Add can_subscribe_to_label_in_different_levels helper method

app/helpers/labels_helper.rb

@@ -133,6 +133,10 @@ module LabelsHelper
     end
   end
+  def can_subscribe_to_label_in_different_levels?(label)
+    defined?(@project) || label.is_a?(GroupLabel)
+  end
+
   def label_subscription_status(label, project)
     return 'group-level' if label.subscribed?(current_user)
     return 'project-level' if label.subscribed?(current_user, project)

app/views/shared/_label.html.haml

@@ -20,16 +20,16 @@
             view open issues
         - if current_user
           %li.label-subscription
-            - if defined?(@group) || label.is_a?(ProjectLabel)
-              %a.js-subscribe-button.label-subscribe-button{ role: 'button', href: '#', data: { status: status, url: toggle_subscription_path } }
-                %span= label_subscription_toggle_button_text(label, @project)
-            - else
+            - if can_subscribe_to_label_in_different_levels?(label)
               %a.js-unsubscribe-button.label-subscribe-button{ role: 'button', href: '#', class: ('hidden' if status.unsubscribed?), data: { url: toggle_subscription_path } }
                 %span Unsubscribe
               %a.js-subscribe-button.label-subscribe-button{ role: 'button', href: '#', class: ('hidden' unless status.unsubscribed?), data: { url: toggle_subscription_namespace_project_label_path(@project.namespace, @project, label) } }
                 %span Subscribe at project level
               %a.js-subscribe-button.label-subscribe-button{ role: 'button', href: '#', class: ('hidden' unless status.unsubscribed?), data: { url: toggle_subscription_group_label_path(label.group, label) } }
                 %span Subscribe at group level
+            - else
+              %a.js-subscribe-button.label-subscribe-button{ role: 'button', href: '#', data: { status: status, url: toggle_subscription_path } }
+                %span= label_subscription_toggle_button_text(label, @project)
         - if can?(current_user, :admin_label, label)
           %li
@@ -45,11 +45,7 @@
     - if current_user
       .label-subscription.inline
-        - if defined?(@group) || label.is_a?(ProjectLabel)
-          %button.js-subscribe-button.label-subscribe-button.btn.btn-default{ type: 'button', data: { status: status, url: toggle_subscription_path } }
-            %span= label_subscription_toggle_button_text(label, @project)
-            = icon('spinner spin', class: 'label-subscribe-button-loading')
-        - else
+        - if can_subscribe_to_label_in_different_levels?(label)
           %button.js-unsubscribe-button.label-subscribe-button.btn.btn-default{ type: 'button', class: ('hidden' if status.unsubscribed?), data: { url: toggle_subscription_path } }
             %span Unsubscribe
             = icon('spinner spin', class: 'label-subscribe-button-loading')
@@ -64,6 +60,10 @@
                   Project level
                 %a.js-subscribe-button{ data: { url: toggle_subscription_group_label_path(label.group, label) } }
                   Group level
+        - else
+          %button.js-subscribe-button.label-subscribe-button.btn.btn-default{ type: 'button', data: { status: status, url: toggle_subscription_path } }
+            %span= label_subscription_toggle_button_text(label, @project)
+            = icon('spinner spin', class: 'label-subscribe-button-loading')
     - if label.is_a?(ProjectLabel) && label.project.group && can?(current_user, :admin_label, label.project.group)
       = link_to promote_namespace_project_label_path(label.project.namespace, label.project, label), title: "Promote to Group Label", class: 'btn btn-transparent btn-action', data: {confirm: "Promoting this label will make this label available to all projects inside this group. Existing project labels with the same name will be merged. Are you sure?", toggle: "tooltip"}, method: :post do
@@ -78,9 +78,9 @@
         = icon('trash-o')
   - if current_user
-    - if defined?(@group) || label.is_a?(ProjectLabel)
+    - if can_subscribe_to_label_in_different_levels?(label)
       :javascript
-        new gl.ProjectLabelSubscription('##{dom_id(label)} .label-subscription');
+        new gl.GroupLabelSubscription('##{dom_id(label)} .label-subscription');
     - else
       :javascript
-        new gl.GroupLabelSubscription('##{dom_id(label)} .label-subscription');
+        new gl.ProjectLabelSubscription('##{dom_id(label)} .label-subscription');