rails redirect_to :back 不起作用 [英] rails redirect_to :back not working

问题描述

我正在尝试使用以下内容:

I'm trying to use the following:

class PaymentsController < ApplicationController

  def addproduct
     (session[:products] ||= []) << params[:item]
     redirect_to :back
  end

 end

我遇到了这个异常:

undefined method `back_url' for #<PaymentsController:0x007ff682c467a8>

为什么会这样?

推荐答案

Rails 5 具有 redirect_back，而不是 redirect_to :back.当请求的 HTTP_REFERER 不存在时，它被更改为用于引发异常.

Rails 5 has redirect_back, instead of redirect_to :back. It was changed as it used to raise an exception when request's HTTP_REFERER was not present.

所以用这个:

redirect_back fallback_location: root_path

您可以根据需要将 root_path 更改为其他内容.

You can change root_path to something else as per your requirements.

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