How to fix yii2 file validation error?

Question

Yii

It is not clear what the mistake is who faced.
the form

<?php
    $form = ActiveForm::begin([
                'id' => $model->formName(),
                'enableAjaxValidation' => true,
                'validationUrl' => Url::toRoute('validation-certificate-form'),
                'action' => Url::toRoute('certificate-form'),
                'options' => ['enctype' => 'multipart/form-data'],
        
    ]);
    ?>

public function rules() {
        return [
                [[
          'club_id',
 
            ], 'required'],
                ['certificate_code', 'unique', 'targetClass' => '\common\models\Certificate'],
   [['certificate_file'], 'file', 'extensions' => ['png', 'jpg'], 'skipOnEmpty' => false ]
        ];
    }

public function actionCertificateForm() {

        $modelCertificateForm = new CertificateForm();

        if ($modelCertificateForm->load(Yii::$app->request->post())) {

            $modelCertificateForm->certificate_file = UploadedFile::getInstance($modelCertificateForm, 'certificate_file');


            if ($modelCertificateForm->validate()) {

                if ($modelCertificateForm->save() && $modelCertificateForm->upload()) {


                    Yii::$app->session->setFlash('success', 'Сертификат успешно создан.');
                    return $this->refresh();
                } else {
                    var_dump($modelCertificateForm->upload())  ; die();
                    Yii::$app->session->setFlash('error', 'Ошибка сохранения сертификата.');
                    return $this->render('index', ['model' => $modelCertificateForm]);
                }
            } else {
                return $this->render('index', ['model' => $modelCertificateForm]);
            }
        } else {
            return $this->render('index', ['model' => $modelCertificateForm]);
        }
    }

when adding a file, add file is displayed. After we remove 'enableAjaxValidation' => true, client-side validation is fine. How to fix it? or remove Ajax validation for a file?

Answer 1

With ajax validation, the file is not transferred, so the error.
I think the problem is that you are not uploading the file correctly. You need to have a public variable file in the model into which the file itself will fall, remove 'skipOnEmpty' => false from it, and set the certificate_file validator string into which the file name will fall and now make it mandatory, since you will get into the database just the name, not the whole file.
Example here:
www.yiiframework.com/doc-2.0/guide-input-file-uplo...