Why is the data from the server not in json format?

Question

JavaScript

Hello.
I send the modal form data to the server like this:

$('body').on('submit', '.modal-form', function (e) {
        e.preventDefault();
        var form = $(this);
        $.ajax({
            url: '" . Url::to(['submitmodal']) . "',
            type: 'POST',
            data: form.serialize(),
            success: function (result) {
                setTimeout(function() { $('#my-modal').modal('hide');}, 500);
                var id = result.id;
                var type = result.type;
                $('#dropDownList-types').append('<option value='+id+'>'+type+'</option>');
            },
            error: function () {
                alert('error in ajax modal submit');
            }
        });
    });

Controller

public function actionSubmitmodal() 
    {
        $model = new Typecostauto();
        Yii::$app->response->format = \yii\web\Response::FORMAT_JSON;
        if ($model->load(Yii::$app->request->post())) {
            if ($model->save()) {
                return ['id' => $model->id, 'type' => $model->Type];
            }
            else 
                return ['id' => 'fail'];
        }
        else 
        return $this->renderPartial('modal', [
            'model' => $model,
        ]);
    }

In the controller, I indicated that I want to send JSON data, and if dataType: 'json' then nothing works.

Answer 1

1. Why renderPartial and not renderAjax?
2. To put your render into json, you need to do this:

Yii::$app->response->format = \yii\web\Response::FORMAT_JSON;
$myvar = $this->renderAjax('modal', [
            'model' => $model,
        ]);
return yii\helpers\Json::encode($myvar);

and watch debug for errors if it doesn't work

Answer 2

Inside $.ajax specifydataType: 'json'

Answer 3

What version of OpenCV do you have installed?
There is no such method in OpenCV 3.0 and in version 2.x, too, in my opinion, there was no such method. Try as described here .
It's strange that your module is called cv and not cv2.