How to refresh an object at a certain time each day in a rails app? -

this might bit of basic question, searched , wasn't able find answer.

in rails app, show random joke on page whenever page loads. i'd implement 'joke of day', same joke displays day , refreshes each day @ midnight. can point me in right direction?

here's code i'm using display random joke:

 class jokescontroller < applicationcontroller     def index         @joke = joke.limit(5).order("random()").last     end  end 

and view:

<div class="col-sm-10 saying">       <%= @joke.saying.html_safe %>  </div> 

thanks in advance!

a better solution came later

controller

 class jokescontroller < applicationcontroller     def index         @joke = joke.joke_of_the_day     end  end 

model

class joke < activerecord::base   def self.joke_of_the_day     joke = joke.where(joke_of_the_day: date.today).first      # joke picked     if joke.present?       joke      # pick joke today     else       joke = joke.order("random()").first       joke.update(joke_of_the_day: date.today)       joke     end   end end 

don't forget add joke_of_the_day field jokes table type date

---

my original answer

this not perfect solution, algorithm can improved:

def joke_of_the_day   count = joke.count    # make sure joke unique of particular   # date. can more complexe calculation make sure it's   # unique basic idea   sum_of_date = date.today.year + date.today.month + date.today.day    # loop make sure sum_of_date not greater count of jokes   new_count = loop     if sum_of_date >= count       sum_of_date = sum_of_date / 2     else       break (count - sum_of_date)     end   end    joke.first(new_count).last end