From 8ac3f0189159b74e1209adae404ec18a9babec9a Mon Sep 17 00:00:00 2001
From: Alexandr Velikiy <39257464+VargBurz@users.noreply.github.com>
Date: Thu, 3 Oct 2019 14:49:36 +0300
Subject: [PATCH] Panels are not rendered without a refresh sometimes #223
 (#383)

* add check for undefined

* check on top

* render
---
 src/panel/graph_panel/graph_ctrl.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/panel/graph_panel/graph_ctrl.ts b/src/panel/graph_panel/graph_ctrl.ts
index 081489d..0ecd0f4 100644
--- a/src/panel/graph_panel/graph_ctrl.ts
+++ b/src/panel/graph_panel/graph_ctrl.ts
@@ -324,6 +324,7 @@ class GraphCtrl extends MetricsPanelCtrl {
       this.$graphElem, this.timeSrv, this.contextSrv, this.$scope, this.analyticsController
     );
     this._graphLegend = new GraphLegend(this.$legendElem, this.popoverSrv, this.$scope, this.analyticsController);
+    this.onRender();
   }
 
   issueQueries(datasource) {
@@ -422,7 +423,7 @@ class GraphCtrl extends MetricsPanelCtrl {
   }
 
   onRender() {
-    if(!this.seriesList) {
+    if(!this.seriesList || !this._graphRenderer || !this._graphLegend) {
       return;
     }