Justin Britten wrote: > I'm having some difficulty finding a way to expire the cache after > executing an asynchronous BackgroundRB task. From a Rails controller I > fire off an async worker which will handle importing of data from a file > and, when completed, the fragment cache of a page needs to be expired. > I've tried ... > > 1. Simply calling expire_action from within the BackgroundRB worker. > However, it appears that BackgroundRB doesn't have access to > ActionController. > > 2. Using sweepers/observers on the model object being changed by the > BackgroundRB worker. The BackgroundRB worker will do some stuff with > the model object, the observer will catch this, and the sweeper will > handle expiring the cache. However, the sweeper complains that the > record passed to the after_whatever callback methods is nil. Without > this model object I can't expire the correct cache. > > Using Rails 2.1 and the absolute latest BackgroundRB from github. > > Any suggestions? > > Cheers, > Justin
Have you tried using Rails.cache.delete(cache_path) from the model? The sweepers weren't fine-grained enough for my fragment caching, and I ended up just taking control of the cache expiration (for my app, a single model may have, oh, 8 different fragments cached, and it may appear in cache fragments of any number of other models -- polymorphic relationships are cool, but have their downside -- so depending on what changed, a model knows what caches it should expire of its own, and if fragments of models it has a relationship with should expire also - i.e., my name field changed and that other model's cache shows my name). -- 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 -~----------~----~----~----~------~----~------~--~---
