October cms - Eloquent - Issues in creating model query from sql query - mysql

Question

I have a sql query that is working ok
SELECT
*
FROM
jml_gkb_eventos
WHERE
id IN (SELECT
evento_id
FROM
jml_gkb_etiqueta_evento
WHERE
etiqueta_id IN (SELECT
id
FROM
jml_gkb_etiquetas
WHERE
etiqueta REGEXP ? ) group by evento_id having count(evento_id) = ?);
But i can't figure out how convert this sql query to Eloquent model query. I know that i'm near solution (related with this problem here) and tried some variations of the following code:
$pesquisa = preg_split('/\s+/', $temp, -1, PREG_SPLIT_NO_EMPTY);
$cadeiapesquisa = implode('|', $pesquisa);
$contagem = count($pesquisa);
if (Session::get('modo') == 0){
if ( strlen($cadeiapesquisa) > 0 ){
$this['records'] = Evento::with('etiquetas')->whereHas('etiquetas', function($query) use ($cadeiapesquisa, $contagem){
$query->where('etiqueta', 'regexp', "$cadeiapesquisa")->groupBy('evento_id')->having('COUNT(evento_id) = '.$contagem);
})->orderBy('id', 'DESC')->paginate(25);
} else {
$this['records'] =Evento::paginate(25);
}
}
I get it working without the ->having() part in inner query, obviosly without the expected return, but without errors.
What i'm doing wrong ?
TIA
JL
[EDIT] - With the code above i get the following error:

Answer 1

I found the problem. It is with the 'count()' part not being processed by eloquent. Placing the count on DB::raw is working as expected at least with the tests i've done. The whole snipet of code with some adjustements is:
$pesquisa = preg_split('/\s+/', $temp, -1, PREG_SPLIT_NO_EMPTY);
$cadeiapesquisa = implode('|', $pesquisa);
$contagem = count($pesquisa);
if (Session::get('modo') == 0){
if ( strlen($cadeiapesquisa) > 0 ){
$this['records'] = Evento::with('etiquetas')->whereHas('etiquetas', function($query) use ($cadeiapesquisa, $contagem){
$query->where('etiqueta', 'regexp', "$cadeiapesquisa")->groupBy('evento_id')->having(DB::raw("COUNT('etiqueta_id')"), '>=', $contagem );
})->paginate(25);
} else {
$this['records'] = Evento::paginate(25);
}
}
JL