Hide group sidebar menu if user cant access it

app/views/layouts/nav/_group.html.haml

@@ -12,34 +12,35 @@
       = icon('dashboard fw')
       %span
         Group
-  - if current_user
-    = nav_link(controller: [:group, :milestones]) do
-      = link_to group_milestones_path(@group), title: 'Milestones', data: {placement: 'right'} do
-        = icon('clock-o fw')
+  - if can?(current_user, :read_group, @group)
+    - if current_user
+      = nav_link(controller: [:group, :milestones]) do
+        = link_to group_milestones_path(@group), title: 'Milestones', data: {placement: 'right'} do
+          = icon('clock-o fw')
+          %span
+            Milestones
+    = nav_link(path: 'groups#issues') do
+      = link_to issues_group_path(@group), title: 'Issues', data: {placement: 'right'} do
+        = icon('exclamation-circle fw')
         %span
-          Milestones
-  = nav_link(path: 'groups#issues') do
-    = link_to issues_group_path(@group), title: 'Issues', data: {placement: 'right'} do
-      = icon('exclamation-circle fw')
-      %span
-        Issues
-        - if current_user
-          %span.count= Issue.opened.of_group(@group).count
-  = nav_link(path: 'groups#merge_requests') do
-    = link_to merge_requests_group_path(@group), title: 'Merge Requests', data: {placement: 'right'} do
-      = icon('tasks fw')
-      %span
-        Merge Requests
-        - if current_user
-          %span.count= MergeRequest.opened.of_group(@group).count
-  = nav_link(controller: [:group_members]) do
-    = link_to group_group_members_path(@group), title: 'Members', data: {placement: 'right'} do
-      = icon('users fw')
-      %span
-        Members
-  - if can?(current_user, :admin_group, @group)
-    = nav_link(html_options: { class: "separate-item" }) do
-      = link_to edit_group_path(@group), title: 'Settings', data: {placement: 'right'} do
-        = icon ('cogs fw')
+          Issues
+          - if current_user
+            %span.count= Issue.opened.of_group(@group).count
+    = nav_link(path: 'groups#merge_requests') do
+      = link_to merge_requests_group_path(@group), title: 'Merge Requests', data: {placement: 'right'} do
+        = icon('tasks fw')
+        %span
+          Merge Requests
+          - if current_user
+            %span.count= MergeRequest.opened.of_group(@group).count
+    = nav_link(controller: [:group_members]) do
+      = link_to group_group_members_path(@group), title: 'Members', data: {placement: 'right'} do
+        = icon('users fw')
         %span
-          Settings
+          Members
+    - if can?(current_user, :admin_group, @group)
+      = nav_link(html_options: { class: "separate-item" }) do
+        = link_to edit_group_path(@group), title: 'Settings', data: {placement: 'right'} do
+          = icon ('cogs fw')
+          %span
+            Settings