如何在Rails 3.1中查找本月创建的记录？

Question

任何人都知道在Rails 3.1中查找本月创建的记录的最佳查询？

Answer 1

class Model
  scope :this_month, -> { where(created_at: Time.now.beginning_of_month..Time.now.end_of_month) }
end

你可以这样称呼它:

Model.this_month

Answer 2

我更喜欢无SQL:

Model.where(:created_at => Time.now.beginning_of_month..Time.now.end_of_month)

或作为范围:

class Model < ActiveRecord::Base
  scope :this_month, -> { where(:created_at => Time.now.beginning_of_month..Time.now.end_of_month) }
end