Merge branch 'bvl-unlink-fixes' into 'master'

This fixes some bugs related to forked projects of which the source was deleted.

Closes #39667

See merge request gitlab-org/gitlab-ce!15150

1 files changed, 11 insertions, 5 deletions

diff --git a/app/services/projects/unlink_fork_service.rb b/app/services/projects/unlink_fork_service.rb
index 2b82e5732e4..c499f384426 100644
--- a/app/services/projects/unlink_fork_service.rb
+++ b/app/services/projects/unlink_fork_service.rb
@@ -3,18 +3,24 @@ module Projects
     def execute
       return unless @project.forked?
 
-      @project.forked_from_project.lfs_objects.find_each do |lfs_object|
-        lfs_object.projects << @project
+      if fork_source = @project.fork_source
+        fork_source.lfs_objects.find_each do |lfs_object|
+          lfs_object.projects << @project
+        end
+
+        refresh_forks_count(fork_source)
       end
 
-      merge_requests = @project.forked_from_project.merge_requests.opened.from_project(@project)
+      merge_requests = @project.fork_network
+                         .merge_requests
+                         .opened
+                         .where.not(target_project: @project)
+                         .from_project(@project)
 
       merge_requests.each do |mr|
         ::MergeRequests::CloseService.new(@project, @current_user).execute(mr)
       end
 
-      refresh_forks_count(@project.forked_from_project)
-
       @project.fork_network_member.destroy
       @project.forked_project_link.destroy
     end