Rails - Sep 2011 - How can I get the URL to an asset in the asset pipeline outside of my views?

Hello everyone,

I''m working on a Rails app that uses an external asset host for images 
and such. I''ve got my app configured to use the asset host in the 
environment file. The URL to the asset host is properly rendered when 
using an image_tag in the view per example (it will correctly set the 
src to http://asset.host.url/assets/myimage.png instead of 
/assets/myimage.png).

I''m using paperclip to attach images to my models, and I want to
specify
a default URL for models that don''t have an image. I traced the logic 
being used by image_tag to 
ActionView::Helpers::AssetTagHelper::AssetPath#compute_public_path, but 
I can''t seem to figure out how to call this logic from outside of my
views.

Can anyone enlighten me as to how to do this correctly?

Regards,
Mark

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In the meantime I''ve figured out a way to get what I want:

ActionController::Base.new.view_context.asset_path "myimage.png"

On 09/01/2011 12:10 PM, Mark Kremer wrote:
> Hello everyone,
>
> I''m working on a Rails app that uses an external asset host for
images
> and such. I''ve got my app configured to use the asset host in the 
> environment file. The URL to the asset host is properly rendered when 
> using an image_tag in the view per example (it will correctly set the 
> src to http://asset.host.url/assets/myimage.png instead of 
> /assets/myimage.png).
>
> I''m using paperclip to attach images to my models, and I want to 
> specify a default URL for models that don''t have an image. I
traced
> the logic being used by image_tag to 
> ActionView::Helpers::AssetTagHelper::AssetPath#compute_public_path, 
> but I can''t seem to figure out how to call this logic from outside
of
> my views.
>
> Can anyone enlighten me as to how to do this correctly?
>
> Regards,
> Mark
>
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