great job on this do you have a demo for this

I upgraded Yii2 to version 2.0.16-dev, and the events does not work.

https://github.com/beastbytes/yii2-wizard/blob/master/WizardBehavior.php#L164

Problem:
https://github.com/yiisoft/yii2/blob/master/framework/base/Component.php#L518

I use example, but return empty page

   public function quizWizardStep($event)
    {
        $modelName = 'app\models\wizard\quiz\Question';
        $model = new $modelName(['question' => $this->questions[$event->n]]);
        $t = count($this->questions);
        debug($model);
        if ($model->load(Yii::$app->request->post()) && $model->validate()) {
            $event->data     = $model;
            $event->nextStep = ($event->n < $t - 1
                ? WizardBehavior::DIRECTION_REPEAT
                : WizardBehavior::DIRECTION_FORWARD
            );
            $event->handled  = true;
        } else {
          
            $event->data = $this->render('quiz\question', compact('event', 'model', 't'));
              
        }
        
      
    }

    public function actionQuiz($step = null)
    {
        //if ($step===null) $this->resetWizard();
        return $this->step($step);
    }

perhaps the page does not return if to output a variable $event->data , it contains the page code

The line 273 of WizardBehaviour generate error when error_reporting in php.ini set to E_ALL. Undefined variable $step.

if (isset($this->_session[$this->_stepDataKey][$step][$this->_session[$this->_indexKey]])) {
$event->stepData = $this->_session[$this->_stepDataKey][$step][$this->_session[$this->_indexKey]];
}


Changing to

if (isset($this->_session[$this->_stepDataKey][$step]) && isset($this->_session[$this->_stepDataKey][$step][$this->_session[$this->_indexKey]])) {
$event->stepData = $this->_session[$this->_stepDataKey][$step][$this->_session[$this->_indexKey]];
}

solve my troubles.

Hi, thanks for writing this extension. I'm having trouble obtaining a previous event model. I want to obtain a previous event model during one of the following events.. I've tried using $event->sender->read(), but this is all Private Data constructs.. Is there an easier way to do this than writing the data to a file like in your example for the registration? I realize I can add the model to my own session variable during the registerWizardStep function, but I don't see the need to increase the session storage.. Is there an easier way?

I need to make a surveys which would be generated by for example SurveyQuestion model records wich are related to Survey model.

H!
Thanks for adapting your popular extension to Yii2

I have not been able to get this extension to work .
I have done everything I could do like the examples suggest, particularly the registration example but yet I have these problemes:

1) I cannot even run step 1 of my forms. I get the following error:

  PHP Notice – yii\base\ErrorException 
Undefined index: stepone

  if (isset($this->_session[$this->_stepDataKey][$step][$this->_session[$this->_indexKey]])) {
                $event->stepData = $this->_session[$this->_stepDataKey][$step][$this->_session[$this->_indexKey]];
            }

It is line n° 273 of the WizardBehavior.

2) Also, the url it shows is:
.../submission?step=stepone
(submission is my action) which is very far from beeing a pretty Url.

What am I doing wrong?
Can please someone help me?

Author widget idiot.
Your expansion, even from the example that is available in source code does not work ?? This example is written as a widget fuck.

controller code

            $config = [
                'steps' => ['profile', 'region', 'photo'],
                'events' => [
                    WizardBehavior::EVENT_WIZARD_STEP => [$this, $action->id.'WizardStep'], 
                    WizardBehavior::EVENT_AFTER_WIZARD => [$this, $action->id.'AfterWizard'], 
                    WizardBehavior::EVENT_INVALID_STEP => [$this, 'invalidStep'],
                ]
            ];
            $config['class'] = WizardBehavior::className();
            $this->attachBehavior('wizard', $config);

view code

<?= WizardMenu::widget( .............. ); ?>

I want to design an I18N site , So I need to change step's label name to other language in the view , but step's key name needn't change , how to do it ?

When step model has conditional validation callback function (https://github.com/yiisoft/yii2/blob/master/docs/guide/input-validation.md#user-content-conditional-validation-) the wizard end() its work and redirect to invalidStep.

Hi, thanks for your extension, it's really nice.

I have experienced some issues in the "saveStep" function and I thought I would share it with everyone.
Basically I have noticed that the data stored in the session was not always updating when submitting the forms.
I've had to unset the variable in the session before updating the data, as you can see below:

WizardBehavior.php

protected function saveStep($step, $data)
    {
        if (!isset($this->_session[$this->_stepDataKey][$step])) {
            $this->_session[$this->_stepDataKey][$step] = new \ArrayObject;
        }
        unset($this->_session[$this->_stepDataKey][$step]);
        $this->_session[$this->_stepDataKey][$step][] = $data;
    }

After this update things seems working fine.