How can I valid random names fields in Yii? - yii2

Question

I have a lot of fields generated from loops. I would like to validate them through validation rules (integer). I don't know how to throw so many fields with random names into the model to the rules () function. How can I validate fields without a model?
View:
<?= Html::input('number', 'file[' . $indexRow . ']' . '[' . $indexCell . ']', $cell, $options = ['class' => 'form-control', 'filter' => 'intval', 'integer']) ?>
Controller:
` public function actionEdit($fileName)
{
$siteHelper = new SiteHelper();
$editForm = new EditForm();
$preparedRows = $siteHelper->prepareRows($fileName);
$preparedHTML = '';
if (Yii::$app->request->isPost) {
$post = Yii::$app->request->post();
if (isset($post['file'])) {
$dataFile = $post['file'];
$preparedRows = $siteHelper->updateExcelFile($fileName, $dataFile);
Yii::$app->session->setFlash('success', 'Plik został zaktualizowany!');
} else if (isset($post['EditForm'])) {
$events = $post['EditForm']['events'];
$preparedHTML = $siteHelper->prepareHTML($events, $preparedRows, $fileName);
Yii::$app->session->setFlash('success', 'Wygenerowano plik PDF!');
}
}
$viewParameters = [
'rows' => $preparedRows,
'editForm' => $editForm,
'scoreHTML' => $preparedHTML,
'downloadLink' => Url::toRoute(['site/download', 'fileName' => $fileName])
];
return $this->render('edit', $viewParameters);
}`
Model:
`
class EditForm extends Model
{
public $events;
public function rules()
{
return [
[['events'], 'required'],
['events', 'integer'],
];
}
}`

Answer 1

When you have an array you can use each validator:
https://www.yiiframework.com/doc/api/2.0/yii-validators-eachvalidator
The validation function should be:
public function rules()
{
return [
[['events'], 'each', 'rule' => ['required']],
[['events'], 'each', 'rule' => ['integer']],
];
}
You may need to avoid multidemnsional array in html and render the field like this:
<?= Html::input('number', 'file[' . $indexRow . '-' . $indexCell . ']', $cell, $options = ['class' => 'form-control', 'filter' => 'intval', 'integer']) ?>
later you can "explode" the row cell index (isn't it supposed to be col?) to identify the row and the column.
$rowCellIndecies = explode('-', $rowCellIndex);
explode function: https://www.php.net/manual/en/function.explode.php