/**
* Check if value can be assigned to current attribute<br>
*
* If Entity has an ID and attribute 'once' flag is set and attribute has a value assigned to it
* then a new value should not be assigned.
*
* @return bool
*/
protected function canAssign()
{
if ($this->entity->getId()->getValue() && $this->getOnce() && $this->value !== null) {
return false;
}
return true;
}
/**
* Extract EntityAbstract data to array using specified list of attributes.
* If no attributes are specified, only simple and Many2One attributes will be extracted.
* If you need to get One2Many and Many2Many attributes, you need to explicitly specify a list of attributes.
*
* @param array $attributes Ex: 'title,author.name,comments.id,comments.text'
*
* @return array
*/
public function extractData($attributes = [])
{
$checkKey = get_class($this->entity) . '-' . $this->entity->getId();
if (self::$loadedEntities->keyExists($checkKey)) {
return ['__reference__' => true, 'class' => get_class($this->entity), 'id' => $this->entity->getId()->getValue()];
} else {
self::$loadedEntities->key($checkKey, true);
}
if ($this->isEmpty($attributes)) {
$attributes = $this->getDefaultAttributes();
}
$data = [];
$attributes = $this->buildEntityFields($attributes);
foreach ($attributes as $attr => $subAttributes) {
$entityAttribute = $this->entity->getAttribute($attr);
$entityAttributeValue = $entityAttribute->getValue();
$isOne2Many = $this->isInstanceOf($entityAttribute, AttributeType::ONE2MANY);
$isMany2Many = $this->isInstanceOf($entityAttribute, AttributeType::MANY2MANY);
$isMany2One = $this->isInstanceOf($entityAttribute, AttributeType::MANY2ONE);
if ($isMany2One) {
if ($this->isNull($entityAttributeValue)) {
$data[$attr] = null;
continue;
}
if (self::$currentLevel < $this->nestedLevel) {
self::$currentLevel++;
$attrDataExtractor = new EntityDataExtractor($entityAttributeValue, $this->nestedLevel);
$data[$attr] = $attrDataExtractor->extractData($subAttributes);
self::$currentLevel--;
}
} elseif ($isOne2Many || $isMany2Many) {
$data[$attr] = [];
foreach ($entityAttributeValue as $item) {
if (self::$currentLevel < $this->nestedLevel) {
self::$currentLevel++;
$attrDataExtractor = new EntityDataExtractor($item, $this->nestedLevel);
$data[$attr][] = $attrDataExtractor->extractData($subAttributes);
self::$currentLevel--;
}
}
} else {
$data[$attr] = $entityAttribute->getToArrayValue();
}
}
self::$loadedEntities->removeKey($checkKey);
return $data;
}
/**
* Set or get attribute value
*
* @return bool|null|\Webiny\Component\Entity\EntityAbstract
*/
public function getValue()
{
if ($this->isNull($this->value)) {
$query = [$this->relatedAttribute => $this->entity->getId()->getValue()];
$query = array_merge($query, $this->filter);
$callable = [$this->entityClass, 'find'];
$this->value = call_user_func_array($callable, [$query]);
}
return $this->value;
}