Fix host group list update.

zabbix/partials/query.editor.html

@@ -1,4 +1,3 @@
-
 <div class="editor-row">
   <div  ng-repeat="target in panel.targets"
      class="grafana-target"
@@ -114,7 +113,7 @@
               class="input-medium grafana-target-segment-input"
               ng-change="selectItem()"
               ng-model="target.item"
-                        bs-tooltip="target.expandedName.length > 30 ? target.expandedName : ''"
+              bs-tooltip="target.item.expandedName.length > 30 ? target.item.expandedName : ''"
               ng-options="item.expandedName for item in metric.itemList" >
             <option value="">--select item--</option>
           </select>

zabbix/queryCtrl.js

@@ -8,11 +8,6 @@ function (angular, _) {
   var module = angular.module('grafana.controllers');
   var targetLetters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
 
-  var hostGroupList = [];
-  var hostList = [];
-  var applicationList = [];
-  var itemList = [];
-
   module.controller('ZabbixAPITargetCtrl', function($scope) {
 
     $scope.init = function() {
@@ -26,7 +21,11 @@ function (angular, _) {
 
       // Update host group, host, application and item lists
       $scope.updateHostGroupList();
+      if ($scope.target.hostGroup) {
+        $scope.updateHostList($scope.target.hostGroup.groupid);
+      } else {
         $scope.updateHostList();
+      }
       if ($scope.target.host) {
         $scope.updateAppList($scope.target.host.hostid);
         if ($scope.target.application) {