在没有.htaccess的Heroku上托管的Rails3中强制'www'

Question

我想知道是否有一个Rack替代强制URL中的'www',因为Heroku不使用.htaccess文件.

也许甚至可以在路线上做到这一点？

谢谢

Answer 1

在ApplicationController中,您只需创建一个before过滤器:

before_filter :force_www!

protected

def force_www!
  if Rails.env.production? and request.host[0..3] != "www."
    redirect_to "#{request.protocol}www.#{request.host_with_port}#{request.fullpath}", :status => 301
  end
end

或者去另一个方向并删除www:

before_filter :remove_www!

protected

def remove_www!
  if Rails.env.production? and request.host[0..3] == "www."
    redirect_to "#{request.protocol}#{request.host_with_port[4..-1]}#{request.fullpath}", :status => 301
  end
end