zend expressive - zend db

Question

我正在尝试使用zend表现力，看着如何做数据库的东西。我在看this，但目前还不清楚。我使用composer来安装zend-db，它提到在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，但之后没有讨论如何在实际操作类中访问它由于适配器对象超出了其他类的范围，我不知道发生了什么。

任何人都有从开始到结束的良好和明确的例子，实际上能够连接和查询SQL？

Answer 1

尝试通过厂注入你的DB类，遵循例如在骨架的应用程序，你可以做这样的事情：

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; 

} 

上，你有你的配置提供商你的桌子必须配置依赖作为工厂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); 
      }, 

     ],