Re: [Rails] making something available application wide

Fri, 02 Jul 2010 08:23:45 -0700

bingo bob wrote: 
I'd like to display a banner on every page. Ultimately I'll be tweaking
which banner is displayed via different controllers but initially I'd
just like to set a single banner application wide and display it in my
"_header", a partial I include in all layouts.

I've got a BannerAdvert model, simple. If I'm in my welcome controller
index action I can simply do,

@banner_url = BannerAdvert.first.url

in my _header partial (view) I display the url, works fine.

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BUT - my header is called from other controllers, I don't want to be
non-dry and repeat @banner_url = BannerAdvert.first.url all over the
place.

I'd like to set @banner_url = BannerAdvert.first.url application wide
for now - how do I do this, should be easy but I'm having a Friday
afternoon mental block! I thought application_controller and
application_helper, but putting the code in either of those two didn't
work.

Please help cure my insanity, any inspiration really appreciated.
You could put the @banner_url = BannerAdvert.. in you application_controller.rb.  Make it a before_filter and then display it in your layout.

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