Question

在我的rails应用程序中，我执行以下步骤：

用户需要登录 - ＆gt;用户创建授权 - ＆gt;用户已创建

该应用程序似乎在此过程的最后一步中绊倒。

我成功创建了授权：

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：session[:user_id] = @auth.user.id

然而这没有任何意义，因为我已经使用正确的id ...

清楚地初始化了一个用户对象

管理此步骤的代码如下：

Session＃create controller

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

当我尝试这样做时：logger.debug "User attributes hash: #{@auth.user.attributes.inspect}" 在上面的会话控制器中，我收到此错误：

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

表示用户对象为零。不应该是这种情况，因为我在授权find_or_create方法中调用user.create ...

Answer 1

我不认为find_by_provider_and_uid设置了用户属性，因此如果成功，则需要考虑到这一点。

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

Answer 2

用户可能无法通过验证，实际上并未创建。将User.create更改为User.create!，如果验证失败，您会立即看到，因为它会引发异常。

Rails对象属性混淆

2 个答案: