MDL-65175 mlbackend_php: Add missing checking for number of targets

2019-04-11 17:57:25 +02:00
parent d5111e6f6b
commit 69b68ad691
1 changed files with 4 additions and 0 deletions
@@ -291,11 +291,15 @@ class processor implements \core_analytics\classifier, \core_analytics\regressor

        // We need at least 2 samples belonging to each target.
        $counts = array_count_values($targets);
+        $ntargets = count(explode(',', $metadata['targetclasses']));
        foreach ($counts as $count) {
            if ($count < 2) {
                $notenoughdata = true;
            }
        }
+        if ($ntargets > count($counts)) {
+            $notenoughdata = true;
+        }
        if (!empty($notenoughdata)) {
            $resultobj = new \stdClass();
            $resultobj->status = \core_analytics\model::NOT_ENOUGH_DATA;