Why doesn't the Count(*) as?

So I write

 ->select(['fl_serial.*,fl_watch.*,COUNT(fl_watch.active=1) AS total_count'])

then the process as

foreach($top as $post){

get `Getting unknown property: common\models\Watch::total_count` how to process `COUNT( * ) AS total_count`
July 9th 19 at 13:43
1 answer
July 9th 19 at 13:45
apparently in model Watch no properties total_count, accordingly it is necessary to add:
public $total_count;

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