How to count the number of records in related tables, via ActiveRecord?

Question

Yii

I have three tables.
table1->hasMany(table2)->hasMany(table3);
How it is possible to receive an amount of records in the third table if to make in the first selection under conditions.?

Answer 1

class User ....
    public function getNapravlenie(){
        return $this->hasMany(Napravlenie::className(),['historyID'=>'id']);
    }

    public  function  getAnaliz(){
        return $this->hasMany(CheckAnaliz::className(), ['napravlenieID' => 'id'])->via('napravlenie');
    }

   public  function  getAnalizCount(){
        return count($this->analiz);
    }
....

somewhere

$users = Users::find()->with(['analiz','napravlenie'])->all();
foreach($users as $one){
    echo $one->id . " = " . $one->analizCount;
}

Answer 2

joinWith() && count()
Task context and code examples are needed, it's hard to tell anything without them