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我正在玩 Active Record Reputation gem https://github.com/twitter/activerecord-reputation-system/wiki/Scope-Reputations。在我的应用程序中,我创建了一个信誉系统,用户可以根据他收到的每一个答案投票获得信誉积分,如果他收到最佳答案,则可以获得额外积分(该代码未显示)。在User.rb模型中,我计算了一个“业力”声誉(见下文),它只是将他获得的两种积分的总和相加。

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 信誉将创建这样的表记录,其中 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">

karam 声誉将创建一个像这样的表记录

#<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">

继续前进,gem 文档说范围可以添加到声誉中,但不要详细说明。它给出了这个例子

has_reputation :name,
    ...
    :scopes => [:scope1, :scope2, ...]

使用我上面的代码,如果我想检查“thisWeek”和“allTime”的业力点,我猜它看起来像这样

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

我想知道如何编写 :thisWeek (本周获得的业力积分)和 :allTime (无限制的业力积分)范围方法。

知道“业力”的一个声誉表记录看起来像这样

 #<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">

你能建议我如何编写所需的范围方法吗?

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