在 Zend Framework 中为具有多个表关系的对象建模

问题描述

我正在尝试使用 Zend Framework，并尝试针对我正在制作的网站使用快速入门"指南，只是为了了解该过程将如何运作.如果这个答案很明显，请原谅我，希望有经验的人可以对此有所了解.

I'm toying with Zend Framework and trying to use the "QuickStart" guide against a website I'm making just to see how the process would work. Forgive me if this answer is obvious, hopefully someone experienced can shed some light on this.

我有三个数据库表:

CREATE TABLE `users` (
  `id` int(11) NOT NULL auto_increment,
  `email` varchar(255) NOT NULL,
  `username` varchar(255) NOT NULL default '',
  `first` varchar(128) NOT NULL default '',
  `last` varchar(128) NOT NULL default '',
  `gender` enum('M','F') default NULL,
  `birthyear` year(4) default NULL,
  `postal` varchar(16) default NULL,
  `auth_method` enum('Default','OpenID','Facebook','Disabled') NOT NULL default 'Default',
  PRIMARY KEY  (`id`),
  UNIQUE KEY `email` (`email`),
  UNIQUE KEY `username` (`username`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1

CREATE TABLE `user_password` (
  `user_id` int(11) NOT NULL,
  `password` varchar(16) NOT NULL default '',
  PRIMARY KEY  (`user_id`),
  UNIQUE KEY `user_id` (`user_id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1

CREATE TABLE `user_metadata` (
  `user_id` int(11) NOT NULL default '0',
  `signup_date` datetime default NULL,
  `signup_ip` varchar(15) default NULL,
  `last_login_date` datetime default NULL,
  `last_login_ip` varchar(15) default NULL,
  PRIMARY KEY  (`user_id`),
  UNIQUE KEY `user_id` (`user_id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1

我想创建一个在某些情况下使用所有三个表的用户模型.例如，如果/当需要元数据时访问元数据表.仅当设置了默认"auth_method 时才访问 user_password 表.稍后我可能会添加一个配置文件表，我希望能够从用户模型访问该表.

I want to create a User model that uses all three tables in certain situations. E.g., the metadata table is accessed if/when the meta data is needed. The user_password table is accessed only if the 'Default' auth_method is set. I'll likely be adding a profile table later on that I would like to be able to access from the user model.

使用采埃孚做到这一点的最佳方法是什么?为什么?

What is the best way to do this with ZF and why?

推荐答案

class Users extends Zend_Db_Table_Abstract
{
    protected $_name = 'users';
    protected $_rowClass = 'User';
    protected $_dependentTables = array ('UserMetadata', 'UserPassword');

...

class UserMetadata extends Zend_Db_Table_Abstract
{
    protected $_name = 'user_metadata';
    protected $_referenceMap = array (
    'Users'=> array (
    'columns'=>'user_id',
    'refTableClass'=>'Users',
    'refColumns'=>'id'
    )
    );

...

class UserPassword extends Zend_Db_Table_Abstract
{
    protected $_name = 'user_password';
    protected $_referenceMap = array (
    'Users'=> array (
    'columns'=>'user_id',
    'refTableClass'=>'Users',
    'refColumns'=>'id'
    )
    );

获取数据:

$id = //get your user id from somewhere

$users = new Users();
$user = $users->fetchRow('id=?', $id);
if ($user->authMethod == 0)
{
    $metadata = $user->findDependentRowset('UserMetadata')->current();
}

或

$user = $users->fetchRow($users->select()
              ->where('gender=?, 'M')
              ->order('email ASC');

...等

插入数据:

$newRow = $users->fetchNew();
$newRow->email = me@domain.com;
$newRow->save();

或

$users = new Users();
$data = array('email'     => 'me@domain.com',
              'firstname' => 'Me');
$users->insert($data);

更新:

$user->email = 'me@domain.org';
$user->save();

删除一行:

$user->delete();

使用交易:

$db->beginTransaction();
$db->commit();
$db->rollback();

等等...都在 ZF 手册中！

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