/**
* @param $relation_name
* @param Model $object
* @param bool $remove_relation
* @return bool
* @throws Exception
* @throws Wave\Exception
*/
public function _removeRelationObject($relation_name, Model $object, $remove_relation = true)
{
if (isset($this->_data[$relation_name])) {
foreach ($this->_data[$relation_name] as $key => $relation) {
if ($relation->_getFingerprint() === $object->_getFingerprint()) {
//Unset
unset($this->_data[$relation_name][$key]);
//Renumber (so it doesn't accidentally map later down the track).
$this->_data[$relation_name] = array_values($this->_data[$relation_name]);
}
}
}
if ($remove_relation) {
$relation_data = $this->_getRelation($relation_name);
switch ($relation_data['relation_type']) {
case Relation::MANY_TO_MANY:
$related_class = $relation_data['related_class'];
$db = Wave\DB::get($related_class::_getDatabaseNamespace());
$query = $db->from($related_class, $from_alias);
//Add in all of the related columns
foreach ($relation_data['local_columns'] as $position => $local_column) {
//At this point, may as well return as there aren't null-relations
if ($this->_data[$local_column] === null) {
return false;
}
$query->where(sprintf('%s.%s = ?', $from_alias, $db->escape($relation_data['related_columns'][$position])), $this->_data[$local_column]);
}
//Add in all of the related columns
foreach ($relation_data['target_relation']['related_columns'] as $position => $related_column) {
//At this point, may as well return as there aren't null-relations
if ($object->{$related_column} === null) {
return false;
}
$query->where(sprintf('%s.%s = ?', $from_alias, $db->escape($relation_data['target_relation']['local_columns'][$position])), $object->{$related_column});
}
if ($rc = $query->fetchRow()) {
return $rc->delete();
}
break;
case Relation::ONE_TO_MANY:
foreach ($relation_data['related_columns'] as $position => $related_column) {
$object->{$related_column} = null;
}
return $object->save();
break;
}
}
}
