www.gusucode.com > Piwik 网站流量统计系统 v2.9.1PHP源码程序 > Piwik 网站流量统计系统 v2.9.1/How to install Piwik.html/piwik/core/DataTable/Filter/MetadataCallbackAddMetadata.php
<?php /** * Piwik - free/libre analytics platform * * @link http://piwik.org * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later * */ namespace Piwik\DataTable\Filter; use Piwik\DataTable; use Piwik\DataTable\BaseFilter; /** * Executes a callback for each row of a {@link DataTable} and adds the result to the * row as a metadata value. Only metadata values are passed to the callback. * * **Basic usage example** * * // add a logo metadata based on the url metadata * $dataTable->filter('MetadataCallbackAddMetadata', array('url', 'logo', 'Piwik\Plugins\MyPlugin\getLogoFromUrl')); * * @api */ class MetadataCallbackAddMetadata extends BaseFilter { private $metadataToRead; private $functionToApply; private $metadataToAdd; private $applyToSummaryRow; /** * Constructor. * * @param DataTable $table The DataTable that will eventually be filtered. * @param string|array $metadataToRead The metadata to read from each row and pass to the callback. * @param string $metadataToAdd The name of the metadata to add. * @param callable $functionToApply The callback to execute for each row. The result will be * added as metadata with the name `$metadataToAdd`. * @param bool $applyToSummaryRow True if the callback should be applied to the summary row, false * if otherwise. */ public function __construct($table, $metadataToRead, $metadataToAdd, $functionToApply, $applyToSummaryRow = true) { parent::__construct($table); $this->functionToApply = $functionToApply; if (!is_array($metadataToRead)) { $metadataToRead = array($metadataToRead); } $this->metadataToRead = $metadataToRead; $this->metadataToAdd = $metadataToAdd; $this->applyToSummaryRow = $applyToSummaryRow; } /** * See {@link MetadataCallbackAddMetadata}. * * @param DataTable $table */ public function filter($table) { foreach ($table->getRows() as $key => $row) { if (!$this->applyToSummaryRow && $key == DataTable::ID_SUMMARY_ROW) { continue; } $params = array(); foreach ($this->metadataToRead as $name) { $params[] = $row->getMetadata($name); } $newValue = call_user_func_array($this->functionToApply, $params); if ($newValue !== false) { $row->addMetadata($this->metadataToAdd, $newValue); } } } }