1 files changed, 29 insertions, 0 deletions
diff --git a/app/models/issue_assignee.rb b/app/models/issue_assignee.rb
new file mode 100644
index 00000000000..b94b55bb1d1
--- /dev/null
+++ b/app/models/issue_assignee.rb
@@ -0,0 +1,29 @@
+class IssueAssignee < ActiveRecord::Base
+  extend Gitlab::CurrentSettings
+
+  belongs_to :issue
+  belongs_to :assignee, class_name: "User", foreign_key: :user_id
+
+  after_create :update_assignee_cache_counts
+  after_destroy :update_assignee_cache_counts
+
+  # EE-specific
+  after_create :update_elasticsearch_index
+  after_destroy :update_elasticsearch_index
+  # EE-specific
+
+  def update_assignee_cache_counts
+    assignee&.update_cache_counts
+  end
+
+  def update_elasticsearch_index
+    if current_application_settings.elasticsearch_indexing?
+      ElasticIndexerWorker.perform_async(
+        :update,
+        'Issue',
+        issue.id,
+        changed_fields: ['assignee_ids']
+      )
+    end
+  end
+end