zend expressive - zend数据库

Question

我正在尝试使用zend expressive，并正在研究如何使用数据库。我在看this，但不清楚。我使用composer安装了zend-db，它提到了在dependencies.global.php中添加一行，然后在工厂类中使用容器来获取适配器，但随后没有讨论如何在实际的操作类中访问它，所以我不知道发生了什么，因为适配器对象超出了其他类的作用域。

有没有人从头到尾都有好的和清晰的例子来实际连接和查询sql？

Answer 1

尝试通过工厂注入你的db类，在骨架应用上学习示例，你可以这样做：

HomePageFactory.php

    public function __invoke(ContainerInterface $container)
{
    $router   = $container->get(RouterInterface::class);
    $template = $container->has(TemplateRendererInterface::class) ? $container->get(TemplateRendererInterface::class) : null;

    $adapter    = $container->get( Adapter::class );
    $usersTable = $container->get( Table\UsersTable::class );


    return new HomePageAction($router, $template,$adapter,$usersTable);
}

HomePageAction.php

class HomePageAction implements ServerMiddlewareInterface
{
/**
 * @var Router\RouterInterface
 */
private $router;

/**
 * @var null|Template\TemplateRendererInterface
 */
private $template;

/**
 * @var Adapter
 */
private $dbAdapter;

/**
 * @var UsersTable
 */
private $usersTable;

/**
 * HomePageAction constructor.
 * @param Router\RouterInterface $router
 * @param Template\TemplateRendererInterface|null $template
 * @param Adapter $adapter
 * @param UsersTable $usersTable
 */
public function __construct( Router\RouterInterface $router, Template\TemplateRendererInterface $template = null, Adapter $adapter, Table\UsersTable $usersTable )
{
    $this->router     = $router;
    $this->template   = $template;
    $this->dbAdapter  = $adapter;
    $this->usersTable = $usersTable;

}

在您拥有表的配置提供程序上，您必须将依赖项配置为factory EX：

'factories'  => [

            Table\UsersTable::class => function($container) {
                $dbAdapter          = $container->get( AdapterInterface::class );
                $resultSetPrototype = new ResultSet();
                $resultSetPrototype->setArrayObjectPrototype( new Model\Users() );
                $tableGateway       = new TableGateway('users', $dbAdapter, null, $resultSetPrototype);
                return new Table\UsersTable($tableGateway);
            },

        ],