Question

I’ve got a list of all my articles, ordered by client name.

articles_controller.rb – index

@articles = Article.order('client')

In my show page, how do I get the next and previous article in that order?

Answer 1

If you already have the article for the show action, you could use ‘index’ to get the position of this article in the Array returned by ‘Article.order(‘client’).all’

Somehow like this:

@article = Article.find(params[:id])
@article_list = Article.order(:client).all
index = @article_list.index(@article)

Based on this you can calculate the previous and next article simple enough. Not sure if this is the smartest solution, but it should work.