public function actionIndex()
{
Yii::$app->session['step'] = 1;
if (Yii::$app->request->get('type') && Yii::$app->request->get('product_id')) {
$type = Yii::$app->request->get('type');
$productId = Yii::$app->request->get('product_id');
$product = Product::findOne($productId);
$cartProduct = Cart::find()->where(['session_id' => Yii::$app->session->id, 'product_id' => $productId])->one();
if ($type == 'minus' && $cartProduct->number > 1) {
//减少一个
Cart::updateAllCounters(['number' => -1], ['session_id' => Yii::$app->session->id, 'product_id' => $productId]);
} elseif ($type == 'add' && $cartProduct->number < $product->stock) {
//增加一个
Cart::updateAllCounters(['number' => 1], ['session_id' => Yii::$app->session->id, 'product_id' => $productId]);
} elseif ($type == 'change' && Yii::$app->request->get('value')) {
//修改为指定的数量
$productId = Yii::$app->request->get('change');
$value = Yii::$app->request->get('value');
Cart::updateAll(['number' => $value], ['session_id' => Yii::$app->session->id, 'product_id' => $productId]);
}
Cart::deleteAll('number <= 0');
return;
}
$products = Cart::find()->where(['or', 'session_id = "' . Yii::$app->session->id . '"', 'user_id = ' . (Yii::$app->user->id ? Yii::$app->user->id : -1)])->all();
if (count($products)) {
// 如果购物车的数量大于商品的库存，则设置为最大的库存
return $this->render('index', ['products' => $products]);
} else {
return $this->render('cart-no-product', ['products' => $products]);
}
}
/**
* This method is called after the user is successfully logged in.
* The default implementation will trigger the [[EVENT_AFTER_LOGIN]] event.
* If you override this method, make sure you call the parent implementation
* so that the event is triggered.
* @param IdentityInterface $identity the user identity information
* @param boolean $cookieBased whether the login is cookie-based
* @param integer $duration number of seconds that the user can remain in logged-in status.
* If 0, it means login till the user closes the browser or the session is manually destroyed.
*/
protected function afterLogin($identity, $cookieBased, $duration)
{
$carts = Cart::find()->where(['session_id' => $this->oldSessionId])->all();
foreach ($carts as $cart) {
$exist = Cart::find()->where(['user_id' => $identity->id, 'product_id' => $cart->product_id])->one();
if ($exist) {
Cart::updateAllCounters(['number' => $cart->number], ['user_id' => $identity->id]);
Cart::deleteAll(['session_id' => $this->oldSessionId, 'product_id' => $cart->product_id]);
} else {
Cart::updateAll(['session_id' => Yii::$app->session->id, 'user_id' => $identity->id], ['session_id' => $this->oldSessionId, 'product_id' => $cart->product_id]);
}
}
Cart::updateAll(['session_id' => Yii::$app->session->id], ['user_id' => $identity->id]);
//Cart::updateAll(['session_id' => Yii::$app->session->id, 'user_id' => $identity->id], ['session_id' => $this->oldSessionId]);
return parent::afterLogin($identity, $cookieBased, $duration);
}