redirect_to != 返回 [英] redirect_to != return

问题描述

我正在寻找有关 redirect_to 行为的说明.

I'm looking for some clarification regarding the behaviour of redirect_to.

我有这个代码:

if some_condition
   redirect_to(path_one)
end

redirect_to(path_two)

如果 some_condition == true 我得到这个错误:

If some_condition == true I get this error:

在此操作中多次调用渲染和/或重定向.请注意，您只能调用渲染或重定向，并且每个操作最多只能调用一次.

Render and/or redirect were called multiple times in this action. Please note that you may only call render OR redirect, and at most once per action.

在redirect_to 调用后，该方法似乎继续执行.我是否需要编写这样的代码:

It seems that the method continues to execute after the redirect_to call. Do I need to write code like this:

if some_condition
   redirect_to(path_one)
   return
end

redirect_to(path_two)

推荐答案

是的，重定向时需要从方法中返回.它实际上只是为响应对象添加了适当的标头.

Yes, you need to return from method when doing redirect. It actually only adds appropriate headers for the response object.

你可以写更多的rubyish方式:

You can write more rubyish way:

if some_condition
    return redirect_to(path_one)
end

redirect_to(path_two)

或其他方式:

return redirect_to(some_condition ? path_one : path_two)

或其他方式:

redirect_path = path_one

if some_condition
    redirect_path = path_two
end

redirect_to redirect_path

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