ActiveModel as_json のオプション一覧 - Qiita

user.as_json(methods: :permalink) # => { "id" => 1, "name" => "Konata Izumi", "age" => 16, # "created_at" => "2006-08-01T17:27:13.000Z", "awesome" => true, # "permalink" => "1-konata-izumi" } user.as_json(include: :posts) # => { "id" => 1, "name" => "Konata Izumi", "age" => 16, # "created_at" => "2006-08-01T17:27:13.000Z", "awesome" => true, # "posts" => [ { "id" => 1, "author_id" => 1, "title" =>