
|
protected $key_to = array('id');
|
|
|
|
public function __construct($from, $name, array $config)
|
|
{
|
|
$this->name = $name;
|
|
$this->model_from = $from;
|
|
$this->model_to = array_key_exists('model_to', $config)
|
|
? $config['model_to'] : \Inflector::get_namespace($from).'Model_'.\Inflector::classify($name);
|
|
$this->key_from = array_key_exists('key_from', $config)
|
|
? (array) $config['key_from'] : (array) \Inflector::foreign_key($this->model_to);
|
|
$this->key_to = array_key_exists('key_to', $config)
|
|
? (array) $config['key_to'] : $this->key_to;
|
|
$this->conditions = array_key_exists('conditions', $config)
|
|
? (array) $config['conditions'] : array();
|
|
|
|
$this->cascade_save = array_key_exists('cascade_save', $config)
|
|
? $config['cascade_save'] : $this->cascade_save;
|
|
$this->cascade_delete = array_key_exists('cascade_delete', $config)
|
|
? $config['cascade_delete'] : $this->cascade_delete;
|
|
|
|
if ( ! class_exists($this->model_to))
|
|
{
|
|
throw new \FuelException('Related model not found by Belongs_To relation "'.$this->name.'": '.$this->model_to);
|
|
}
|
|
$this->model_to = get_real_class($this->model_to);
|
|
}
|
|
|
|
public function get(Model $from, array $conditions = array())
|
|
{
|
|
$query = call_user_func(array($this->model_to, 'query'));
|
|
reset($this->key_to);
|
|
foreach ($this->key_from as $key)
|
|
{
|
|
// no point running a query when a key value is null
|
|
if ($from->{$key} === null)
|
|
{
|
|
return null;
|
|
}
|
|
$query->where(current($this->key_to), $from->{$key});
|
|
next($this->key_to);
|
|
}
|
|
|
|
$conditions = \Arr::merge($this->conditions, $conditions);
|
|
$query->_parse_where_array(\Arr::get($conditions, 'where', array()));
|
|
|
|
return $query->get_one();
|
|
}
|
|
|
|
public function join($alias_from, $rel_name, $alias_to_nr, $conditions = array())
|
|
{
|
|
$alias_to = 't'.$alias_to_nr;
|
|
$model = array(
|
|
'model' => $this->model_to,
|
|
'connection' => call_user_func(array($this->model_to, 'connection')),
|
|
'table' => array(call_user_func(array($this->model_to, 'table')), $alias_to),
|
|
'primary_key' => call_user_func(array($this->model_to, 'primary_key')),
|
|
'join_type' => \Arr::get($conditions, 'join_type') ?: \Arr::get($this->conditions, 'join_type', 'left'),
|
|
'join_on' => array(),
|
|
'columns' => $this->select($alias_to),
|
|
'rel_name' => strpos($rel_name, '.') ? substr($rel_name, strrpos($rel_name, '.') + 1) : $rel_name,
|
|
'relation' => $this,
|
|
'where' => \Arr::get($conditions, 'where', array()),
|
|
'order_by' => \Arr::get($conditions, 'order_by') ?: \Arr::get($this->conditions, 'order_by', array()),
|
|
);
|
|
|
|
reset($this->key_to);
|
|
foreach ($this->key_from as $key)
|
|
{
|
|
$model['join_on'][] = array($alias_from.'.'.$key, '=', $alias_to.'.'.current($this->key_to));
|
|
next($this->key_to);
|
|
}
|
|
foreach (array(\Arr::get($this->conditions, 'where', array()), \Arr::get($conditions, 'join_on', array())) as $c)
|
|
{
|
|
foreach ($c as $key => $condition)
|
|
{
|
|
! is_array($condition) and $condition = array($key, '=', $condition);
|
|
if ( ! $condition[0] instanceof \Fuel\Core\Database_Expression and strpos($condition[0], '.') === false)
|
|
{
|
|
$condition[0] = $alias_to.'.'.$condition[0];
|
|
}
|
|
if (count($condition) == 2) // From Query::_where()
|
|
{
|
|
