On Feb 11, 11:14 am, "Levy Carneiro Jr." <[email protected]>
wrote:
> I tried this also:
>
> class ArchivesObserver < ActionController::Caching::Sweeper
> (...)
>
> In this case, there's no error, and it does nothing at all. The
> public/archives.html just stays there.
>
> I'm trying my best to avoid hacking it, using a simple File.delete :)
> Like the code below:
>
> # File rails/actionpack/lib/action_controller/caching/pages.rb, line 65
> 65: def expire_page(path)
> 66: return unless perform_caching
> 67:
> 68: benchmark "Expired page: #{page_cache_file(path)}" do
> 69: File.delete(page_cache_path(path)) if
> File.exist?(page_cache_path(path))
> 70: end
> 71: end
>
> Is there a way to expire pages without having to hack it?
I ran into a similar issue a few days ago. If I remember correctly, if
you look at what Rails is doing under the covers, you'll see that
ActionController::Caching::Sweeper subclasses will only work when
called from inside a controller. Basically the "expire_page" message
ends up getting intercepted by "method_missing", which tries to
forward it on to a controller stored in the @controller instance
variable. So if you invoke your Sweeper subclass from somewhere else
(like a Rake task), that @controller variable will be nil and nothing
will happen.
My workaround was just to fall back to File.delete and friends. Ugly,
but it works.
Cheers,
Wincent
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