Merge pull request #104 from NETWAYS/sort-labels-nat

Sort charts with strnatcmp

Author: martialblog

library/Perfdatagraphs/Common/PerfdataChart.php

@@ -110,7 +110,14 @@ public function createChart(PerfdataRequest $request, PerfdataResponse $response
         }
 
         $datasets = [];
-        foreach ($response->getDatasets() as $dataset) {
+
+        // Ensure labels have a predictable order
+        $sets = $response->getDatasets();
+        uasort($sets, function ($a, $b) {
+            return strnatcmp($a->getTitle(), $b->getTitle());
+        });
+
+        foreach ($sets as $dataset) {
             // If the filter param is set, we only use the dataset when the label matches
             if (count($filter) > 0) {
                 if (!in_array($dataset->getTitle(), $filter)) {