Rails渲染json - 如何下载响应？

Question

如何设置响应以便浏览器下载动态生成的json数据，而不显示？

我正在使用Active Admin

  member_action :download, :method => :get do
    application = Application.find(params[:id])
    respond_to do |format|
      format.json { render json: application.to_json( include: { categories: { include: { my_cases: { include: [{ questions: { include: :answers } }, :keys ] } } } } ) }
    end
  end

Answer 1

使用send_data方法：

respond_to do |format|
  format.json { send_data application.to_json( include: { categories: { include: { my_cases: { include: [{ questions: { include: :answers } }, :keys ] } } } } ), type: :json, disposition: "attachment" }
end