use paginate() on custom function

Something like this, I use the Query Builder and Model.

PHP Code:

public function get_corsi_modulo($tipologia_corsi = null, $id_argomenti = null)
{
    $db = \Config\Database::connect();
    
    $pager = \Config\Services::pager();
    
    $req="SELECT * FROM ".$this->table." where banned='no' and status='si'";

    if ( ! is_null($tipologia_corsi))
    {
        $req.=" and tipologia_corsi='".$db->escapeString($tipologia_corsi)."'";
    }

    if ( ! is_null($id_argomenti))
    {
        $req.=" and id_argomenti='".$db->escapeString($id_argomenti)."'";
    }

    $query = $db->query($req);

    return $this;
}

// You need to pass them to the view with $data.
$data = [
    'posts' => $posts->getLivePosts()->paginate(3),
    'pager' => $posts->pager,
];

// What ever your view is.
echo view('Insitefx\Blog\Views\posts\index', $data);

$CorsiModel->get_corsi_modulo($params['tipologia'], null)->paginate(10); 


Not sure if this will work with the db query but give it a try.

You also need to add the links in the view file.

PHP Code:

<?= $pager->links() ?>

I just wrote a tutorial on pagination in the CodeIgniter 4 Addins.

Not work! return paginate to all data not ones returned by function!