ZF2 - 加入TableGateway模型表里

Question

如何在TableGateway的模型表中加入？

我有这个在我的模型/ NoticiasTable.php：

protected $tableGateway; 

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

    public function fetchAll() { 
    $where = new Where(); 
    $where->isNull('deleted_at'); 

    $resultSet = $this->tableGateway->select(function (Select $select) use ($where) { 
     $select->join('news_photos', 'news_photos.news_id = news.id'); 
     $select->where($where); 
     $select->order('date DESC'); 
    }); 
    return $resultSet; 
    } 

它不显示任何错误，但结果是空的... 如果我删除了“加入”它的工作原理。 那么，如何在模型表中使用JOIN？

Answer 1

这就是我如何连接表。

use Zend\Paginator\Adapter\DbSelect; 
use Zend\Paginator\Paginator; 
use Zend\Db\TableGateway\TableGateway; 
use Zend\Db\Sql\Predicate\Expression; 


/** 
* Preducate contstants. 
*/ 
const PRE_AND = "AND"; 
const PRE_OR = "OR"; 
const PRE_NULL = null; 

/** 
* @param bool $pagination 
* @param string $join 
* @param array $tbl1OneCols - content table 
* @param array $tbl2OneCols - the joined table 
* @param string $on 
* @param string $joinType 
* @param null|array|string $where 
* @param null $group 
* @param null $order 
* @param int $limit 
* @param int $offset 
* 
* @return ResultSet|Paginator|null 
*/ 
public function fetchJoin($pagination = false, $join = '', array $tbl1OneCols = [], array $tbl2OneCols = [], $on = '', $joinType = self::JOIN_INNER, $where = null, $group = null, $order = null, $limit = 0, $offset = 0) 
{ 
    $select = $this->tableGateway->getSql()->select(); 
    $select->join($join, $on, $tbl2OneCols, $joinType); 
    $result = $this->prepareQuery($select, $tbl1OneCols, $where, self::PRE_NULL, $group, $order, (int) $limit, (int) $offset); 
    if ((bool) $pagination === true) { 
     return new Paginator(new DbSelect($result, $this->tableGateway->getAdapter(), $this->tableGateway->getResultSetPrototype())); 
    } else { 
     $resultSet = $this->tableGateway->selectWith($result); 
     $resultSet->buffer(); 
     if ($resultSet->isBuffered() && $resultSet->valid() && $resultSet->count() > 0) { 
      return $resultSet; 
     } 
     return null; 
    } 
} 

/** 
* Prepare all statements before querying the database. 
* 
* @param Zend\Db\Sql\Select $select 
* @param array $columns 
* @param null|array|string $where 
* @param null $group 
* @param null $predicate 
* @param null $order 
* @param null $limit 
* @param null $offset 
* 
* @return Zend\Db\Sql\Select 
*/ 
private function prepareQuery(\Zend\Db\Sql\Select $select, array $columns = [], $where = null, $predicate = self::PRE_NULL, $group = null, $order = null, $limit = null, $offset = null) 
{ 
    if (!empty($columns)) { 
     $select->columns($columns); 
    } 
    if (is_array($where) && !empty($where)) { 
     if (!in_array($predicate, [self::PRE_AND, self::PRE_OR, self::PRE_NULL])) { 
      $predicate = self::PRE_NULL; 
     } 
     $select->where($where, $predicate); 
    } elseif (!empty($where) && is_string($where)) { 
     $select->where(new Expression($where)); 
    } 
    if (!empty($group)) { 
     $select->group($group); 
    } 
    if (!empty($order)) { 
     $select->order($order); 
    } 
    if (!empty($limit) && $limit > 0) { 
     $select->limit($limit); 
    } 
    if (!empty($offset) && $offset > 0) { 
     $select->offset($offset); 
    } 
    return $select; 
} 

对于$this->tableGateway我有一个分离的类。

namespace Admin\Factory\Model; 

use Zend\ServiceManager\FactoryInterface; 
use Zend\ServiceManager\ServiceLocatorInterface; 
use Zend\Db\ResultSet\ResultSet; 
use Zend\Db\TableGateway\TableGateway; 
use Admin\Model\Menu; 
use Admin\Model\MenuTable; 

class MenuTableFactory implements FactoryInterface 
{ 
    public function createService(ServiceLocatorInterface $sm = null) 
    { 
     $resultSetPrototype = new ResultSet(); 
     $resultSetPrototype->setArrayObjectPrototype(new Menu()); 
     $db = $sm->get('Zend\Db\Adapter\Adapter'); 

     $tableGateway = new TableGateway('menu', $db, null, $resultSetPrototype); 
     $table = new MenuTable($tableGateway); 

     return $table; 
    } 
} 

现在控制器内，让我们说，你想显示所有的X记录indexAction()。

用分页。 $this->getView()只是返回ViewModel。如果你不想简单分页，并将第一个参数设为false。

/** 
* This action shows the list of all Administrators 
*/ 
public function indexAction() 
{ 
    $this->getView()->setTemplate("admin/administrator/index"); 
    $paginator = $this->getTable("administrator")->fetchJoin(true, "user", ["user"], ["name"], "administrator.user=user.id", "left"); 
    $paginator->setCurrentPageNumber((int)$this->getParam("page", 1)); 
    $paginator->setItemCountPerPage(20); 
    $this->getView()->paginator = $paginator; 
    return $this->getView(); 
} 

$this->getTable()是控制器插件带有工厂其中控制器保持eveything简单的外线电话ServiceManager。