Thanks for the answer, but I needed a way to clear the "cache" after
the cached object was updated.
Finally made it like this:
class NewsletterMailer
def self.style
@@style ||= fetch_style
end
def self.reload_style
@@style = fetch_style
end
end
and I'm calling NewsletterMailer.reload_style in Style#after_update
callback.
On Oct 23, 2:05 am, Andrew Bloom <[EMAIL PROTECTED]> wrote:
> If you dont want to get into memcache or other complex solutions you
> can do something simple like this:
>
> class StylesCache
> include Singleton
>
> def self.by_name(name)
> self.instance.by_name(name)
> end
>
> def by_name(name)
> return @active_style if @active_style && @active_style.name ==
> name
>
> @active_style = Style.find_by_name(name)
> return @active_style
> end
> end
>
> style = StylesCache.by_name("newsletter")
>
> On Oct 22, 4:36 pm, szimek <[EMAIL PROTECTED]> wrote:
>
>
>
> > Hi,
>
> > I got a mailer that uses dynamic stylesheets, so when creating an
> > email I'm doing Style.find_by_name("newsletter").
>
> > The problem is that it's fetching the same Style record for each email
> > it creates and when sending newsletters there can be a lot of them. I
> > could simply fetch this record in controller and just pass it as a
> > parameter for deliver_email method, but it doesn't seem right for me -
> > I'd like to keep as much as possible inside mailer class.
>
> > I can't also simply put STYLE = Style.find_by_name("newsletter") into
> > Mailer class, because if admin changes the style, the mailer would
> > still use cached object.
>
> > Is there a *simple* way to do it? This Style object can only be
> > updated - it can't be destroyed. I'm using Rails 2.1.1.
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