How to authenticate on phonegap?

Question

Yii

How to authenticate on phonegap? For the user to enter a username and password and become authenticated.
There is a server on yii2
For example, there is a controller

class User {
 public function actionLogin()
    {
        $model = new LoginForm();
        if (Yii::$app->request->isAjax) {
            $model->load($_POST);
            Yii::$app->response->format = Response::FORMAT_JSON;
            return ActiveForm::validate($model);
        }
        if ($model->load(Yii::$app->request->post()) && $model->login()) {
            return $this->goBack();
        } else {
            return $this->render('login', [
                'model' => $model
            ]);
        }
    }
}

view

<?php $form = ActiveForm::begin(['id' => 'login-form']); ?>
                <?= $form->field($model, 'identity') ?>
                <?= $form->field($model, 'password')->passwordInput() ?>
                <?= $form->field($model, 'rememberMe')->checkbox() ?>
                <div style="color:#999;margin:1em 0">
                    <?php echo Yii::t('frontend', 'If you forgot your password you can reset it <a href="{link}">here</a>', [
                        'link'=>yii\helpers\Url::to(['sign-in/request-password-reset'])
                    ]) ?>
                </div>
                <div class="form-group">
                    <?= Html::submitButton(Yii::t('frontend', 'Login'), ['class' => 'btn btn-primary', 'name' => 'login-button']) ?>
                </div>
              
                
            <?php ActiveForm::end(); ?>