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在我的 Rails 应用程序中，我正在执行以下步骤：

用户需要登录 -> 用户创建授权 -> 用户创建

该应用程序似乎在该过程的最后一步出现问题。

我成功创建授权：

Authorization Load (0.9ms)  SELECT "authorizations".* FROM "authorizations" WHERE "authorizations"."provider" = 'facebook' AND "authorizations"."uid" = '2259711' LIMIT 1
Authorization attributes hash: {"id"=>1, "uid"=>"2259711", "provider"=>"facebook", "user_id"=>1, "created_at"=>Wed, 02 May 2012 06:06:13 UTC +00:00, "updated_at"=>Wed, 02 May 2012 06:06:13 UTC +00:00}

但它随后在用户创建步骤中窒息：

User Load (0.8ms)  SELECT "users".* FROM "users" WHERE "users"."id" = 1 LIMIT 1
Completed 500 Internal Server Error in 26ms

RuntimeError (Called id for nil, which would mistakenly be 4 -- if you really wanted the id of nil, use object_id):
  app/controllers/sessions_controller.rb:21:in `create'

会话控制器的第 21 行是这样的：session[:user_id] = @auth.user.id

然而这没有任何意义，因为我已经清楚地用正确的 id 初始化了一个用户对象......

控制此步骤的代码如下：

会话#创建控制器

def create
    # create the auth hash here
    auth_hash = request.env['omniauth.auth']

    if session[:user_id]
      # Means our user is signed in. Add the authorization to the user
      User.find(session[:user_id]).add_provider(auth_hash)

      redirect_back_or User.find(session[:user_id])
#     render :text => "You can now login using #{auth_hash["provider"].capitalize} too!"
    else
      # Log him in or sign him up
      @auth = Authorization.find_or_create(auth_hash)

      # Create the session
      logger.debug "Person attributes hash: #{@auth.attributes.inspect}"
      session[:user_id] = @auth.user.id 
#       render :text => "Welcome #{auth.user.name}!"

      sign_in @auth.user
      redirect_back_or @auth.user
    end     
  end

授权 find_or_create 模型方法

def self.find_or_create(auth_hash)
        unless auth = find_by_provider_and_uid(auth_hash["provider"], auth_hash["uid"])
            user = User.create :name => auth_hash["info"]["name"], :email => auth_hash["info"]["email"]
            logger.debug "Within Authorization find_or_create: Person attributes hash: #{user.attributes.inspect}"
            auth = create :user => user, :provider => auth_hash["provider"], :uid => auth_hash["uid"]
        end
        auth
    end

更新

当我尝试这个时：logger.debug "User attributes hash: #{@auth.user.attributes.inspect}" 在上面的会话控制器中，我收到了这个错误：

NoMethodError (undefined method `attributes' for nil:NilClass):
  app/controllers/sessions_controller.rb:21:in `create'

这意味着用户对象为零。这不应该是这种情况，因为我在授权find_or_create方法中调用了 user.create ......

4

2 回答 2

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我认为这不会find_by_provider_and_uid设置用户属性，因此如果成功，您需要考虑到这一点。

auth = find_by_provider_and_uid(auth_hash["provider"], auth_hash["uid"])

if auth.nil? # i don't know if nil is the right condition to check for, my active record fu is not up to date.
   # do your unless code
else
   #need to fetch and set user property
end

auth
于 2012-05-02T22:31:30.987 回答
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用户可能未通过验证并且实际上并未被创建。更改User.create为User.create!，您将立即看到它是否未通过验证，因为它会引发异常。

于 2012-05-02T22:35:45.180 回答