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msd2/tracking/piwik/plugins/Goals/Columns/Metrics/RevenuePerVisit.php

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+<?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\Plugins\Goals\Columns\Metrics;
+
+use Piwik\Archive\DataTableFactory;
+use Piwik\DataTable;
+use Piwik\DataTable\Row;
+use Piwik\Metrics;
+use Piwik\Metrics\Formatter;
+use Piwik\Piwik;
+use Piwik\Plugin\ProcessedMetric;
+use Piwik\Tracker\GoalManager;
+
+/**
+ * The amount of revenue per visit (or per conversion if there are no visits). Calculated as:
+ *
+ *     sum(revenue for all goals) / (nb_visits or nb_conversions if no visits)
+ *
+ * Goal revenue and nb_visits & nb_conversions are calculated by the archiving process.
+ */
+class RevenuePerVisit extends ProcessedMetric
+{
+    private $idSite;
+
+    public function getName()
+    {
+        return 'revenue_per_visit';
+    }
+
+    public function getTranslatedName()
+    {
+        return Piwik::translate('General_ColumnValuePerVisit');
+    }
+
+    public function getDependentMetrics()
+    {
+        return array('revenue', 'nb_visits', 'nb_conversions','goals');
+    }
+
+    public function compute(Row $row)
+    {
+        $mappingFromNameToIdGoal = Metrics::getMappingFromNameToIdGoal();
+        $goals = $this->getMetric($row, 'goals') ?: array();
+
+        $revenue = 0;
+        foreach ($goals as $goalId => $goalMetrics) {
+            if ($goalId == Piwik::LABEL_ID_GOAL_IS_ECOMMERCE_CART) {
+                continue;
+            }
+            if ($goalId >= GoalManager::IDGOAL_ORDER
+                || $goalId == Piwik::LABEL_ID_GOAL_IS_ECOMMERCE_ORDER
+            ) {
+                $revenue += (int) $this->getMetric($goalMetrics, 'revenue', $mappingFromNameToIdGoal);
+            }
+        }
+
+        if ($revenue == 0) {
+            $revenue = (int) $this->getMetric($row, 'revenue');
+        }
+
+        $nbVisits    = (int) $this->getMetric($row, 'nb_visits');
+        $conversions = (int) $this->getMetric($row, 'nb_conversions');
+
+        // If no visit for this metric, but some conversions, we still want to display some kind of "revenue per visit"
+        // even though it will actually be in this edge case "Revenue per conversion"
+        return Piwik::getQuotientSafe($revenue, $nbVisits == 0 ? $conversions : $nbVisits, GoalManager::REVENUE_PRECISION);
+    }
+
+    public function format($value, Formatter $formatter)
+    {
+        return $formatter->getPrettyMoney($value, $this->idSite);
+    }
+
+    public function beforeFormat($report, DataTable $table)
+    {
+        $this->idSite = DataTableFactory::getSiteIdFromMetadata($table);
+        return !empty($this->idSite); // skip formatting if there is no site to get currency info from
+    }
+}