模态窗口中的Yii2表单

Question

I would like to understand the basics of how to work with form from Modal window in Yii2? This is my current understanding and I will be grateful if someone can explain me what I missed. So, I have a ListView with records. Each record contains a button. The button opens a Modal with a Form inside:

echo Html::a('<span class="glyphicon glyphicon-bell" aria-hidden="true"></span>', ['#'],[
                         'id' => $model->id,
                         'class' => 'linkbutton',
                         'data-toggle'=>'modal',
                         'data-tooltip'=>'true',
                         'data-target'=>'#submit_vote'.$model->id,
                         'title'=> 'Assign'
                     ]);

                Modal::begin([
                    'size' => 'modal-lg',
                    'options' => [
                        'id' => 'submit_vote'.$model->id,
                    ],
                    'header' => '<h2>Create Vote</h2>',
                    'footer' => 'Footer'
                ]);

                ActiveForm::begin([
                    'action' => 'vote/vote',
                    'method' => 'post',
                    'id' => 'form'.$model->id
                ]);

                echo Html::input(
                        'type: text',
                        'search',
                        '',
                        [
                            'placeholder' => 'Search...',
                            'class' => 'form-control'
                        ]
                );

                echo Html::submitButton(
                        '<span class="glyphicon glyphicon-search"></span>',
                        [
                            'class' => 'btn btn-success',
                        ]
                );
                ActiveForm::End();
                Modal::end();

In Form 'action' I wrote vote/vote and method post. So I expect post data inside actionVote function of my VoteController.

public function actionVote()
    {
        if (Yii::$app->request->post()) {
        $id = Yii::$app->request->post('search');
        Yii::$app->session->setFlash('error', $id);
        return true; 
        }
    }

For submitting I use an ajax:

$('form').on('submit', function () {
    alert($(this).attr('id')+$(this).attr('action')+$(this).serialize());  //just to see what data is coming to js
    if($(this).attr('id') !== 'searchForm') {  //some check
            $.ajax({
            url: $(this).attr('action'),
            type: 'post',
            data: $(this).serialize(),
            success: function(){
                $("#submit_vote15").modal('hide'); //hide popup  
            },
        });  
        return false;
    }

But after click on Submit form I see two alerts. Modal also not hidden. Flash message also is not showed. What I am doing wrong? Can anyone clearly explain a step by step procedure of data flow? For now my understanding is:

1. Open Modal;
2. Click Form Submit inside Modal;
3. Load data via ajax to controller action;
4. catch data from post and execute controller action code; What I missed?

Answer 1

I see a few problems, first you're using on submit event, so yii fires once the event and the browser a second time (that's the reason the alert shows twice), you should use the beforeSubmit event. Second, the message doesn't appear because you're not rendering it again, your just setting it in your controller. To close the modal you should change your code to

$(".modal").modal('hide'); 

A usefull link is this