$condition = array($condition[0], '=', $condition[1]);
|
|
}
|
|
is_string($condition[2]) and $condition[2] = \Db::quote($condition[2], $model['connection']);
|
|
|
|
$model['join_on'][] = $condition;
|
|
}
|
|
}
|
|
|
|
return array($rel_name => $model);
|
|
}
|
|
|
|
public function save($model_from, $model_to, $original_model_id, $parent_saved, $cascade)
|
|
{
|
|
if ($parent_saved)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if ( ! $model_to instanceof $this->model_to and $model_to !== null)
|
|
{
|
|
throw new \FuelException('Invalid Model instance added to relations in this model.');
|
|
}
|
|
|
|
// Save if it's a yet unsaved object
|
|
if ($model_to and $model_to->is_new())
|
|
{
|
|
$model_to->save(false);
|
|
}
|
|
|
|
$current_model_id = $model_to ? $model_to->implode_pk($model_to) : null;
|
|
|
|
// Check if there was another model assigned (this supersedes any change to the foreign key(s))
|
|
if ($current_model_id != $original_model_id)
|
|
{
|
|
// change the foreign keys in the model_from to point to the new relation
|
|
reset($this->key_from);
|
|
$model_from->unfreeze();
|
|
foreach ($this->key_to as $pk)
|
|
{
|
|
$model_from->{current($this->key_from)} = $model_to ? $model_to->{$pk} : null;
|
|
next($this->key_from);
|
|
}
|
|
$model_from->freeze();
|
|
}
|
|
|
|
// if not check the model_from's foreign_keys against the model_to's primary keys
|
|
// because that is how the model stores them
|
|
elseif ($current_model_id != null)
|
|
{
|
|
$foreign_keys = count($this->key_to) == 1 ? array($original_model_id) : explode('][', substr($original_model_id, 1, -1));
|
|
$changed = false;
|
|
$new_rel_id = array();
|
|
reset($foreign_keys);
|
|
$m = $this->model_to;
|
|
foreach ($m::primary_key() as $pk)
|
|
{
|
|
if (is_null($model_to->{$pk}))
|
|
{
|
|
$changed = true;
|
|
$new_rel_id = null;
|
|
break;
|
|
}
|
|
elseif ($model_to->{$pk} != current($foreign_keys))
|
|
{
|
|
$changed = true;
|
|
}
|
|
$new_rel_id[] = $model_to->{$pk};
|
|
next($foreign_keys);
|
|
}
|
|
|
|
// if any of the keys changed, reload the relationship - saving the object will save those keys
|
|
if ($changed)
|
|
{
|
|
// Attempt to load the new related object
|
|
if ( ! is_null($new_rel_id))
|
|
{
|
|
$rel_obj = call_user_func(array($this->model_to, 'find'), $new_rel_id);
|
|
if (empty($rel_obj))
|
|
{
|
|
throw new \FuelException('New relation set on '.$this->model_from.' object wasn\'t found.');
|
|
}
|
|
}
|
|
else
|
|
{
|
|
$rel_obj = null;
|
|
}
|
|
|
|
// Add the new relation to the model_from
|
|
$model_from->unfreeze();
|
|
$rel = $model_from->_relate();
|
|
$rel[$this->name] = $rel_obj;
|
|
$model_from->_relate($rel);
|
|
$model_from->freeze();
|
|
}
|
|
}
|
|
|
|
$cascade = is_null($cascade) ? $this->cascade_save : (bool) $cascade;
|
|
if ($cascade and ! empty($model_to))
|
|
{
|
|
$model_to->save();
|
|
}
|
|
}
|
|
|
|
public function delete($model_from, $model_to, $parent_deleted, $cascade)
|
|
{
|
|
if ( ! $parent_deleted)
|
|
{
|
|
return;
|
|
}
|
|
|
|
// break current relations
|
|
$model_from->unfreeze();
|
|
$rels = $model_from->_relate();
|
|
$rels[$this->name] = null;
|
|
$model_from->_relate($rels);
|
|
$model_from->freeze();
|
|
|
|
$cascade = is_null($cascade) ? $this->cascade_delete : (bool) $cascade;
|
|
if ($cascade and ! empty($model_to))
|
|
{
|
|
$model_to->delete();
|
|
}
|
|
}
|
|
}
|