I've been thinking more about this, and instead of doing a whole new model, couldn't I do something like this in my Project model?
before_save :set_if_featured def set_if_featured articles = Article.find(:first, :conditions => ["featured = ?", true]) article.featured = false featured = true end On Feb 18, 4:49 pm, Rob Biedenharn <[email protected]> wrote: > Well, I don't know if a Project makes itself featured, but that's your > dilemma. > > In any case, it would be something that a controller action calls on > either a Project instance (@project.feature_me) or the FeaturedProduct > model (FeaturedProject.is_now(@project)). > > Where you might have: > > class FeaturedProject > def self.is_now(a_project) > fp = find(:first) || new > fp.project = a_project > fp.save > end > end > > -Rob > > On Feb 18, 2009, at 4:16 PM, yaphi wrote: > > > > > > > Interesting...So I'd have a method in my Project model that sets the > > FeaturedProject. > > > I'll play with this and see how it goes. Thanks! > > > On Feb 18, 2:08 pm, Rob Biedenharn <[email protected]> > > wrote: > >> Why not have a: > > >> class FeaturedProject < ActiveRecord::Base > >> belongs_to :project > > >> before_create :only_have_one > >> validates_associated :project > > >> def only_have_one > >> self.class.count < 1 > >> end > >> end > > >> Then you can FeaturedProduct.find(:first) and be sure that there is > >> only one. No need to mess with the projects when the featured one > >> changes. However, you might want to do: > > >> class Project > >> after_destroy :clean_up_if_featured > > >> def clean_up_if_featured > >> fp = FeaturedProject.find(:first) > >> if fp && fp.project_id == self.id > >> fp.destroy > >> else > >> true > >> end > >> end > >> end > > >> Although that might be equivalent to: > > >> class Project > >> has_one :featured_project, :dependent => :destroy > >> end > > >> -Rob > > >> On Feb 18, 2009, at 12:43 PM, yaphi wrote: > > >>> Hey Maurício, > > >>> I have a project model. What I'd like to do is set a project to > >>> "featured" so I can display that on the homepage. By marking a > >>> project > >>> as featured, I'd want all the other projects to automatically have > >>> their "featured" column set to false. > > >>> On Feb 17, 8:55 pm, Maurício Linhares <[email protected]> > >>> wrote: > >>>> No, there isn't. Maybe you're approaching the problem from the > >>>> wrong > >>>> point of view. > > >>>> Try to explain what is your problem that someone else might give > >>>> you a > >>>> better idea. > > >>>> - > >>>> Maurício Linhareshttp://alinhavado.wordpress.com/(pt-br) > >>>> |http://blog.codevader.com/(en) > > >>>> On Tue, Feb 17, 2009 at 10:13 PM, yaphi <[email protected]> > >>>> wrote: > > >>>>> I'm not sure if there is a term for this (which is why I can't > >>>>> find > >>>>> anything on google) but I want to be able to set one of my models > >>>>> active, where the rest will be set to inactive. > > >>>>> I would guess to write a method that sets all the records to > >>>>> inactive, > >>>>> then set the selected object to active. That seems like it's > >>>>> pretty > >>>>> messy though. Is there some sort of built-in functionality with > >>>>> rails > >>>>> that will only allow one column to be true at a time? > > >> Rob Biedenharn http://agileconsultingllc.com > >> [email protected] > > Rob Biedenharn http://agileconsultingllc.com > [email protected] --~--~---------~--~----~------------~-------~--~----~ 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 [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
