$relatedRecords public read-only property An array of

__isset() public method Checks if a property value is

populateRelation() public method Populates the named relation

setIsNewRecord() public method Sets the value indicating

hasMany() public method Declares a has-many

afterDelete() public method This method is invoked after

EVENT_BEFORE_UPDATE event of type yii\base\ModelEvent

updateCounters() public method Updates one or several

getOldAttributes() public method Returns the old attribute

EVENT_BEFORE_INSERT event of type yii\base\ModelEvent