Yii2: how to use custom validation function for activeform?

Question

In my form\'s model, I have a custom validation function for a field defined in this way

class SignupForm extends Model
{
    public function rules()
    {
          


        

Answer 1

I stumbled on this when using the CRUD generator. The generated actionCreate() function doesn't include a model validation call so custom validators never get called. Also, the _form doesn't include and error summary.

So add the error summary to the _form.

errorSummary($model); ?>

...and add the validation call - $model->validate() - to the controller action

public function actionCreate()
{
    $model = new YourModel();

    if ($model->load(Yii::$app->request->post()) && $model->validate()) {...