Fix: 一部サーバーの投稿が参照引用できない問題・参照引用時、フェッチを基本しないよう変更 (#360)

db/migrate/20231214225249_index_to_statuses_url.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+class IndexToStatusesURL < ActiveRecord::Migration[7.1]
+  disable_ddl_transaction!
+
+  def up
+    add_index :statuses, :url, name: :index_statuses_on_url, algorithm: :concurrently, opclass: :text_pattern_ops, where: 'url IS NOT NULL AND url <> uri'
+  end
+
+  def down
+    remove_index :statuses, name: :index_statuses_on_url
+  end
+end