使用Zend Db Sql进行分页 - Pagination using Zend Db Sql

我将按照zend文档的教程从头开始创建博客模块，完成后一切正常。在上一个创建相册模块的教程中，他们使用了TableGateway，还展示了如何使用它创建分页，但在这个博客模块中，他们没有，他们使用的是Zend'Db'Sql。

我试着在互联网上找到一些关于这件事的信息，但一无所获。。。

public function findAllPosts()
{
    $sql       = new Sql($this->db);
    $select    = $sql->select('posts');
    $statement = $sql->prepareStatementForSqlObject($select);
    $result    = $statement->execute();
    if (! $result instanceof ResultInterface || ! $result->isQueryResult()) {
        return [];
    }
    $resultSet = new HydratingResultSet($this->hydrator, $this->postPrototype);
    $resultSet->initialize($result);
    return $resultSet;
}

在上一个教程中，我们创建了两个方法，一个称为fetchAll($paginated = false)，另一个名为fetchPaginatedResults，如果$paginated为真，则称为方法fetchPaginatedResults，例如：

public function fetchAll($paginated = false)
{
    if ($paginated) {
        return $this->fetchPaginatedResults();
    }
    return $this->tableGateway->select();
}
private function fetchPaginatedResults()
{
    // Create a new Select object for the table:
    $select = new Select($this->tableGateway->getTable());
    // Create a new result set based on the Album entity:
    $resultSetPrototype = new ResultSet();
    $resultSetPrototype->setArrayObjectPrototype(new Album());
    // Create a new pagination adapter object:
    $paginatorAdapter = new DbSelect(
        // our configured select object:
        $select,
        // the adapter to run it against:
        $this->tableGateway->getAdapter(),
        // the result set to hydrate:
        $resultSetPrototype
    );
    $paginator = new Paginator($paginatorAdapter);
    return $paginator;
}

我想知道，如何使用Zend'Db'Sql和HydratingResultSet进行同样的操作？

您必须选择$db_adapter，您将通过以下方式获得分页符：

use Zend'Paginator'Paginator;
use Zend'Paginator'Adapter'DbSelect;
$sql = new Sql($this->db);
$select = $sql->select('posts');
new Paginator(new DbSelect($select, $db_adpter));

您可以在分页器中设置HydratingResultSet。

示例：

    $sql = new Sql ( $this->db );
    $select = $sql->select ( $this->table );
    //$statement = $sql->prepareStatementForSqlObject ( $select );
    //$result = $statement->execute ();     
    //if (! $result instanceof ResultInterface || ! $result->isQueryResult ()) {return [ ];}
    $resultSet = new HydratingResultSet ( $this->hydrator, $this->Prototype );
    //$resultSet->initialize ( $result );
    // return $resultSet;
    // Executando
    $adapter = new 'Zend'Paginator'Adapter'DbSelect ( $select, $this->db, $resultSet );
    $paginator = new 'Zend'Paginator'Paginator ( $adapter );
    $paginator->setItemCountPerPage ( $count );
    $paginator->setCurrentPageNumber ( $offset );
    return $paginator;

但如果你将使用传呼机，我不确定水合物是否是最好的选择。

记住，您需要安装包(如果是zf3(

$ composer require zendframework/zend-paginator
Using version ^2.7 for zendframework/zend-paginator
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
  - Installing zendframework/zend-paginator (2.7.0)
    Loading from cache

  Please select which config file you wish to inject 'Zend'Paginator' into:
  [0] Do not inject
  [1] config/modules.config.php
  [2] config/development.config.php.dist
  Make your selection (default is 0):1
  Remember this option for other packages of the same type? (y/N)
Installing Zend'Paginator from package zendframework/zend-paginator
zendframework/zend-paginator suggests installing zendframework/zend-cache (Zend'Cache component to support cache features)
Writing lock file
Generating autoload files