如果你有动态数据，你可以使用 ajax，但据我从你的简要信息中看到，你总是可以直接从你的视图中执行该控制器函数:

You can use ajax if you have dynamic data, but as far as I can see from your brief info, you can always execute that controller function directly from your view:

{% render "MyMyBundle:User:generateCode" with { 'url': 'your url here' } %}

有关此的更多信息，请访问:http://symfony.com/doc/2.0/quick_tour/the_view.html, 在嵌入其他控制器下

More Information on this available at: http://symfony.com/doc/2.0/quick_tour/the_view.html, under Embedding other Controllers