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Rails 5.0.0.1，ActiveRecord包括select和HASU MUN THORT

activerecord

Rails 5.0.0.1，ActiveRecord包括select和HASU MUN THORT,activerecord,ruby-on-rails-5,Activerecord,Ruby On Rails 5,我正在使用以下代码行生成我的表： def index @documentation_languages = Documentation::Language .includes(:tags) .select(:id, :abbreviation, :name, :version) .order(:slug) end 他们会叫： SELECT "documentation_languages"."id", "documentation_languages"."abbre

我正在使用以下代码行生成我的表：

def index
  @documentation_languages = Documentation::Language
    .includes(:tags)
    .select(:id, :abbreviation, :name, :version)
    .order(:slug)
end
他们会叫：

SELECT "documentation_languages"."id", "documentation_languages"."abbreviation", "documentation_languages"."name", "documentation_languages"."version" FROM "documentation_languages" ORDER BY "documentation_languages"."slug" ASC
SELECT "documentation_language_tags".* FROM "documentation_language_tags" WHERE "documentation_language_tags"."language_id" IN (2, 3, 1, 4, 5, 6, 7, 8, 9, 10, 11, 13, 12, 14, 15, 16, 17)
SELECT "documentation_tags".* FROM "documentation_tags" WHERE "documentation_tags"."id" = 1
我正在使用
has\u many:tags，through:：language\u tags
内部
文档：：language
模型。是否有任何方法可以从包含的
标记表中选择
文档标记.name
？
我使用
的
范围
参数has\u many
将代码更改为：


has_many :tags, ->{ select(:name) }, through: :language_tags