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在没有选择适配器的情况下使用Zend_Paginator

[英]Using Zend_Paginator without Select Adapter

我想使用Zend_Paginator但是Zend_Paginator需要Zend_Db_Select作为输入参数。

我的SQL查询有些复杂,使得使用Zend_Db_Select很难实现。

我可以在纯SQL查询中使用Zend_Paginator吗?

是的,您可以,从ZF文档:

Zend_Paginator的主要设计目标如下:

  • 分页任意数据,而不仅仅是关系数据库
  • 将Zend_Paginator轻松地耦合到其他Zend Framework组件,以便希望独立于Zend_View,Zend_Db等使用它的用户可以这样做。

该页面提供了Zend_Paginator可用的不同适配器类型的Zend_Paginator

例如,要使用数组(可以是数据库结果集)创建分页器,可以使用数组适配器:

$paginator = new Zend_Paginator(new Zend_Paginator_Adapter_Array($array));

我遇到了同样的问题,我的SQL查询有点复杂,并且使用Zend_Db_Select确实非常复杂,但是我通过实现Zend_Paginator_Adapter_Interface得到了一个解决方案,这很容易。

//$data, has a $rowSet() and a counter variable with the result of ('SELECT FOUND_ROWS() as count')
//rowSet come from  $rowSet = $this->_db->fetchAll($sql);//Default adapter

$adapter   = new Fidelizacion_Model_AdapterVisitasClientes($data);
$this->_clientePager =  new Zend_Paginator($adapter);


//My own adapter

/**
 * @author Jose
 */
class Fidelizacion_Model_PaginatorVisitasClientes implements Zend_Paginator_Adapter_Interface
{
    /**
     * Array
     *
     * @var array
     */
    protected $_array = null;

    /**
     * Item count
     *
     * @var integer
     */
    protected $_count = null;

    /**
     * Constructor.
     *
     * @param array $array Array to paginate
     */
    public function __construct($array)
    {
        $this->_array = $array['rowSet'];
        $this->_count = $array['count'];
    }

    public function getItems($offset, $itemCountPerPage)
    {
        $clientes = array();
            if($this->_array){
                foreach ($this->_array as $row) { 
                    $clpo = new Clientes_Model_ClienteMin();
                    $clpo->setId($row['id']);
                    $clpo->setNombre($row['nombre']);
                    $clpo->setNumeroDocumento($row['numero_documento']);
                    $clpo->setTelefonoContacto($row['telefono_contacto']);
                    $clpo->setLocalidad($row['localidad']);
                    $clpo->setPersonaContacto($row['nombre_corto']);
                    $clientes[] = $clpo;
                    $clpo = null;
                }
           }   
        return $clientes;
    }
    /**
     * Returns the total number of rows in the array.
     *
     * @return integer
     */
    public function count()
    {
        return $this->_count;
    }
}

//As you can see with that you can encapsulate in objects and set the conunt() method with the value of FOUND_ROWS()

因此,现在您必须确保捕获了'page'参数并计算了当前页的LIMIT以添加到SQL查询中,例如:

$sql .= ' LIMIT '.(((ITEMS_PER_PAGE * (int)$this->_getParam('page',1)) - ITEMS_PER_PAGE)).','.(ITEMS_PER_PAGE);
$set = $this->_getClientesDao()->getClientesFiltroVisitas($sql);
$paginator = $this->_getClientesPager($set);//returns the pager instantie with my own adapter
$paginator->setCurrentPageNumber($this->_getParam('page'));    
$paginator->setItemCountPerPage(ITEMS_PER_PAGE);
$paginator->setPageRange(5);

就我而言,我有大约三十个变量来编写SQL。 我通过GET传递了这些信息,然后我的导航控件如下所示:

<?php if ($this->pageCount): ?>
    <div class="pagination_control">
        <a class="ends rounded" href="<?php echo $this->url() . '?' . $_SERVER['QUERY_STRING'] . '&page=' . $this->first ;?>">
           Primero
        </a>
        <?php if (isset($this->previous)): ?>
        <a class="movement rounded" href="<?php echo $this->url() . '?' . $_SERVER['QUERY_STRING'] . '&page=' . $this->previous; ?>">
              &lt;Anterior
          </a> 
        <?php else: ?>
          <span class="disabled rounded">&lt; Previous</span>
        <?php endif; ?>
        <?php foreach ($this->pagesInRange as $page): ?>
            <?php if ($page != $this->current): ?>
                <a class="page square rounded" href="<?php echo $this->url() . '?' . $_SERVER['QUERY_STRING'] . '&page=' .$page; ?>">
                      <?php echo $page; ?>
                </a> 
            <?php else: ?>
                 <?php echo "<span class='current square rounded'>$page</span>" ?>
            <?php endif; ?>
        <?php endforeach; ?>
        <?php if (isset($this->next)): ?>
        <a class="movement rounded" href="<?php echo $this->url() . '?' . $_SERVER['QUERY_STRING'] . '&page=' . $this->next;?>">
            Siguiente&gt;
          </a>
        <?php else: ?>
          <span class="disabled rounded">Next &gt;</span>
        <?php endif; ?>
        <a class="ends rounded" href="<?php echo $this->url() . '?' . $_SERVER['QUERY_STRING'] . '&page=' .$this->last; ?>">
            Ùltimo
        </a>
        <span class="pagecount">
            Página <?php echo $this->current; ?> de <?php echo $this->pageCount; ?>
        </span>
    </div>
<?php endif; ?>

仅此而已,一切正常!
我希望这对某人有用
问候。

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