我有几个Mongoid模型类,它们都有一个:datetime字段。我想查询这些模型,找出今天日期以下的记录。查询如下所示:
scope today, where(:datetime.gt => DateTime.now.beginning_of_day, :datetime.lt => DateTime.now.end_of_day)
目前,上述范围代码在所有模型类中都是重复的。我该怎么把它擦干?
简单的事情是:
module TimeDepedentent
field :datetime
scope today, where(:datetime.gt => DateTime.now.beginning_of_day, :datetime.lt => DateTime.now.end_of_day)
scope yesterday ...
scope one_month_ago ...
end
class MyModel
include TimeDepedentent
end