feat: preload label list

app/models/concerns/labelable.rb

@@ -13,4 +13,15 @@ module Labelable
     new_labels << labels
     update!(label_list: new_labels)
   end
+
+  def preloaded_label_list
+    unless @taggings_cache
+      @taggings_cache = []
+      taggings.each do |tagging|
+        @taggings_cache << tagging.tag.name
+      end
+    end
+
+    @taggings_cache || []
+  end
 end

app/views/api/v1/conversations/partials/_conversation.json.jbuilder

@@ -33,7 +33,7 @@ json.can_reply conversation.can_reply?
 json.contact_last_seen_at conversation.contact_last_seen_at.to_i
 json.custom_attributes conversation.custom_attributes
 json.inbox_id conversation.inbox_id
-json.labels conversation.label_list
+json.labels conversation.preloaded_label_list
 json.muted conversation.muted?
 json.snoozed_until conversation.snoozed_until
 json.status conversation.status
@@ -42,4 +42,4 @@ json.timestamp conversation.last_activity_at.to_i
 json.first_reply_created_at conversation.first_reply_created_at.to_i
 json.unread_count conversation.unread_incoming_messages.count
 json.last_non_activity_message conversation.messages.non_activity_messages.first.try(:push_event_data)
-json.priority conversation.priority
+json.priority conversation.priority