On May 2, 1:29 pm, Joe <j...@dev-hq.co.uk> wrote: > > The tutorials are then displayed in order of there id (auto- > incrementing) in their categories show method. > The thing is, I want to create a link that goes from one tutorial > (with an id of 10 for example) to the next tutorial in that category > (which might not have an id of 11, as I create different tutorials at > different times, therefore creating different ids for two tutorials > seemingly next to eachother in order). > > Obviously I know I will need something like this: > <%= link_to 'Next lesson....', %> > > but I just don't know how I can manage it.. > > By the way, every tutorial has a: category_id to determain which > category they are in (this is an integer). >
If I were you, i'd create a position column on tutorials, which determines the ordering of tutorials for a category (ordering by id might seem the simplest but stops you from ever reordering tutorials. Given a tutorial, the next one is the first one in the same category whose position is greater than the current ones (you could write a next_tutorial method on tutorial). There's a plugin called acts_as_list that you might find helpful maintaining the position column. If you're hell bent on ordering by id then it's as if id is your position column Fred -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
