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

Try forcing the validation on empty field

['birth_date', 'checkDateFormat', 'skipOnEmpty' => false, 'skipOnError' => false],

Also, make sure you don't assign id to your birth_date field in your view.

If you do have id for your birth_date, you need to specify the selectors

field($model, 'birth_date', ['selectors' => ['input' => '#myBirthDate']])->textInput(['id' => 'myBirthDate']) ?>