Zend 2：如何在我的當前模型中使用另一個模型中定義的方法？

Question

我嘗試以不同的方式解決這個問題，但似乎沒有任何工作。 我有2種型號：

namespace Admin\Model; 

use Zend\Db\TableGateway\TableGateway; 

class UsersMetaTable 
{ 
    protected $tableGateway; 

    public function __construct(TableGateway $tableGateway) 
    { 
     $this->tableGateway = $tableGateway; 
    } 

    public function saveData(UsersMeta $value) 
    { 
     ... 
    } 

    public function getAttachment($user_id){ 
     $user_id = (int) $user_id; 
     $rowset = $this->tableGateway->select(array('parent_id' => $user_id,'meta_key' =>'inside_users_attachement')); 
     $row = $rowset->current(); 
     if (!$row) { 
      return false; 
      exit; 
     } 
     return $row->meta_value; 
    } 
} 

而且我目前的型號：

namespace Admin\Model; 

use Zend\Db\TableGateway\TableGateway; 

class AttachmentTable 
{ 
    protected $tableGateway; 

    public function __construct(TableGateway $tableGateway) 
    { 
     $this->tableGateway = $tableGateway; 
    } 

    public function saveData(Attachment $value) 
    { 
     ... 
    } 

    public function getAttachment($user_id) 
    { 
     $user_id = (int) $user_id; 

     //HERE I NEED TO LOAD UsersMetaTable MODEL AND USE getAttachment METHOD 

     $attachment_id = $usersMetaTable->getAttachment($user_id); 

     if($attachment_id){ 
      $rowset = $this->tableGateway->select(array('ID' => $attachment_id)); 
      $row = $rowset->current(); 
      if (!$row) { 
       return false; 
       exit; 
      } 
      return $row; 
     }else{ 
      return false; 
     } 
    } 
} 

在AttachmentTable模式，我需要從UsersMetaTable模型中使用的方法getAttachment。我如何在Zend Franework 2中做到這一點？

我的兩個模型在Modele.php定義：

public function getServiceConfig(){ 
    return array(
     'abstract_factories' => array(), 
     'aliases' => array(), 
     'factories' => array(
      'Admin\Model\AttachmentTable' => function($sm) { 
          $tableGateway = $sm->get('AttachmentTableGateway'); 
       $table = new AttachmentTable($tableGateway); 
       return $table; 
      }, 
      'AttachmentTableGateway' => function ($sm) { 
       $dbAdapter = $sm->get('Zend\Db\Adapter\Adapter'); 
       $resultSetPrototype = new ResultSet(); 
       $resultSetPrototype->setArrayObjectPrototype(new attachment()); // Notice what is set here 
       return new TableGateway('attachments', $dbAdapter, null, $resultSetPrototype); 
      }, 
      'Admin\Model\UsersMetaTable' => function($sm) { 
       $tableGateway = $sm->get('UsersMetaTableGateway'); 
       $table = new UsersMetaTable($tableGateway); 
       return $table; 
      }, 
      'UsersMetaTableGateway' => function ($sm) { 
       $dbAdapter = $sm->get('Zend\Db\Adapter\Adapter'); 
       $resultSetPrototype = new ResultSet(); 
       $resultSetPrototype->setArrayObjectPrototype(new UsersMeta()); // Notice what is set here 
       return new TableGateway('inside_users_metas', $dbAdapter, null, $resultSetPrototype); 
      }, 
     ), 
     'invokables' => array(
     // defining it as invokable here, any factory will do too 
      'my_image_service' => 'Imagine\Gd\Imagine', 
     ), 
     'services' => array(), 
     'shared' => array(), 
    ); 
} 

Answer 1

你可以注入你的UsersMetaTable到您的AttachmentTable在工廠這樣的：

'Admin\Model\AttachmentTable' => function($sm) { 
    $tableGateway = $sm->get('AttachmentTableGateway'); 
    $usersMetaTable = $sm->get('Admin\Model\UsersMetaTable'); 
    $table = new AttachmentTable($tableGateway, $usersMetaTable); 
    return $table; 
}, 

然後你需要更新你的構造，因此將注入的服務置於適當的位置：

namespace Admin\Model; 

use Zend\Db\TableGateway\TableGateway; 

class AttachmentTable 
{ 
    protected $tableGateway; 

    protected $usersMetaTable; 

    public function __construct(TableGateway $tableGateway, UsersMetaTable $usersMetaTable) 
    { 
     $this->tableGateway = $tableGateway; 
     $this->usersMetaTable = $usersMetaTable; 
    } 

    // ...remaining class code 
}