将CSV呈现链接为HTML

我的rails应用程序中有一个链接，应该导出CSV。但是当我点击链接时，它会将页面重新加载为html。我尝试添加response.headers['Content-Type'] = 'text/csv'

response.headers['Content-Disposition'] = 'attachment; filename=invoice.csv'到控制器，但这没有帮助。

调节器
def index

respond_to do |format|

format.html
format.csv do
  response.headers['Content-Type'] = 'text/csv'
  response.headers['Content-Disposition'] = 'attachment; filename=custome_incentives.csv'
  send_data @incentives.to_csv
end

end
end
ERB
<%= link_to 'Download to CSV', incentives_path(property.slug, format: :csv), class: 'btn csv' %>