I am guessing you are in development mode with class caching off :) and that this behavior does not occur in test nor production mode ...
Try the code with either test or production if you haven't already ... I had gone to the place you are in as well, initially my workaround was for my class to read directories and parse .rb files to find sub-classes - LOL and bleyech! If you are seeing that things work just fin in test and production modes, you and I have the same issue - I just posted my solution to this (my fix is not pretty) to the ruby talk mailing list - it works consistently, maybe it will help you. Let me know if you have trouble finding it. Max On 5/4/11, Fearless Fool <[email protected]> wrote: > [I posted this initially to the StackOverflow list. There have been no > nibbles, so I'm coming here to consult the real experts! :)] > > I want to display a selection list of MyModel subclasses in a view. It's > not working yet, so for sanity checking, I included this in my view: > > <%= MyModel.descendants %> > > The first time I render this page after re-starting the server, it shows > the list of descendants (there are six). All subsequent times, it shows > up as an empty list []. When invoked from the console, > MyModel.descendants reliably returns all six subclasses. > > FWIW, I have a require statement in my initializers: > > Dir[Rails.root.join("app/models/my_models/**/*.rb").to_s].each {|f| > require f} > ... and I've verified that they're getting required. > > What the @($%& is going on? > > -- > Posted via http://www.ruby-forum.com/. > > -- > 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. > > -- 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.
