unlink() public method Destroys the relationship between

$oldPrimaryKey public read-only property The old primary

hasMany() public method Declares a has-many

populateRelation() public method Populates the named relation

afterDelete() public method This method is invoked after

getOldAttributes() public method Returns the old attribute

EVENT_BEFORE_INSERT event of type yii\base\ModelEvent

EVENT_AFTER_FIND event of type yii\base\Event

setIsNewRecord() public method Sets the value indicating

EVENT_BEFORE_UPDATE event of type yii\base\ModelEvent