Ruby-on-rails 将参数值作为 rails 中的查询字符串传递给 redirect_to
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Passing param values to redirect_to as querystring in rails
提问by Justin
This should be simple, but I can't seem to find an easy answer.
这应该很简单，但我似乎找不到简单的答案。
How can I pass param values from the current request into a redirect_to call? I have some form values I'd like to pass into the query string of a GET redirect
如何将当前请求中的参数值传递到 redirect_to 调用中？我有一些表单值我想传递到 GET 重定向的查询字符串中
I'd like to do something like:
我想做类似的事情：
redirect_to @thing, :foo => params[:foo]
and get sent to:
并发送至：
http://things/4?[foo][key1]=val1&[foo][key2]=val2
Thanks!
谢谢！
Also - how could this be handled for a redirect_to :back?
另外 - 如何处理 redirect_to :back ？
redirect_to :back, :foo => params[:foo]
回答by Jordan Brough
The 'Record' form of redirect_touses the second argument only for the response status. You'll have to use another form of redirect_to, like the 'String' form. e.g.:
“记录”形式redirect_to的第二个参数仅用于响应状态。您必须使用另一种形式的 redirect_to，例如“字符串”形式。例如：
redirect_to thing_path(@thing, :foo => params[:foo])
which will work for nested params[:foo]params like you mentioned. Or, as Drew commented below, you can use polymorphic_url(or _path):
这将适用于params[:foo]您提到的嵌套参数。或者，正如 Drew 在下面评论的那样，您可以使用polymorphic_url（或 _path）：
redirect_to polymorphic_path(@thing, :foo => params[:foo])
回答by Drew Blas
To add to Jordan's answer:
添加乔丹的回答：
If you don't know what type of object @thingmight be, you can use the universal polymorphic_urlmethod. This is the method that is called internally when you pass in an object to redirect_toanyway.
如果您不知道@thing可能是什么类型的对象，则可以使用通用polymorphic_url方法。这是当您以redirect_to任何方式传递对象时在内部调用的方法。
