管理平台--帮助中心文章发布，增加错误提示

src/main/webapp/resources/js/admin/controllers/help/HelpDetailCtrl.js

@@ -8,11 +8,15 @@ define(['app/app'], function(app) {
         HelpIssue.get({id : $stateParams.id}, function (data) {
             $scope.issue = data;
             quill.setContents(angular.fromJson($scope.issue.content));
-            HelpAPI.get({id :　$scope.issue.navId},function (data) {
-                $scope.issue.nav = data;
-            }, function (response) {
-                toaster.pop('error', response.data);
-            });
+            if ($scope.issue.navId) {
+                HelpAPI.get({id :　$scope.issue.navId},function (data) {
+                    $scope.issue.nav = data;
+                }, function (response) {
+                    toaster.pop('error', response.data);
+                });
+            } else {
+                toaster.pop('warning', '暂无导航信息，请补充');
+            }
         }, function (response) {
             toaster.pop('error', response.data);
         });