/**
* Extract the model instance and model keys from the given parameters.
*
* @param string|\Illuminate\Database\Eloquent\Model|\Illuminate\Database\Eloquent\Collection $model
* @param array|null $keys
* @return array
*/
public static function extractModelAndKeys($model, array $keys = null)
{
if (is_null($keys)) {
if ($model instanceof Model) {
return [$model, [$model->getKey()]];
}
if ($model instanceof Collection) {
return [$model->first(), $model->modelKeys()];
}
} else {
if (is_string($model)) {
$model = new $model();
}
return [$model, $keys];
}
}