Question

I have an ad list that needs to be displayed in all the pages of my site, so I added the list to the application layout. Something like this:

<div>
    <%= render @ads %>
<div>

I want the ad list to be retrieved from the db before the application layout is rendered, but not when another layout is used, so I guess that before_filter is not the solution, right?

Where should I put this code?

@ads = Ad.all

Thanks in advance!

Answer 1

Given that the ads list should be displayed on every page of the site, then something like this should work:

class ApplicationController < ActionController::Base
  before_filter :preload_ads


  private

  def :preload_ads
    @ads = Ad.all
  end
end