在elasticsearch rails

Question

我有一个Genre模型，它的名字在genre_translations表中翻译（使用globalize gem）

我正在尝试使用elasticsearch-rails gem

索引模型

def as_indexed_json(options = {})
  as_json(
    only: %i(type available),
    methods: %i(name),
  )
end

但当我Genre.import时，我在rails控制台上获得以下内容：

[1] pry(main)> Genre.import
  Genre Load (27.1ms)  SELECT  "genres".* FROM "genres"  ORDER BY "genres"."id" ASC LIMIT 1000
  Genre::Translation Load (23.9ms)  SELECT "genre_translations".* FROM "genre_translations" WHERE "genre_translations"."genre_id" = $1  [["genre_id", 1]]
  Genre::Translation Load (0.3ms)  SELECT "genre_translations".* FROM "genre_translations" WHERE "genre_translations"."genre_id" = $1  [["genre_id", 2]]
  Genre::Translation Load (0.3ms)  SELECT "genre_translations".* FROM "genre_translations" WHERE "genre_translations"."genre_id" = $1  [["genre_id", 3]]
  ...

有关如何使用联接索引所有Genre项以避免N + 1行为的任何建议吗？

Answer 1

来自文档here

    # @example Pass an ActiveRecord query to limit the imported records
    #
    #    Article.import query: -> { where(author_id: author_id) }

所以你可以这样做：

 Genre.import query: -> { includes(:translations) }