Yii2: Conditional Validator always returns required

Question

I am trying to use Yii2\'s conditional validator as given in the guide like:

Model code

public function rules()
{
   // $discharged = function($model) {          


        

Answer 1

['package_id_fk', 'required', 'when' => function($model) {return $model->type == 'PACKAGE';}, 'enableClientValidation' => false],

It works for me.

Answer 2

Try to add enableClientValidation parameter as the following:

 ['discharge_date', 'required', 'when' => function($model) {
        return $model->discharged == 1;
 }, 'enableClientValidation' => false]

Answer 3

This only worked for me when using the model name (client validation).

['state', 'required', 'when' => function ($model) {
  return $model->country == 'USA';
}, 'whenClient' => "function (attribute, value) {
  return $('#MODELNAMEHERE-country').val() == 'USA';
}"]

Answer 4

i had the similar requirement i solved it using the following code

['discharge_date', 'required', 'whenClient' => function($model) {
        return $model->discharged == 1;
 }, 'enableClientValidation' => false]

Answer 5

It seems that by default Yii2 will do validation in BOTH Server side and Client side. Check the example in Conditional Validation part of Yii2 doc:

['state', 'required', 'when' => function ($model) {
    return $model->country == 'USA';
}, 'whenClient' => "function (attribute, value) {
    return $('#country').val() == 'USA';
}"],

you also need a 'whenClient' code, or as @Alexandr Bordun said, to disable the client validation by 'enableClientValidation' => false.