Question

我是Symphony的总菜鸟，但我正在努力学习。文档无法帮助我解决我遇到的这个特定问题。

我该怎么做：

// if ($products are in userCart) {
//     show those only
// }

我正在努力寻找获取这些信息的方法。我尝试了很多次尝试。

我成功将产品刷新到数据库，我的关联如下：

Association Mappings

我想在showCartAction函数中执行此操作：

$user = $this->getUser();
$em = $this->getDoctrine()->getManager();

//then get the specific products

$products = $em->getRepository(‘ShopBundle:??’)->??

请感谢您的帮助，谢谢您的时间。

Answer 1

假设该实体名为Product：

// Your model, you can use it to fetch products
$productRepository = $em->getRepository('ShopBundle:Product');

// Retrieve all products as an array of objects
$products = $productRepository->findAll();

// Retrieve a specific product as object from its reference (id)
$product = $productRepository->find(1); // Returns product with 'id' = 1

// Retrieve a specific product based on condition(s)
$product = $productRepository->findOneBy(['price' => 10]);

// Retrieve many products based on condition(s)
$products = $productRepository->findBy(['price' => 10]);

检查特定产品是否在UserCart对象中：

$cartRepository = $em->getRepository('ShopBundle:UserCart');

// Fetches the cart by its owner (the current authenticated user)
// assuming UserCart has a $user property that represents an association to your User entity
$cart = $cartRepository->findOneBy(['user' => $this->getUser()]);

// Check if a specific product is in the cart,
// assuming $product is a Product object retrieved like shown above
if ($cart->contains($product)) {
    // Do something
}

有关整个参考，请参阅Doctrine文档中的Working with objects。

我希望这会对你有所帮助如果您需要更多精确度或任何其他信息，请随时发表评论。

修改

要访问对象的属性，请使用其getter：

$cartView = array( 'products' => $cart->getProducts(), // return the property $products 'user' => $cart->getUser(), // return the property $user );

只有方法存在且具有公共访问权限时才可行。

注意在使用像Symfony这样的框架之前，你应该更多地关注OOP并练习它。

从控制器功能中获取数据库中的特定数据

1 个答案: