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模型是ZF2对数据库操作的核心内容,也是进行数据过滤、数据交换的功能专区。 ### 7.5.1 添加 Album.php 此文件包括数据交换、表单数据过滤功能;添加 `/module/Album/src/Album/Model/Album.php` 内容如下: ~~~ namespace Album\Model; use Zend\InputFilter\Factory as InputFactory; use Zend\InputFilter\InputFilter; use Zend\InputFilter\InputFilterAwareInterface; use Zend\InputFilter\InputFilterInterface; class Album implements InputFilterAwareInterface { public $id; public $artist; public $title; protected $inputFilter; public function exchangeArray($data){ $this->id = (isset($data['id'])) ? $data['id'] : null; $this->artist = (isset($data['artist'])) ? $data['artist'] : null; $this->title = (isset($data['title'])) ? $data['title'] : null; } public function getArrayCopy(){ return get_object_vars($this); } public function getInputFilter() { if(!$this->inputFilter){ $this->inputFilter = new InputFilter(); $factory = new InputFactory(); $this->inputFilter->add($factory->createInput(array( 'name'=>'id', 'required'=>true, 'filters'=>array( array('name'=>'Int'), ), ))); $this->inputFilter->add($factory->createInput(array( 'name'=>'artist', 'required'=>true, 'filters'=>array( array('name'=>'StripTags'), array('name'=>'StringTrim'), ), 'validators'=>array( array( 'name'=>'StringLength', 'options'=>array( 'encoding'=>'UTF-8', 'min'=>5, 'max'=>100, ), ), ), ))); $this->inputFilter->add($factory->createInput(array( 'name'=>'title', 'required'=>true, 'filters'=>array( array('name'=>'StripTags'), array('name'=>'StringTrim'), ), 'validators'=>array( array( 'name'=>'StringLength', 'options'=>array( 'encoding'=>'UTF-8', 'min'=>5, 'max'=>100, ), ), ), ))); } return $this->inputFilter; } public function setInputFilter(InputFilterInterface $inputFilter) { throw new \Exception('Not used'); } } ~~~ 代码解释: public function exchangeArray($data){} 数据转换 public function getArrayCopy(){} 克隆对象内属性 public function getInputFilter() {} 过滤器 ### 7.5.2 添加AlbumTable.php 此文件为数据库操作网关,实现对数据库的一系列操作;添加文件:`/module/Album/src/Album/Model/AlbumTable.php`,具体内容如下: ~~~ namespace Album\Model; use Zend\Db\TableGateway\TableGateway; use Zend\Db\ResultSet\ResultSet; use Zend\Db\Sql\Select; use Zend\Paginator\Adapter\DbSelect; use Zend\Paginator\Paginator; class AlbumTable { protected $tableGateway; public function __construct(TableGateway $tg) { $this->tableGateway = $tg; } public function fetchAll($paginated=false) { if($paginated){// 分页 $select = new Select('album'); $rs = new ResultSet(); $rs->setArrayObjectPrototype(new Album()); $pageAdapter = new DbSelect($select,$this->tableGateway->getAdapter(),$rs); $paginator = new Paginator($pageAdapter); return $paginator; } $resultSet = $this->tableGateway->select(); return $resultSet; } public function getAlbum($id) { $id = (int) $id; $rowset = $this->tableGateway->select(array('id'=>$id)); $row = $rowset->current(); if(!$row){ throw new \Exception("Could not find row {$id}"); } return $row; } public function saveAlbum(Album $album) { $data = array( 'artist' =>$album->artist, 'title' =>$album->title ); $id = (int) $album->id; if($id == 0){ $this->tableGateway->insert($data); }else{ if($this->getAlbum($id)){ $this->tableGateway->update($data,array('id'=>$id)); }else{ throw new \Exception("Could not find row {$id}"); } } } public function deleteAlbum($id) { $this->tableGateway->delete(array('id'=>$id)); } } ~~~ 代码解释: public function fetchAll($paginated=false){} 获取数据表中的所有记录 public function getAlbum($id){} 获取指定ID的记录行 public function saveAlbum(Album $album){} 保存数据到数据库 public function deleteAlbum($id){} 删除指定ID的记录行