Filter by `None`/`Any` for labels in issues/mrs API

By using the parameters `?labels=None|Any` the user can filter
issues/mrs from the API that has `none/any` label.

Affected endpoints are:

- /api/issues
- /api/projects/:id/issues
- /api/groups/:id/issues
- /api/merge_requests
- /api/projects/:id/merge_requests
- /api/groups/:id/merge_requests

1 files changed, 1 insertions, 0 deletions

diff --git a/app/models/concerns/issuable.rb b/app/models/concerns/issuable.rb
index 69c5affe142..5080fe03cc8 100644
--- a/app/models/concerns/issuable.rb
+++ b/app/models/concerns/issuable.rb
@@ -90,6 +90,7 @@ module Issuable
     scope :order_milestone_due_asc,  -> { left_joins_milestones.reorder('milestones.due_date IS NULL, milestones.id IS NULL, milestones.due_date ASC') }
 
     scope :without_label, -> { joins("LEFT OUTER JOIN label_links ON label_links.target_type = '#{name}' AND label_links.target_id = #{table_name}.id").where(label_links: { id: nil }) }
+    scope :any_label, -> { joins(:label_links).group(:id) }
     scope :join_project, -> { joins(:project) }
     scope :inc_notes_with_associations, -> { includes(notes: [:project, :author, :award_emoji]) }
     scope :references_project, -> { references(:project) }