Ruby on rails 创建作用域方法

我在玩活动唱片声誉宝石。在我的应用程序中，我创建了一个声誉系统，用户在获得答案的每一次投票中都会获得声誉分数，如果他得到了最佳答案，则会获得额外的分数（代码未显示）。在

User.rb

模型中，我计算了一个“因果报应”声誉（见下文），它仅仅是他所获得的两种积分的总和

has_reputation :karma,
    :source => [
      { :reputation => :total_vote_points },
      { :reputation => :total_best_points }
    ]

  has_reputation :total_vote_points,
    :source => {reputation: :votes, of: :answers}

  has_reputation :total_best_points, 
    :source => {reputation: :best, of: :answers}

total_vote_points信誉将创建这样一个表记录，target_id:8是用户的id

#<ReputationSystem::Reputation id: 24, reputation_name: "total_vote_points", value: 1.0, aggregated_by: "sum", target_id: 8, target_type: "User", active: true, created_at: "2013-03-25 06:07:28", updated_at: "2013-03-25 06:07:28">

使用我上面的代码，如果我想检查“本周”和“所有时间”的业力点，我猜会是这样的

  has_reputation :karma,
    :source => [
      { :reputation => :total_vote_points },
      { :reputation => :total_best_points }
    ], 
    :scopes => [:thisWeek, :allTime]

我想知道我将如何编写：thisWeek（本周获得的业力积分）和：allTime（没有限制的业力积分）范围方法

知道“因果报应”的一个声誉表记录是这样的

#<ReputationSystem::Reputation id: 28, reputation_name: "karma", value: 11.0, aggregated_by: "sum", target_id: 7, target_type: "User", active: true, created_at: "2013-03-25 06:07:35", updated_at: "2013-03-25 06:07:35">

 #<ReputationSystem::Reputation id: 28, reputation_name: "karma", value: 11.0, aggregated_by: "sum", target_id: 7, target_type: "User", active: true, created_at: "2013-03-25 06:07:35", updated_at: "2013-03-25 06:07:35">

#

您能建议我如何编写所需的作用域方法吗

 #<ReputationSystem::Reputation id: 28, reputation_name: "karma", value: 11.0, aggregated_by: "sum", target_id: 7, target_type: "User", active: true, created_at: "2013-03-25 06:07:35", updated_at: "2013-03-25 06:07:35">