/**
  * @return \yii\db\ActiveQuery
  */
 public function getRubrics()
 {
     return $this->hasMany(Rubric::className(), ['subcategory_id' => 'id']);
 }
 /**
  * @return \yii\db\ActiveQuery
  */
 public function getRubric()
 {
     return $this->hasOne(Rubric::className(), ['id' => 'rubric_id']);
 }