将Elixir Phoenix请求从根域重定向到www

rea*_*eal 6 redirect heroku elixir phoenix-framework

我们在Route 53上有一个关于Heroku的Phoenix应用程序和DNS.我们按照这篇博文来设置正确的http到https重定向:http:
//building.vts.com/blog/2015/11/02/route53-ssl-裸域重定向/

一切正常,剩下的就是将根重定向到子域www.

是否有推荐的方式以Phoenix方式设置它?

fny*_*fny 8

只需插入应用端点顶部的重定向即可.

lib/app/endpoint.ex:

defmodule App.Endpoint do
  use Phoenix.Endpoint, otp_app: :app

  socket "/socket", App.UserSocket

  plug App.Plugs.WWWRedirect
  # ...
end
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lib/app/plugs/www_redirect.ex:

defmodule App.Plugs.WWWRedirect do
  import Plug.Conn

  def init(options) do
    options
  end

  def call(conn, _options) do
    if bare_domain?(conn.host) do
      conn
        |> Phoenix.Controller.redirect(external: www_url(conn))
        |> halt
    else
      conn # Since all plugs need to return a connection
    end
  end

  # Returns URL with www prepended for the given connection. Note this also
  # applies to hosts that already contain "www"
  defp www_url(conn) do
    "#{conn.scheme}://www.#{conn.host}"
  end

  # Returns whether the domain is bare (no www)
  defp bare_domain?(host) do
    !Regex.match?(~r/\Awww\..*\z/i, host)
  end
end
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请注意,您需要重新启动服务器才能生效,因为没有lib重新加载.