RoR 3 Limiting users to 2 posts per day

问题:

I am looking for away to limit my users from posting more than twice per day and have no more than 5 posts per week. I have a users and posts model/controller.

I have been looking at these questions but they are not quite what I am looking for.

Rails 3.1 limit user created objects

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

Error @ 20:44 13/03/2012 with the code from KandadaBoggu

NoMethodError in PostsController#create

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

回答1:

Try this:

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