Question

我的用户模型中有以下named_scope：

  named_scope :all_stars, :joins => [:all_stars] do
    def overall
      self.find(:all, :conditions => ['recordable_type = ?', 'User'])
    end
  end

我想这样做：

  named_scope :all_stars, :joins => [:all_stars] do
    def overall
      overall_all_stars_condition
    end
  end

  def overall_all_stars_condition
    self.find(:all, :conditions => ['recordable_type = ?', 'User']) 
  end

可以吗？

Answer 1

如果你可以将另一个东西放到另一个命名范围内，那么你可以将两个范围链接在一起，这样可以得到你想要的东西。

named_scope :all_stars, :joins => [:all_stars]
named_scope :overall, :conditions => ['recordable_type = ?', 'User']

然后你应该可以这样称呼它：

object.all_stars.overall.all
object.overall.all_stars.find(:all)
# etc

并创建一个执行相同操作的方法：

def overall_all_stars_condition
  self.all_stars.overall.all
end

命名范围扩展 - 在Do Block之外的调用方法

1 个答案: