Rails:重定向到当前路径但不同的子域 [英] Rails: redirect to current path but different subdomain

问题描述

我认为这应该相当简单，但我不熟悉它是如何完成的...

I think this should be fairly easy but I'm not familiar with how it's done...

如何编写一个 before 过滤器来检查当前请求是否针对某些子域，如果是，则将其重定向到相同的 url 但位于不同的子域上?

How do you write a before filter that would check if the current request is for certain subdomains, and if so redirect it to the same url but on a different subdomain?

即:blog.myapp.com/posts/1 很好，但 blog.myapp.com/products/123 重定向到 www.myapp.com/products/123.

Ie: blog.myapp.com/posts/1 is fine but blog.myapp.com/products/123 redirects to www.myapp.com/products/123.

我在想像……

class ApplicationController < ActionController::Base
  before_filter :ensure_domain

  protected
  def ensure_domain
    if request.subdomain == 'blog' && controller_name != 'posts'
      redirect_to # the same url but at the 'www' subdomain...
    end
  end
end

你如何编写重定向?

推荐答案

ActionController::Redirecting#redirect_to 允许您传递一个绝对 URL，因此最简单的方法是使用以下内容传递它:

ActionController::Redirecting#redirect_to allows you to pass an absolute URL, so the easiest thing to do would be to pass it one with something like:

redirect_to request.url.sub('blog', 'www')

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