1 files changed, 20 insertions, 0 deletions
diff --git a/app/models/incident_management/timeline_event_tag.rb b/app/models/incident_management/timeline_event_tag.rb
new file mode 100644
index 00000000000..cde3afcaa16
--- /dev/null
+++ b/app/models/incident_management/timeline_event_tag.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+module IncidentManagement
+  class TimelineEventTag < ApplicationRecord
+    self.table_name = 'incident_management_timeline_event_tags'
+
+    belongs_to :project, inverse_of: :incident_management_timeline_event_tags
+
+    has_many :timeline_event_tag_links,
+      class_name: 'IncidentManagement::TimelineEventTagLink'
+
+    has_many :timeline_events,
+      class_name: 'IncidentManagement::TimelineEvent',
+      through: :timeline_event_tag_links
+
+    validates :name, presence: true, format: { with: /\A[^,]+\z/ }
+    validates :name, uniqueness: { scope: :project_id }
+    validates :name, length: { maximum: 255 }
+  end
+end