How can I use column in laravel eager posts

How can I use ids in laravel eager posts ?

$stocks = WsStock::select([
        'id',
        'industryIndex',
        'nameFA',
        DB::raw('count(industryIndex) as total'),
        DB::raw('GROUP_CONCAT( id SEPARATOR ",") as ids')
    ])
    ->with([
        'posts' => function ($query) use ($userId) {
            /* is here ids ???? */
            $query->whereUserId($userId);
            $query->where('ppa', '!=', null);
        },
        'indice' => function ($query) use ($userId) {}
    ])
    ->whereHas('posts', function ($query) use ($userId) {
        /* is here ids ???? */
        $query->whereUserId($userId);
        $query->where('ppa', '!=', null);
    })
    ->groupBy('industryIndex')->get();

in code must one result for post. please help

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