Alternate method to reload VisitsSummary_WidgetOverviewGraph graph

2 files changed, 12 insertions, 2 deletions

diff --git a/plugins/VisitsSummary/Controller.php b/plugins/VisitsSummary/Controller.php
index eadc9db07c..71a20ff442 100644
--- a/plugins/VisitsSummary/Controller.php
+++ b/plugins/VisitsSummary/Controller.php
@@ -39,11 +39,19 @@ class Controller extends \Piwik\Plugin\Controller
     {
         $view = new View('@VisitsSummary/index');
         $this->setPeriodVariablesView($view);
-        $view->graphEvolutionVisitsSummary = $this->getEvolutionGraph(array(), array('nb_visits'), __FUNCTION__);
+        $view->graphEvolutionVisitsSummary = $this->getEvolutionGraph(array(), array('nb_visits'), 'getIndexGraph');
         $this->setSparklinesAndNumbers($view);
         return $view->render();
     }
 
+	// sparkline.js:81 dataTable.trigger('reload', …); does not remove the old headline,
+	// so when updating this graph (such as when selecting a different metric)
+	// ONLY the graph should be returned
+	public function getIndexGraph()
+	{
+		return $this->getEvolutionGraph(array(), array(), __FUNCTION__);
+	}
+
     public function getSparklines()
     {
         $view = new View('@VisitsSummary/getSparklines');
@@ -106,6 +114,8 @@ class Controller extends \Piwik\Plugin\Controller
             $selectableColumns[] = 'nb_searches';
             $selectableColumns[] = 'nb_keywords';
         }
+		// $callingAction may be specified to distinguish between
+		// "VisitsSummary_WidgetLastVisits" and "VisitsSummary_WidgetOverviewGraph"
         $view = $this->getLastUnitGraphAcrossPlugins($this->pluginName, $callingAction, $columns,
             $selectableColumns, $documentation);
 
diff --git a/plugins/VisitsSummary/templates/index.twig b/plugins/VisitsSummary/templates/index.twig
index 235ccdbe8b..790d8fda14 100644
--- a/plugins/VisitsSummary/templates/index.twig
+++ b/plugins/VisitsSummary/templates/index.twig
@@ -1,6 +1,6 @@
 {# This graphId must be unique for this report #}
 <h2 piwik-enriched-headline
-    data-graph-id="VisitsSummary.index"
+    data-graph-id="VisitsSummary.getIndexGraph"
         >{{ 'General_EvolutionOverPeriod'|translate }}</h2>
 
 {{ graphEvolutionVisitsSummary|raw }}