/**
* @param Model $model
* @return $this
* @throws \InvalidArgumentException
* @throws \BadMethodCallException
*/
public function remove($model)
{
/** @var Model[] $list */
if ($model instanceof QuerySet) {
$list = $model;
} else {
$list = func_get_args();
}
if ($this->ownerField instanceof SingleRelation) {
foreach ($list as $model) {
if ($model->isNewRecord()) {
throw new \InvalidArgumentException('Cant remove record that is not saved');
}
$model->__unset($this->ownerField->to_field);
$model->save();
}
} elseif ($this->ownerField instanceof ManyToManyRelation) {
if ($this->ownerField->throughClass) {
$throughClass = $this->ownerField->throughClass;
$in = [];
foreach ($list as $model) {
if ($model->isNewRecord()) {
throw new \InvalidArgumentException('Cant remove record that is not saved');
}
$in[] = $model->__get($this->ownerField->to_field);
}
foreach ($throughClass::objects()->filter([$this->ownerField->to_field . '__in' => $in]) as $link) {
$link->delete();
}
}
} else {
throw new \BadMethodCallException('Cant modify query set for field ' . $this->ownerField->name);
}
//$this->resetStatement();
return $this;
}
/**
* @param \Dja\Db\Model\Model $model
* @return \Dja\Db\Model\Query\QuerySet
*/
public function getRelation(\Dja\Db\Model\Model $model)
{
/** @var \Dja\Db\Model\Model $relationClass */
$relationClass = $this->relationClass;
/** @var \Dja\Db\Model\Model $throughClass */
$throughClass = $this->throughClass;
if ($throughClass) {
$in = $throughClass::objects()->filter([$this->self_field => $model->__get($this->self_field)])->valuesList($this->to_field, false);
} else {
$sql = sprintf('SELECT "%s" FROM "%s" WHERE "%s" = %d', $this->to_field, $this->db_table, $this->self_field, $model->__get($this->self_field));
//$in = $relationClass::objects()->setRawSql($sql)->valuesDict($this->to_field, $this->to_field);
$in = Expr($sql);
}
if ($this->limit_choices_to) {
$filter = $this->limit_choices_to;
$filter[$this->to_field . '__in'] = $in;
return $relationClass::objects()->relation($model, $this)->filter($filter);
} else {
return $relationClass::objects()->relation($model, $this)->filter([$this->to_field . '__in' => $in]);
}
}
/**
* dispatch global and local model events
* no event objects created if no listeners attached
* return false if some event stop propagation (means u need to cancel dependent actions)
* @param string $eventName
* @return bool
*/
protected function eventDispatch($eventName)
{
if (Model::events()->hasListeners($eventName)) {
$e = new Event($this);
Model::events()->dispatch($eventName, $e);
if ($e->isPropagationStopped()) {
return false;
}
}
if ($this->metadata->events()->hasListeners($eventName)) {
if (!isset($e)) {
$e = new Event($this);
}
$this->metadata->events()->dispatch($eventName, $e);
if ($e->isPropagationStopped()) {
return false;
}
}
return true;
}
/**
* @param \Dja\Db\Model\Model $model
* @return \Dja\Db\Model\Model
*/
public function getRelation(\Dja\Db\Model\Model $model)
{
/** @var \Dja\Db\Model\Model $relationClass */
$relationClass = $this->relationClass;
$value = $model->__get($this->db_column);
if (!empty($value)) {
$inst = $relationClass::objects()->filter([$this->to_field => (int) $value])->current();
return $inst;
} else {
return $this->default;
}
}