Delete reviews from the last 24h

cleanup.rake

task :cleanup => :environment do
  Review.over_24_hours.destroy_all
end

# You can call it as rake cleanup on terminal

review.rb

class Review < ActiveRecord::Base
  scope :last_24_hours, -> { where('created_at >= ?', Time.now - 1.day) }
  scope :over_24_hours, -> { where('created_at < ?', Time.now - 1.day) }

#   The methods below do the same as scope above
#   def self.last_24_hours
#     where('created_at >= ?', Time.now - 1.day)
#   end
  
#   def self.over_24_hours
#     where('created_at < ?', Time.now - 1.day)
#   end
end

reviews_controller.rb

class ReviewsController < ApplicationController
  def index
    @reviews = Review.last_24_hours
  end
end