yii2-bootstrap/apps/advanced/frontend/controllers/SiteController.php

<?php

namespace frontend\controllers;

use Yii;
use yii\web\Controller;
use common\models\LoginForm;
use frontend\models\ContactForm;
use common\models\User;
use yii\web\HttpException;
use frontend\models\SendPasswordResetTokenForm;

class SiteController extends Controller
{
	public function actions()
	{
		return array(
			'captcha' => array(
				'class' => 'yii\web\CaptchaAction',
			),
		);
	}

	public function actionIndex()
	{
		return $this->render('index');
	}

	public function actionLogin()
	{
		$model = new LoginForm();
		if ($model->load($_POST) && $model->login()) {
			return $this->redirect(array('site/index'));
		} else {
			return $this->render('login', array(
				'model' => $model,
			));
		}
	}

	public function actionLogout()
	{
		Yii::$app->user->logout();
		return $this->redirect(array('site/index'));
	}

	public function actionContact()
	{
		$model = new ContactForm;
		if ($model->load($_POST) && $model->contact(Yii::$app->params['adminEmail'])) {
			Yii::$app->session->setFlash('contactFormSubmitted');
			return $this->refresh();
		} else {
			return $this->render('contact', array(
				'model' => $model,
			));
		}
	}

	public function actionAbout()
	{
		return $this->render('about');
	}

	public function actionSignup()
	{
		$model = new User();
		$model->setScenario('signup');
		if ($model->load($_POST) && $model->save()) {
			if (Yii::$app->getUser()->login($model)) {
				$this->redirect('index');
			}
		}

		return $this->render('signup', array(
			'model' => $model,
		));
	}

	public function actionResetPassword($token = null)
	{
		if ($token) {
			$model = User::find(array(
				'password_reset_token' => $token,
				'status' => User::STATUS_ACTIVE,
			));

			if (!$model) {
				throw new HttpException(400, 'Wrong password reset token.');
			}

			$model->scenario = 'resetPassword';
			if ($model->load($_POST) && $model->save()) {
				// TODO: confirm that password was successfully saved
				$this->redirect('index');
			}

			$this->render('resetPassword', array(
				'model' => $model,
			));
		}
		else {
			$model = new SendPasswordResetTokenForm();
			if ($model->load($_POST) && $model->sendEmail()) {
				// TODO: confirm that password reset token was sent
				$this->redirect('index');
			}
			$this->render('sendPasswordResetTokenForm', array(
				'model' => $model,
			));
		}
	}
}