D'

$builder = Model::where('....');
$sql = $builder->toSql();
$bindings = $builder->getBindings();
foreach ($bindings as $binding) {
  $value = is_numeric($binding) ? $binding : "'".$binding."'";
  $sql = preg_replace('/\?/', $value, $sql, 1);
}

echo $sql;

<?php $fi=$find->where('c_id_group_item', $gr->c_id_group); ?>

'guards' => [
    'api' => [
        'driver' => 'cent',
        'provider' => 'users',
    ],
],

<?php

class MyModel extends Model {
  protected $dates = ['signed_at'];
}

// ....

$model = MyModel::first();
echo $model->signed_at->format('d.m.Y H:i:s');

function __construct() {
  $this->middleware('auth', ['only' => ['create', 'store']]);
}