1 files changed, 10 insertions, 0 deletions
diff --git a/app/services/issuable_base_service.rb b/app/services/issuable_base_service.rb
index e3dc569152c..2d96efe1042 100644
--- a/app/services/issuable_base_service.rb
+++ b/app/services/issuable_base_service.rb
@@ -101,6 +101,7 @@ class IssuableBaseService < BaseService
 
   def update(issuable)
     change_state(issuable)
+    change_subscription(issuable)
     filter_params
     old_labels = issuable.labels.to_a
 
@@ -124,6 +125,15 @@ class IssuableBaseService < BaseService
     end
   end
 
+  def change_subscription(issuable)
+    case params.delete(:subscription_event)
+    when 'subscribe'
+      issuable.subscribe(current_user)
+    when 'unsubscribe'
+      issuable.unsubscribe(current_user)
+    end
+  end
+
   def has_changes?(issuable, old_labels: [])
     valid_attrs = [:title, :description, :assignee_id, :milestone_id, :target_branch]