Use Rails' index_by where it makes sense (#15542)

* Use Rails' index_by where it makes sense

* Fix tests

Co-authored-by: Claire <claire.github-309c@sitedethib.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/mastodon/media_cli.rb b/lib/mastodon/media_cli.rb
index 5f4a414b1..59c118500 100644
--- a/lib/mastodon/media_cli.rb
+++ b/lib/mastodon/media_cli.rb
@@ -326,7 +326,7 @@ module Mastodon
       end
 
       preload_map.each_with_object({}) do |(model_name, record_ids), model_map|
-        model_map[model_name] = model_name.constantize.where(id: record_ids).each_with_object({}) { |record, record_map| record_map[record.id] = record }
+        model_map[model_name] = model_name.constantize.where(id: record_ids).index_by(&:id)
       end
     end
   end