Piwik\Plugins\Goals\API::getMetrics PHP Méthode

    public function getMetrics($idSite, $period, $date, $segment = false, $idGoal = false, $columns = array())
    {
        Piwik::checkUserHasViewAccess($idSite);
        $archive = Archive::build($idSite, $period, $date, $segment);
        // Mapping string idGoal to internal ID
        $idGoal = self::convertSpecialGoalIds($idGoal);
        $isEcommerceGoal = $idGoal === GoalManager::IDGOAL_ORDER || $idGoal === GoalManager::IDGOAL_CART;
        $allMetrics = Goals::getGoalColumns($idGoal);
        $columnsToShow = Piwik::getArrayFromApiParameter($columns);
        $requestedColumns = $columnsToShow;
        $shouldAddAverageOrderRevenue = (in_array('avg_order_revenue', $requestedColumns) || empty($requestedColumns)) && $isEcommerceGoal;
        if ($shouldAddAverageOrderRevenue && !empty($requestedColumns)) {
            $avgOrder = new AverageOrderRevenue();
            $metricsToAdd = $avgOrder->getDependentMetrics();
            $requestedColumns = array_unique(array_merge($requestedColumns, $metricsToAdd));
        }
        $report = ReportsProvider::factory('Goals', 'getMetrics');
        $columnsToGet = $report->getMetricsRequiredForReport($allMetrics, $requestedColumns);
        $inDbMetricNames = array_map(function ($name) use($idGoal) {
            return $name == 'nb_visits' ? $name : Archiver::getRecordName($name, $idGoal);
        }, $columnsToGet);
        $dataTable = $archive->getDataTableFromNumeric($inDbMetricNames);
        if (count($columnsToGet) > 0) {
            $newNameMapping = array_combine($inDbMetricNames, $columnsToGet);
        } else {
            $newNameMapping = array();
        }
        $dataTable->filter('ReplaceColumnNames', array($newNameMapping));
        // TODO: this should be in Goals/Get.php but it depends on idGoal parameter which isn't always in _GET (ie,
        //       it's not in ProcessedReport.php). more refactoring must be done to report class before this can be
        //       corrected.
        if ($shouldAddAverageOrderRevenue) {
            $dataTable->filter(function (DataTable $table) {
                $extraProcessedMetrics = $table->getMetadata(DataTable::EXTRA_PROCESSED_METRICS_METADATA_NAME);
                if (empty($extraProcessedMetrics)) {
                    $extraProcessedMetrics = array();
                }
                $extraProcessedMetrics[] = new AverageOrderRevenue();
                $table->setMetadata(DataTable::EXTRA_PROCESSED_METRICS_METADATA_NAME, $extraProcessedMetrics);
            });
        }
        // remove temporary metrics that were not explicitly requested
        if (empty($columnsToShow)) {
            $columnsToShow = $allMetrics;
            $columnsToShow[] = 'conversion_rate';
            if ($isEcommerceGoal) {
                $columnsToShow[] = 'avg_order_revenue';
            }
        }
        $dataTable->queueFilter('ColumnDelete', array($columnsToRemove = array(), $columnsToShow));
        return $dataTable;
    }