计数的范围条件？

Question

如何让scope使用多个.count？

scope :level_5, -> { (self.accomplished.key.count > 4) && (self.accomplished.adventure.count > 2)
&& (self.accomplished.health.count > 2) && (self.accomplished.work.count > 2) }

我也试过了：

scope :level_5, -> { self.accomplished.key.count > 4, self.accomplished.adventure.count > 2,
self.accomplished.health.count > 2), (self.accomplished.work.count > 2) }

或

scope :level_5, -> { accomplished.where(key.count > 4, adventure.count > 2,
health.count > 2, work.count > 2) }

或

scope :level_5, -> { "user.accomplished.key.count > 4" && "user.accomplished.adventure.count > 2" &&
"user.accomplished.health.count > 2" && "user.accomplished.work.count > 2" }

它将用于条件，所以如果:level_5然后触发X。