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

我认为这应该很容易，但是我不熟悉它的完成方式...

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

您如何编写一个before过滤器来检查是否当前请求是针对某些子域的，如果是这样，将其重定向到相同的URL，但在不同的子域上？

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/产品/ 123 。

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

我在想类似...

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

如何编写该重定向？

推荐答案

ActionController :: Redirecting＃redirect_to 允许您传递绝对URL，因此最简单的方法是要做的就是通过以下方式传递它：

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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