This method is called by AttributeBehavior::evaluateAttributes. Its return value will be assigned
to the attributes corresponding to the triggering event.
/**
* @inheritdoc
*/
protected function getValue($event)
{
if ($this->attribute !== null) {
if ($this->isNewSlugNeeded()) {
$slugParts = [];
foreach ((array) $this->attribute as $attribute) {
$slugParts[] = $this->owner->{$attribute};
}
$slug = $this->generateSlug($slugParts);
} else {
return $this->owner->{$this->slugAttribute};
}
} else {
$slug = parent::getValue($event);
}
return $this->ensureUnique ? $this->makeUnique($slug) : $slug;
}
/**
* @inheritdoc
*/
protected function getValue($event)
{
$isNewSlug = true;
if ($this->attribute !== null) {
$attributes = (array) $this->attribute;
/* @var $owner BaseActiveRecord */
$owner = $this->owner;
if (!empty($owner->{$this->slugAttribute})) {
$isNewSlug = false;
if (!$this->immutable) {
foreach ($attributes as $attribute) {
if ($owner->isAttributeChanged($attribute)) {
$isNewSlug = true;
break;
}
}
}
}
if ($isNewSlug) {
$slugParts = [];
foreach ($attributes as $attribute) {
$slugParts[] = $owner->{$attribute};
}
$slug = $this->generateSlug($slugParts);
} else {
$slug = $owner->{$this->slugAttribute};
}
} else {
$slug = parent::getValue($event);
}
if ($this->ensureUnique && $isNewSlug) {
$baseSlug = $slug;
$iteration = 0;
while (!$this->validateSlug($slug)) {
$iteration++;
$slug = $this->generateUniqueSlug($baseSlug, $iteration);
}
}
return $slug;
}
/**
* @inheritdoc
*
* In case, when the [[value]] is `null`, the result of the PHP function [time()](http://php.net/manual/en/function.time.php)
* will be used as value.
*/
protected function getValue($event)
{
if ($this->value === null) {
return time();
}
return parent::getValue($event);
}
/**
* @inheritdoc
*
* In case, when the [[value]] property is `null`, the value of `Yii::$app->user->id` will be used as the value.
*/
protected function getValue($event)
{
if ($this->value === null) {
$user = Yii::$app->get('user', false);
return $user && !$user->isGuest ? $user->id : null;
}
return parent::getValue($event);
}
/**
* @inheritdoc
*
* In case, when the [[value]] is `null`, position of last created entity or default value
* will be used as value.
*/
protected function getValue($event)
{
if ($this->value === null) {
if (!$this->owner instanceof ActiveRecordInterface) {
throw new \LogicException('Owner should be instanceof ActiveRecordInterface');
}
if (!($last = $this->owner->find()->orderBy([$this->positionAttribute => SORT_DESC])->one())) {
return $this->defaultValue;
}
return $last->{$this->positionAttribute} + 1;
}
return parent::getValue($event);
}
/**
* @inheritdoc
*
* In case, when the [[value]] is `null`, the result of the PHP function [time()](http://php.net/manual/en/function.time.php)
* will be used as value.
*/
protected function getValue($event)
{
if ($this->value === null) {
return \Yii::$app->user->id;
}
return parent::getValue($event);
}