From 400a9704f41dd88cdb7cbe29ac6691699e8e768c Mon Sep 17 00:00:00 2001
From: Martin Fenner <martin.fenner@datacite.org>
Date: Tue, 20 Apr 2021 10:44:04 +0200
Subject: [PATCH] aggregate citation years

---
 app/models/event.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/app/models/event.rb b/app/models/event.rb
index 381475411..16f32b98b 100644
--- a/app/models/event.rb
+++ b/app/models/event.rb
@@ -263,6 +263,7 @@ def self.query_aggregations
           },
           min_doc_count: 1,
         },
+        aggs: { bucket_truncate: { bucket_sort: { size: 10 } } },
       },
       registrants: {
         terms: { field: "registrant_id", size: 10, min_doc_count: 1 },