Question

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

我的SQL查询有点复杂，使得Zend_Db_Select实现它变得如此困难。

我可以将Zend_Paginator用于纯SQL查询吗？

Answer 1

是的，你可以，来自ZF文档：

的主要设计目标   Zend_Paginator如下：


分页任意数据，而不仅仅是关系数据库

将Zend_Paginator轻松地耦合到其他人身上   Zend Framework组件这样   希望独立使用的用户   Zend_View，Zend_Db等可以这样做

This page提供了Zend_Paginator可用的不同适配器类型的示例。

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));

Answer 2

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它非常复杂，但我通过实现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'page'参数并计算要在SQL查询中添加的当前页面的LIMIT，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);

就像我的情况一样，我有大约30个变量来制作SQL。我通过GET传递这些，然后我的导航控件看起来像这样：

<?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; ?>

就是这样，它运作正常！我希望这对某些人有用问候。

使用Zend_Paginator而不选择适配器

2 个答案: