### 模型
**模型实体类**
处理数据数组，返回对象类型
> module/Album/src/Model/Album.php
```php
namespace Album\Model;
class Album
{
public $id;
public $artist;
public $title;
public function exchangeArray(array $data)
{
$this->id = !empty($data['id']) ? $data['id'] : null;
$this->artist = !empty($data['artist']) ? $data['artist'] : null;
$this->title = !empty($data['title']) ? $data['title'] : null;
}
}
```
**数据表类**
数据库增查删改操作
> module/Album/src/Model/AlbumTable.php
```php
namespace Album\Model;
use RuntimeException;
use Zend\Db\TableGateway\TableGatewayInterface;
class AlbumTable
{
private $tableGateway;
public function __construct(TableGatewayInterface $tableGateway)
{
$this->tableGateway = $tableGateway;
}
public function fetchAll()
{
return $this->tableGateway->select();
}
public function getAlbum($id)
{
$id = (int) $id;
$rowset = $this->tableGateway->select(['id' => $id]);
$row = $rowset->current();
if (! $row) {
throw new RuntimeException(sprintf(
'Could not find row with identifier %d',
$id
));
}
return $row;
}
public function saveAlbum(Album $album)
{
$data = [
'artist' => $album->artist,
'title' => $album->title,
];
$id = (int) $album->id;
if ($id === 0) {
$this->tableGateway->insert($data);
return;
}
if (! $this->getAlbum($id)) {
throw new RuntimeException(sprintf(
'Cannot update album with identifier %d; does not exist',
$id
));
}
$this->tableGateway->update($data, ['id' => $id]);
}
public function deleteAlbum($id)
{
$this->tableGateway->delete(['id' => (int) $id]);
}
}
```
**模块管理器**
添加服务和控制器配置
> module/Album/src/Module.php
```php
namespace Album;
// Add these import statements:
use Zend\Db\Adapter\AdapterInterface;
use Zend\Db\ResultSet\ResultSet;
use Zend\Db\TableGateway\TableGateway;
use Zend\ModuleManager\Feature\ConfigProviderInterface;
class Module implements ConfigProviderInterface
{
// getConfig() method is here
// Add this method:
public function getServiceConfig()
{
return [
'factories' => [
Model\AlbumTable::class => function($container) {
$tableGateway = $container->get(Model\AlbumTableGateway::class);
return new Model\AlbumTable($tableGateway);
},
Model\AlbumTableGateway::class => function ($container) {
$dbAdapter = $container->get(AdapterInterface::class);
$resultSetPrototype = new ResultSet();
$resultSetPrototype->setArrayObjectPrototype(new Model\Album());
return new TableGateway('album', $dbAdapter, null, $resultSetPrototype);
},
],
];
}
// Add this method:
public function getControllerConfig()
{
return [
'factories' => [
Controller\AlbumController::class => function($container) {
return new Controller\AlbumController(
$container->get(Model\AlbumTable::class)
);
},
],
];
}
}
```
**修改控制器**
导入数据表对象
> module/Album/src/Controller/AlbumController.php
```php
namespace Album\Controller;
// Add the following import:
use Album\Model\AlbumTable;
use Zend\Mvc\Controller\AbstractActionController;
use Zend\View\Model\ViewModel;
class AlbumController extends AbstractActionController
{
// Add this property:
private $table;
// Add this constructor:
public function __construct(AlbumTable $table)
{
$this->table = $table;
}
public function indexAction()
{
return new ViewModel([
'albums' => $this->table->fetchAll(),
]);
}
}
```
**模块配置**
移除控制器配置
> module/Album/config/module.config.php
```php
namespace Album;
// Remove this:
use Zend\ServiceManager\Factory\InvokableFactory;
return [
// And remove the entire "controllers" section here:
'controllers' => [
'factories' => [
Controller\AlbumController::class => InvokableFactory::class,
],
],
/* ... */
];
```
