RoR 3将用户限制为每天2个帖子

Question

我正在寻找限制我的用户每天发布超过两次并且每周不超过5个帖子。我有一个用户和帖子模型/控制器。

我一直在看这些问题，但它们并不是我想要的。

Rails 3.1 limit user created objects

How do I validate a time in Rails? Limiting a user to post once a day

错误@ 20:44 13/03/2012，来自KandadaBoggu的代码

NoMethodError in PostsController#create

undefined method `beginnning_of_day' for 2012-03-13 20:36:11 +0000:Time

Answer 1

试试这个：

class User
  has_many :posts do

    def today
      where(:created_at => (Time.zone.now.beginning_of_day..Time.zone.now))
    end

    def this_week
      where(:created_at => (Time.zone.now.beginning_of_week..Time.zone.now))
    end
  end    
end


class Post
  belongs_to :user

  validate :user_quota, :on => :create  

private 
  def user_quota
   if user.posts.today.count >= 2
     errors.add(:base, "Exceeds daily limit")
   elsif user.posts.this_week.count >= 5
     errors.add(:base, "Exceeds weekly limit")
   end
  end

end