如何在rails activeadmin CSV中迭代数组？

# app/admin/your_resource.rb

ActiveAdmin.register YourResource do
  # ...

  collection_action :export_csv, method: :get do
    @resources = YourResource.all

    respond_to do |format|
      format.csv { send_data generate_csv(@resources), filename: "your_resource.csv" }
    end
  end

  # ...

  controller do
    def generate_csv(resources)
      CSV.generate(headers: true) do |csv|
        # 在这里迭代数组并将数据写入CSV文件
        csv << ['Column 1', 'Column 2', 'Column 3'] # CSV文件的标题行

        resources.each do |resource|
          csv << [resource.attribute1, resource.attribute2, resource.attribute3] # CSV文件的数据行
        end
      end
    end
  end
end

# app/admin/your_resource.rb

ActiveAdmin.register YourResource do
  # ...

  index do
    # ...

    column 'Export CSV' do |resource|
      link_to 'Export', export_csv_admin_your_resource_path(format: :csv)
    end
  end

  # ...
end

# Gemfile

gem 'csv'