Question

I have a method that gets a random banner, but I do not want it to show the same banner twice in a row.

def random_banner
  @koder = @side.reklamers.all(:select => :id).collect(&:id)
  @koder.sample gets a random ID
  @reklame = Reklamer.find(@koder.sample)
  render :text => @reklame.kode 
end

What is the best solution?

TDGS solution:
When I visit the action, it works well, but I have a blog that makes an ajax call to get the banner code, and there, the same banner appear twice in a row.

Answer 1

Store the last used banner id in the session somewhere, say session[:banner_id]

Then, do the following:

@koder = @side.reklamers.pluck(:id).reject{|id| id == session[:banner_id}
@reklame = Reklamer.find(@koder.sample)
session[:banner_id] = @reklame.id