/**
* 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() && $this->value !== null) {
return false;
}
return true;
}
/**
* Set or get attribute value
*
* @return bool|null|\Webiny\Component\Entity\EntityAbstract
*/
public function getValue()
{
if ($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;
}
/**
* Get default list of entity attributes.<br>
* Only simple and Many2One attributes are considered to be default attributes.
*
* @return string
*/
private function getDefaultAttributes()
{
$attributes = [];
foreach ($this->entity->getAttributes() as $name => $attribute) {
$isOne2Many = $this->isInstanceOf($attribute, AttributeType::ONE2MANY);
$isMany2Many = $this->isInstanceOf($attribute, AttributeType::MANY2MANY);
if ($isOne2Many || $isMany2Many) {
continue;
}
$attributes[] = $name;
}
return $this->arr($attributes)->implode(',')->val();
}
