Add some data attributes for options in namespace selector

app/helpers/namespaces_helper.rb

@@ -4,7 +4,9 @@ module NamespacesHelper
   end
 
   def namespaces_options(selected = :current_user, display_path: false, extra_group: nil)
-    groups = current_user.owned_groups + current_user.masters_groups
+    groups  = current_user.owned_groups + current_user.masters_groups
+    users   = [current_user.namespace]
+    options = []
 
     unless extra_group.nil? || extra_group.is_a?(Group)
       extra_group = Group.find(extra_group) if Namespace.find(extra_group).kind == 'group'
@@ -14,22 +16,8 @@ module NamespacesHelper
       groups |= [extra_group]
     end
 
-    users = [current_user.namespace]
-
-    data_attr_group = { 'data-options-parent' => 'groups' }
-    data_attr_users = { 'data-options-parent' => 'users' }
-
-    group_opts = [
-      "Groups", groups.sort_by(&:human_name).map { |g| [display_path ? g.full_path : g.human_name, g.id, data_attr_group] }
-    ]
-
-    users_opts = [
-      "Users", users.sort_by(&:human_name).map { |u| [display_path ? u.path : u.human_name, u.id, data_attr_users] }
-    ]
-
-    options = []
-    options << group_opts
-    options << users_opts
+    options << options_for_group(groups, display_path)
+    options << options_for_group(users, display_path)
 
     if selected == :current_user && current_user.namespace
       selected = current_user.namespace.id
@@ -45,4 +33,17 @@ module NamespacesHelper
       avatar_icon(namespace.owner.email, size)
     end
   end
+
+  private
+
+  def options_for_group(namespaces, display_path)
+    type = namespaces.first.is_a?(Group) ? 'group' : 'users'
+
+    elements = namespaces.sort_by(&:human_name).map! do |n|
+      [display_path ? n.full_path : n.human_name, n.id,
+       data: { options_parent: type, visibility_level: n.visibility_level_value, name: n.human_name }]
+    end
+
+    [type.camelize, elements]
+  end
 end