don't show time for triggers with lastchange=0, fix #412

src/panel-triggers/partials/module.html

@@ -25,7 +25,7 @@
                     ng-style="{color: trigger.color}">
                     {{trigger.severity}}
                   </span>
-                  for {{trigger.age}}
+                  {{trigger.age && "for " + trigger.age}}
 
                   <span class="alert-list-info alert-list-info-left" ng-if="ctrl.panel.descriptionField">
                     {{trigger.comments}}
@@ -39,7 +39,7 @@
                   <i class="gicon gicon-datasources"></i>
                   {{trigger.datasource}}
                 </span>
-                <span class="alert-list-text">{{trigger.lastchange}}</span>
+                <span class="alert-list-text">{{trigger.lastchange || "last change unknown"}}</span>
               </div>
 
               <div class="trigger-info-block">

src/panel-triggers/triggers_panel_ctrl.js

@@ -344,6 +344,12 @@ export class TriggerPanelCtrl extends PanelCtrl {
   }
 
   setTriggerLastChange(trigger) {
+    if (!trigger.lastchangeUnix) {
+      trigger.lastchange = "";
+      trigger.age = "";
+      return trigger;
+    }
+
     let timestamp = moment.unix(trigger.lastchangeUnix);
     if (this.panel.customLastChangeFormat) {
       // User defined format