OmniAuth 不适用于 Rails3 中的 Route Globbing [英] OmniAuth doesn't work with Route Globbing in Rails3

问题描述

我正在尝试遵循 Railscast 241 Simple OmniAuth 并且它工作正常，除非我在 /config/routes.rb 的末尾有 Route Globbing:

I am trying to follow the Railscast 241 Simple OmniAuth and it works fine unless I have Route Globbing at the end of /config/routes.rb:

match '*uri' => "posts#index"

如果我使用通配请求 /auth/twitter 那么 OmniAuth 什么都不做:

If I request /auth/twitter with the globbing then OmniAuth does nothing:

Started GET "/auth/twitter" for 127.0.0.1 at 2011-04-03 19:17:44 +0200
  Processing by PostsController#index as HTML
  Parameters: {"uri"=>"auth/twitter"}
Rendered posts/index.html.haml within layouts/application (9.0ms)
Completed 200 OK in 103ms (Views: 14.6ms | ActiveRecord: 0.7ms)

如果没有 globbing 路由，它可以正确进行身份验证.

Without the globbing route it authenticates correctly.

有没有办法同时拥有路由通配符和 OmniAuth?

Is there a way to have both the route globbing and OmniAuth?

推荐答案

OmniAuth 过程是在调用 /auth/:provider URL 时提供以下功能:

The OmniAuth process is to provide the following functionality when a /auth/:provider URL is called:

1. 将请求传递给底层 Rack/Rails 应用，就好像 OmniAuth 不存在一样；
2. 确定底层应用程序是否生成了 404；
3. 如果是，请调用实际的 OmniAuth 功能.

由于您基本上使用路由全局匹配所有内容，您的应用程序永远不会给出 404，OmniAuth 无法完成它的工作.我看到两个直接选项.

Since you are essentially matching everything using your route globbing, your application will never give 404's, and OmniAuth cannot do it's job. I see two immediate options.

按如下方式添加新路由:

Add a new route as follows:

match '/auth/:provider' => 'omniauth#passthru'

然后创建一个生成 404 的控制器和动作:

Then create a controller and action that generates a 404:

class OmniauthController < ApplicationController
  def passthru
    render :file => "#{Rails.root}/public/404.html", :status => 404, :layout => false
  end
end

确定 Glob 路由中的 404 状态

我假设您的 glob 路由会以某种方式搜索与 URL 匹配的帖子；您可以忽略(例如，当 PostsController#index 找不到帖子时)然后生成 404.

Determine 404 Status in the Glob Route

I assume that your glob route will search for a post matching the URL somehow; you can take misses (e.g. when PostsController#index can't find a post) and generate 404's then.

class PostsController < ApplicationController
  def index
    if @posts = Post.find_by_current_url_or_whatever
      render 'index'
    else
      render :file => "#{Rails.root}/public/404.html", :status => 404, :layout => false
    end
  end
end

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